├── .turbo ├── cookies │ └── 1.cookie └── daemon │ ├── 393a45f584515f12-turbo.log.2025-09-14 │ ├── 393a45f584515f12-turbo.log.2025-09-15 │ └── 393a45f584515f12-turbo.log.2025-09-21 ├── .husky └── pre-commit ├── apps └── www │ ├── entities │ ├── resource │ │ ├── index.ts │ │ ├── model │ │ │ └── types.ts │ │ └── lib │ │ │ └── faviconUtils.ts │ ├── completions │ │ ├── model │ │ │ └── types.ts │ │ ├── api │ │ │ ├── getCompletions.ts │ │ │ ├── deleteCompletions.ts │ │ │ └── createCompletions.ts │ │ └── hooks │ │ │ └── useCompletions.ts │ ├── roadmap │ │ ├── model │ │ │ ├── index.ts │ │ │ ├── constants.ts │ │ │ └── types.ts │ │ ├── api │ │ │ ├── index.ts │ │ │ └── getRoadmaps.ts │ │ ├── ui │ │ │ └── index.ts │ │ └── lib │ │ │ └── parseRoadmap.ts │ ├── category │ │ ├── ui │ │ │ └── index.ts │ │ ├── model │ │ │ ├── constants.ts │ │ │ ├── index.ts │ │ │ └── types.ts │ │ ├── api │ │ │ └── index.ts │ │ ├── index.ts │ │ ├── lib │ │ │ └── mapCategoriesWithCount.ts │ │ └── config │ │ │ └── metadata.ts │ ├── blog │ │ ├── model │ │ │ ├── index.ts │ │ │ └── types.ts │ │ ├── ui │ │ │ ├── index.ts │ │ │ └── BlogDetail.tsx │ │ ├── api │ │ │ ├── index.ts │ │ │ └── getBlogBySlug.ts │ │ └── index.ts │ ├── challenge │ │ ├── model │ │ │ ├── templates │ │ │ │ ├── common.ts │ │ │ │ ├── tests.ts │ │ │ │ ├── static.ts │ │ │ │ ├── index.ts │ │ │ │ └── vanilla.ts │ │ │ └── constants.ts │ │ ├── lib │ │ │ ├── cleanUpReadme.ts │ │ │ ├── sortChallengesByDifficulty.ts │ │ │ ├── sortChallengesByDate.ts │ │ │ ├── parseMetaInfo.ts │ │ │ └── useSyncScopeToSessionStorage.ts │ │ ├── api │ │ │ ├── index.ts │ │ │ ├── getChallengesByTag.ts │ │ │ ├── getAllChallengesTags.ts │ │ │ ├── templates │ │ │ │ └── getTemplatesAvailable.ts │ │ │ ├── getChallenges.ts │ │ │ └── getChallengeInfoByLocale.ts │ │ └── context │ │ │ └── ChallengeProvider.tsx │ ├── comment │ │ ├── model │ │ │ └── types.ts │ │ └── hooks │ │ │ └── useComment.ts │ └── answer │ │ └── hooks │ │ └── useAnswers.ts │ ├── public │ ├── robots.txt │ ├── og.png │ ├── favicon.ico │ ├── images │ │ ├── logo-2.png │ │ ├── auth-github-bg.png │ │ ├── logo-readme-dark.png │ │ ├── logo-readme-light.png │ │ └── logo.svg │ └── questions │ │ └── rtl-icon-1.png │ ├── screens │ ├── home │ │ └── index.ts │ ├── categories │ │ ├── index.ts │ │ └── ui │ │ │ └── index.ts │ ├── challenges │ │ └── ui │ │ │ └── index.ts │ ├── roadmaps │ │ └── ui │ │ │ ├── index.ts │ │ │ ├── RoadmapDetailPage.tsx │ │ │ └── RoadmapsListPage.tsx │ ├── blog │ │ └── ui │ │ │ ├── BlogDetailPage.tsx │ │ │ └── BlogListPage.tsx │ └── playground │ │ └── lib │ │ ├── getFilesFromLocalStorage.ts │ │ └── getTemplateFromURL.ts │ ├── shared │ ├── api │ │ └── supabase │ │ │ ├── index.ts │ │ │ └── client.ts │ ├── styles │ │ └── utilities.css │ ├── config │ │ ├── storage.ts │ │ ├── locale.ts │ │ └── paths.ts │ ├── lib │ │ ├── pipe.ts │ │ ├── string │ │ │ └── escapeHtml.ts │ │ ├── i18n │ │ │ ├── getFileNameByLocale.ts │ │ │ ├── translate.ts │ │ │ └── getLocaleVariations.ts │ │ ├── sessionStorage.ts │ │ ├── localStorage.ts │ │ └── bundleMarkdown.ts │ ├── model │ │ └── store.ts │ ├── context │ │ ├── ThemeProvider.tsx │ │ └── QueryProvider.tsx │ └── ui │ │ ├── mdx │ │ └── MDXComponent.tsx │ │ └── FullPageLoader.tsx │ ├── .vscode │ └── settings.json │ ├── postcss.config.js │ ├── app │ ├── (default) │ │ ├── blog │ │ │ ├── page.tsx │ │ │ └── [slug] │ │ │ │ └── page.tsx │ │ ├── roadmaps │ │ │ └── page.tsx │ │ ├── page.tsx │ │ ├── challenges │ │ │ └── page.tsx │ │ ├── categories │ │ │ └── [category] │ │ │ │ └── page.tsx │ │ └── layout.tsx │ ├── (editor) │ │ ├── submit │ │ │ ├── quiz │ │ │ │ └── page.tsx │ │ │ ├── theory │ │ │ │ └── page.tsx │ │ │ └── question │ │ │ │ └── page.tsx │ │ ├── layout.tsx │ │ ├── challenges │ │ │ └── [slug] │ │ │ │ └── page.tsx │ │ └── play │ │ │ ├── page.tsx │ │ │ └── loading.tsx │ └── sitemap.ts │ ├── features │ ├── code-editor │ │ ├── lib │ │ │ ├── formatFileName.ts │ │ │ ├── enableEmmet.ts │ │ │ └── setLanguage.ts │ │ ├── hooks │ │ │ ├── useLayout.tsx │ │ │ └── useSandpackLocal.ts │ │ └── ui │ │ │ └── Console.tsx │ ├── leaderboard │ │ ├── hooks │ │ │ └── useLeaderboard.ts │ │ └── ui │ │ │ └── Leaderboard.tsx │ ├── auth │ │ ├── hooks │ │ │ └── useAuth.ts │ │ ├── ui │ │ │ └── UserNav.tsx │ │ └── api │ │ │ └── getAuthUser.ts │ ├── submission-theory │ │ ├── model │ │ │ └── formSchema.ts │ │ └── ui │ │ │ └── FormHeader.tsx │ ├── submission-quiz │ │ └── model │ │ │ └── formSchema.ts │ └── submission-question │ │ └── model │ │ └── formSchema.ts │ ├── next.config.js │ ├── components │ ├── ui │ │ ├── aspect-ratio.tsx │ │ ├── skeleton.tsx │ │ ├── collapsible.tsx │ │ ├── link.tsx │ │ ├── icon-button.tsx │ │ ├── label.tsx │ │ ├── separator.tsx │ │ ├── toaster.tsx │ │ ├── index.ts │ │ └── progress.tsx │ └── icons │ │ ├── XIcon.tsx │ │ ├── ChevronRightIcon.tsx │ │ ├── ChevronDownIcon.tsx │ │ ├── ChevronLeftIcon.tsx │ │ ├── ChevronUpIcon.tsx │ │ ├── LogClearIcon.tsx │ │ ├── SpinnerIcon.tsx │ │ ├── LogErrorIcon.tsx │ │ ├── LogAllIcon.tsx │ │ ├── VueColorIcon.tsx │ │ ├── ExpandHorizontalIcon.tsx │ │ ├── ExpandVerticalIcon.tsx │ │ ├── ArrowDownIcon.tsx │ │ ├── ArrowUpIcon.tsx │ │ ├── CollapseHorizontalIcon.tsx │ │ ├── CollapseVerticalIcon.tsx │ │ ├── CssColorIcon.tsx │ │ ├── VerticalDotsIcon.tsx │ │ ├── UserIcon.tsx │ │ ├── VanillaColorIcon.tsx │ │ ├── ListIcon.tsx │ │ ├── CheckIcon.tsx │ │ └── BugIcon.tsx │ ├── scripts │ └── actions │ │ ├── types.ts │ │ └── loader.ts │ ├── components.json │ ├── utils │ └── helpers.ts │ ├── eslint.config.js │ ├── .gitignore │ └── tsconfig.json ├── pnpm-workspace.yaml ├── .vscode └── settings.json ├── challenges ├── 526-useprevious │ ├── README.md │ ├── info.yml │ └── template.react.md ├── 380-news-board │ ├── template.react.md │ └── info.yml ├── 40-layout-1 │ ├── info.yml │ └── template.vanilla.md ├── 6-debounce │ └── info.yml ├── 10-classnames │ └── info.yml ├── 13-isempty │ └── info.yml ├── 35-promise-all │ └── info.yml ├── 141-range │ └── info.yml ├── 145-minby │ └── info.yml ├── 174-re-render-3 │ └── info.yml ├── 18-flatten │ └── info.yml ├── 20-throttle │ └── info.yml ├── 32-instanceofclass │ └── info.yml ├── 364-remounting │ └── info.yml ├── 372-re-render-5 │ └── info.yml ├── 378-usedebounce │ └── info.yml ├── 385-usereducer │ └── info.yml ├── 47-checkbox │ ├── info.yml │ └── template.vanilla.md ├── 5-fluid-typography │ ├── info.yml │ └── template.vanilla.md ├── 368-re-render-4 │ └── info.yml ├── 37-promise-race │ └── info.yml ├── 43-promise-any │ └── info.yml ├── 446-get │ └── info.yml ├── 449-curry │ └── info.yml ├── 471-pipe │ └── info.yml ├── 515-race │ └── info.yml ├── 16-re-render │ └── info.yml ├── 366-reconcilation-2 │ └── info.yml ├── 374-stale-callback │ ├── info.yml │ └── template.react.md ├── 376-stale-refs │ ├── info.yml │ └── template.react.md ├── 49-holy-grail │ └── info.yml ├── 528-react-memo-and-children │ ├── info.yml │ └── README.md ├── 55-memo │ └── info.yml ├── 360-reconcilation-bug │ ├── info.yml │ └── template.react.md ├── 405-sampling │ ├── info.yml │ └── README.md ├── 409-maplimit │ ├── info.yml │ └── README.md ├── 480-jquery-css │ ├── info.yml │ └── README.md ├── 496-json-parse │ └── info.yml ├── 511-sequence │ └── info.yml ├── 513-parallel │ └── info.yml ├── 520-todo-list │ ├── info.yml │ ├── template.react.md │ └── README.md ├── 531-stopwatch │ ├── info.yml │ ├── template.react.md │ └── README.md ├── 399-tic-tac-toe │ ├── info.yml │ └── README.md ├── 442-deep-clone │ └── info.yml ├── 86-chunk │ └── info.yml ├── 91-stack │ └── info.yml ├── 95-queue │ └── info.yml ├── 148-clamp │ └── info.yml ├── 152-wait │ └── info.yml ├── 161-reject │ └── info.yml ├── 188-two-sums │ └── info.yml ├── 271-clone-graph │ └── info.yml ├── 321-rotate-matrix │ └── info.yml ├── 323-spiral-matrix │ └── info.yml ├── 465-decode-message │ └── info.yml ├── 491-json-stringify │ └── info.yml ├── 501-priority-queue │ └── info.yml ├── 58-event-emitter │ └── info.yml ├── 158-shuffle │ └── info.yml ├── 277-valid-tree │ └── info.yml ├── 295-coin-change │ └── info.yml ├── 313-merge-intervals │ └── info.yml ├── 317-meeting-schedule │ └── info.yml ├── 331-reverse-bits │ └── info.yml ├── 439-snake-to-camelcase │ └── info.yml ├── 468-first-bad-version │ └── info.yml ├── 489-detect-data-type │ └── info.yml ├── 509-clearalltimeout │ └── info.yml ├── 109-jest-spyon │ └── info.yml ├── 169-re-render-2 │ └── info.yml ├── 183-anagrams │ └── info.yml ├── 197-string-encode-and-decode │ └── info.yml ├── 203-is-palindrome │ └── info.yml ├── 285-house-robber │ └── info.yml ├── 3-use-hover │ ├── info.yml │ └── template.react.md ├── 325-set-zeroes-in-matrix │ └── info.yml ├── 340-escape-the-overflow-hidden │ └── info.yml ├── 4-use-focus-trap │ ├── info.yml │ └── template.react.md ├── 420-promise-finally │ └── info.yml ├── 474-immutability-helper │ └── info.yml ├── 117-composibility │ ├── info.yml │ └── template.javascript.md ├── 191-anagram-groups │ └── info.yml ├── 217-validate-parentheses │ └── info.yml ├── 223-reverse-a-linked-list │ └── info.yml ├── 227-reorder-linked-list │ └── info.yml ├── 261-search-for-word │ └── info.yml ├── 283-climbing-stairs │ └── info.yml ├── 287-house-robber-ii │ └── info.yml ├── 293-decode-ways │ └── info.yml ├── 299-word-break │ └── info.yml ├── 303-count-paths │ └── info.yml ├── 311-insert-new-interval │ └── info.yml ├── 327-number-of-one-bits │ └── info.yml ├── 333-missing-number │ └── info.yml ├── 418-dom-to-object │ └── info.yml ├── 430-custom-promise │ └── info.yml ├── 455-curry-with-placeholder │ └── info.yml ├── 99-closure-2 │ └── info.yml ├── 104-queue-using-stack │ └── info.yml ├── 115-foreach-and-this │ └── info.yml ├── 179-contains-duplicate │ └── info.yml ├── 205-three-integer-sum │ └── info.yml ├── 239-same-binary-tree │ └── info.yml ├── 275-course-schedule │ └── info.yml ├── 309-jump-game │ └── info.yml ├── 319-meeting-schedule-ii │ └── info.yml ├── 335-sum-of-two-integers │ └── info.yml ├── 383-can-you-describe-the-reconciliation-process │ └── info.yml ├── 407-file-explorer │ └── info.yml ├── 415-test-and-expect │ └── info.yml ├── 207-max-water-container │ └── info.yml ├── 235-invert-a-binary-tree │ └── info.yml ├── 237-depth-of-binary-tree │ └── info.yml ├── 267-search-for-word-ii │ └── info.yml ├── 269-count-number-of-islands │ └── info.yml ├── 281-foreign-dictionary │ └── info.yml ├── 307-maximum-subarray │ └── info.yml ├── 329-counting-bits │ └── info.yml ├── 413-html-string-encoder │ └── info.yml ├── 78-array-prototype-map │ └── info.yml ├── 273-pacific-atlantic-water-flow │ └── info.yml ├── 424-promise-allsettled │ └── info.yml ├── 503-reorder-array-with-new-indexes │ ├── info.yml │ └── README.md ├── 533-trapping-rain-water │ ├── info.yml │ └── template.typescript.md ├── 74-array-prototype-filter │ └── info.yml ├── 82-array-prototype-reduce │ └── info.yml ├── 194-top-k-frequent-elements │ └── info.yml ├── 199-products-of-array-excluding-self │ └── info.yml ├── 201-longest-consecutive-sequence │ └── info.yml ├── 225-merge-two-sorted-linked-lists │ └── info.yml ├── 241-subtree-of-a-binary-tree │ └── info.yml ├── 257-find-median-in-a-data-stream │ └── info.yml ├── 259-combination-target-sum │ └── info.yml ├── 279-count-connected-components │ └── info.yml ├── 291-palindromic-substrings │ └── info.yml ├── 315-non-overlapping-intervals │ └── info.yml ├── 403-find-highest-commodity-price │ └── info.yml ├── 253-binary-tree-maximum-path-sum │ └── info.yml ├── 263-implement-prefix-tree-trie │ └── info.yml ├── 297-maximum-product-subarray │ └── info.yml ├── 411-parallel-async-execution │ └── info.yml ├── 422-execute-promises-in-series │ └── info.yml ├── 428-retry-promises-n-times │ └── info.yml ├── 459-debounce-with-leading-and-trailing │ └── info.yml ├── 231-linked-list-cycle-detection │ └── info.yml ├── 247-valid-binary-search-tree │ └── info.yml ├── 305-longest-common-subsequence │ └── info.yml ├── 69-two-functions-one-object │ ├── info.yml │ └── template.javascript.md ├── 209-best-time-to-buy-and-sell-stock │ └── info.yml ├── 249-kth-smallest-integer-in-bst │ └── info.yml ├── 265-design-word-search-data-structure │ └── info.yml ├── 289-longest-palindromic-substring │ └── info.yml ├── 301-longest-increasing-subsequence │ └── info.yml ├── 426-priority-based-promise-executor │ └── info.yml ├── 215-minimum-window-with-characters │ └── info.yml ├── 221-find-target-in-rotated-sorted-array │ └── info.yml ├── 233-merge-k-sorted-linked-lists │ └── info.yml ├── 245-level-order-traversal-of-binary-tree │ └── info.yml ├── 219-find-minimum-in-rotated-sorted-array │ └── info.yml ├── 229-remove-node-from-end-of-linked-list │ └── info.yml ├── 255-serialize-and-deserialize-binary-tree │ └── info.yml ├── 358-closure-3 │ ├── info.yml │ └── solution.md ├── 432-throttle-with-leading-and-trailing │ └── info.yml ├── 498-sum-function │ └── info.yml ├── 213-longest-repeating-substring-with-replacement │ └── info.yml ├── 350-promise-chain-output │ ├── info.yml │ └── solution.md ├── 389-useeffect │ └── info.yml ├── 45-specificity │ └── info.yml ├── 2-click-outisde │ ├── info.yml │ └── template.react.md ├── 251-binary-tree-from-preorder-and-inorder-traversal │ └── info.yml ├── 243-lowest-common-ancestor-in-binary-search-tree │ └── info.yml ├── 211-longest-substring-without-repeating-characters │ └── info.yml ├── 348-promise-resolution-order │ ├── info.yml │ └── solution.md ├── 391-useeffect-2 │ └── info.yml ├── 483-node-store │ └── info.yml ├── 113-losing-this │ └── info.yml ├── 434-multi-stepper-component │ └── info.yml ├── 395-react-useeffect-micro-macro-tasks │ └── info.yml ├── 8-closure │ ├── info.yml │ └── solution.md ├── 121-f-prototype │ ├── info.yml │ └── solution.md ├── 401-usestate │ ├── info.yml │ └── README.md ├── 66-this │ └── info.yml ├── 346-promise-order │ └── info.yml ├── 61-logical-operators │ └── info.yml ├── 393-useeffect-3 │ └── info.yml ├── 1-rtl-icon │ └── info.yml ├── 123-f-prototype-and-constructor │ └── info.yml ├── 486-find-corresponding-node │ └── info.yml ├── 7-promise-order │ └── info.yml ├── 356-hoisting │ └── info.yml ├── 352-promise-chain-output-2 │ └── info.yml ├── 137-overriding-constructor │ └── info.yml ├── 506-object-assign │ └── info.yml └── 133-class-and-prototype │ ├── info.yml │ └── solution.md ├── .lintstagedrc.json ├── .prettierrc ├── tsconfig.json ├── turbo.json ├── .github ├── ISSUE_TEMPLATE │ ├── feedback.md │ ├── bug.md │ ├── feature_request.md │ └── answer.md └── workflows │ └── issue-pr.yml ├── .gitignore └── roadmaps └── javascript └── info.yml /.turbo/cookies/1.cookie: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /.husky/pre-commit: -------------------------------------------------------------------------------- 1 | npx lint-staged 2 | -------------------------------------------------------------------------------- /apps/www/entities/resource/index.ts: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /apps/www/entities/completions/model/types.ts: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /.turbo/daemon/393a45f584515f12-turbo.log.2025-09-14: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /.turbo/daemon/393a45f584515f12-turbo.log.2025-09-15: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /.turbo/daemon/393a45f584515f12-turbo.log.2025-09-21: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /pnpm-workspace.yaml: -------------------------------------------------------------------------------- 1 | packages: 2 | - packages/** 3 | - apps/** -------------------------------------------------------------------------------- /apps/www/entities/roadmap/model/index.ts: -------------------------------------------------------------------------------- 1 | export * from "./types"; 2 | -------------------------------------------------------------------------------- /apps/www/entities/resource/model/types.ts: -------------------------------------------------------------------------------- 1 | export type Resource = string; 2 | -------------------------------------------------------------------------------- /apps/www/public/robots.txt: -------------------------------------------------------------------------------- 1 | # Allow all crawlers 2 | User-agent: * 3 | Allow: / -------------------------------------------------------------------------------- /apps/www/screens/home/index.ts: -------------------------------------------------------------------------------- 1 | export { HomePage } from "./ui/HomePage"; 2 | -------------------------------------------------------------------------------- /apps/www/screens/categories/index.ts: -------------------------------------------------------------------------------- 1 | export { CategoryDetailPage } from "./ui"; 2 | -------------------------------------------------------------------------------- /apps/www/shared/api/supabase/index.ts: -------------------------------------------------------------------------------- 1 | export { createClient } from "./client"; 2 | -------------------------------------------------------------------------------- /apps/www/entities/category/ui/index.ts: -------------------------------------------------------------------------------- 1 | export { CategoryList } from "./CategoryList"; 2 | -------------------------------------------------------------------------------- /apps/www/entities/roadmap/model/constants.ts: -------------------------------------------------------------------------------- 1 | export const ROADMAP_ROOT = "../../roadmaps"; 2 | -------------------------------------------------------------------------------- /apps/www/screens/challenges/ui/index.ts: -------------------------------------------------------------------------------- 1 | export { ChallengesPage } from "./ChallengesPage"; 2 | -------------------------------------------------------------------------------- /apps/www/screens/categories/ui/index.ts: -------------------------------------------------------------------------------- 1 | export { CategoryDetailPage } from "./CategoryDetailPage"; 2 | -------------------------------------------------------------------------------- /.vscode/settings.json: -------------------------------------------------------------------------------- 1 | { 2 | "tailwindCSS.experimental.configFile": "apps/www/app/globals.css" 3 | } 4 | -------------------------------------------------------------------------------- /apps/www/.vscode/settings.json: -------------------------------------------------------------------------------- 1 | { 2 | "tailwindCSS.experimental.configFile": "./app/globals.css" 3 | } 4 | -------------------------------------------------------------------------------- /apps/www/shared/styles/utilities.css: -------------------------------------------------------------------------------- 1 | @utility box-trim { 2 | text-box: trim-both cap alphabetic; 3 | } 4 | -------------------------------------------------------------------------------- /apps/www/entities/blog/model/index.ts: -------------------------------------------------------------------------------- 1 | export type { Blog, BlogListProps, BlogDetailProps } from "./types"; 2 | -------------------------------------------------------------------------------- /apps/www/entities/roadmap/api/index.ts: -------------------------------------------------------------------------------- 1 | export * from "./getRoadmaps"; 2 | export * from "./getRoadmapByPath"; 3 | -------------------------------------------------------------------------------- /apps/www/public/og.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jsartisan/frontend-challenges/HEAD/apps/www/public/og.png -------------------------------------------------------------------------------- /apps/www/entities/category/model/constants.ts: -------------------------------------------------------------------------------- 1 | export const CATEGORIES = ["javascript", "css", "react"] as const; 2 | -------------------------------------------------------------------------------- /apps/www/postcss.config.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | plugins: { 3 | "@tailwindcss/postcss": {}, 4 | }, 5 | }; 6 | -------------------------------------------------------------------------------- /apps/www/shared/config/storage.ts: -------------------------------------------------------------------------------- 1 | export const STORAGE_KEY = "fc"; 2 | export const AUTH_TOKEN_KEY = "auth_token"; 3 | -------------------------------------------------------------------------------- /apps/www/public/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jsartisan/frontend-challenges/HEAD/apps/www/public/favicon.ico -------------------------------------------------------------------------------- /apps/www/entities/blog/ui/index.ts: -------------------------------------------------------------------------------- 1 | export { BlogList } from "./BlogList"; 2 | export { BlogDetail } from "./BlogDetail"; 3 | -------------------------------------------------------------------------------- /apps/www/entities/category/model/index.ts: -------------------------------------------------------------------------------- 1 | export type { Category } from "./types"; 2 | export { CATEGORIES } from "./constants"; 3 | -------------------------------------------------------------------------------- /apps/www/public/images/logo-2.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jsartisan/frontend-challenges/HEAD/apps/www/public/images/logo-2.png -------------------------------------------------------------------------------- /apps/www/entities/blog/api/index.ts: -------------------------------------------------------------------------------- 1 | export { getAllBlogs } from "./getAllBlogs"; 2 | export { getBlogBySlug } from "./getBlogBySlug"; 3 | -------------------------------------------------------------------------------- /apps/www/shared/lib/pipe.ts: -------------------------------------------------------------------------------- 1 | export const pipe = (value: any, ...fns: ((any) => any)[]) => fns.reduce((acc, fn) => fn(acc), value); 2 | -------------------------------------------------------------------------------- /apps/www/app/(default)/blog/page.tsx: -------------------------------------------------------------------------------- 1 | import { BlogListPage } from "~/screens/blog/ui/BlogListPage"; 2 | 3 | export default BlogListPage; 4 | -------------------------------------------------------------------------------- /apps/www/entities/category/api/index.ts: -------------------------------------------------------------------------------- 1 | export { getChallengesByCategory, filterChallengesByCategory } from "./getChallengesByCategory"; 2 | -------------------------------------------------------------------------------- /apps/www/entities/roadmap/ui/index.ts: -------------------------------------------------------------------------------- 1 | export * from "./RoadmapListItem"; 2 | export * from "./RoadmapList"; 3 | export * from "./RoadmapDetail"; 4 | -------------------------------------------------------------------------------- /apps/www/public/images/auth-github-bg.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jsartisan/frontend-challenges/HEAD/apps/www/public/images/auth-github-bg.png -------------------------------------------------------------------------------- /apps/www/public/questions/rtl-icon-1.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jsartisan/frontend-challenges/HEAD/apps/www/public/questions/rtl-icon-1.png -------------------------------------------------------------------------------- /challenges/526-useprevious/README.md: -------------------------------------------------------------------------------- 1 | Implement a custom React hook called usePrevious that stores the previous value of a given state or prop. 2 | -------------------------------------------------------------------------------- /apps/www/public/images/logo-readme-dark.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jsartisan/frontend-challenges/HEAD/apps/www/public/images/logo-readme-dark.png -------------------------------------------------------------------------------- /apps/www/public/images/logo-readme-light.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jsartisan/frontend-challenges/HEAD/apps/www/public/images/logo-readme-light.png -------------------------------------------------------------------------------- /challenges/380-news-board/template.react.md: -------------------------------------------------------------------------------- 1 | ```jsx App.jsx active 2 | export default function App() { 3 | return

News Board

; 4 | } 5 | ``` 6 | -------------------------------------------------------------------------------- /apps/www/features/code-editor/lib/formatFileName.ts: -------------------------------------------------------------------------------- 1 | export const formatFileName = (fileName: string) => { 2 | return fileName.replace(/^\//, ""); 3 | }; 4 | -------------------------------------------------------------------------------- /apps/www/next.config.js: -------------------------------------------------------------------------------- 1 | // https://nextjs.org/docs/api-reference/next.config.js/introduction 2 | module.exports = { 3 | reactStrictMode: false, 4 | }; 5 | -------------------------------------------------------------------------------- /apps/www/screens/roadmaps/ui/index.ts: -------------------------------------------------------------------------------- 1 | export { RoadmapsListPage } from "./RoadmapsListPage"; 2 | export { RoadmapDetailPage } from "./RoadmapDetailPage"; 3 | -------------------------------------------------------------------------------- /apps/www/app/(default)/roadmaps/page.tsx: -------------------------------------------------------------------------------- 1 | import { RoadmapsListPage } from "~/screens/roadmaps/ui/RoadmapsListPage"; 2 | 3 | export default RoadmapsListPage; 4 | -------------------------------------------------------------------------------- /apps/www/app/(editor)/submit/quiz/page.tsx: -------------------------------------------------------------------------------- 1 | import { SubmitQuizPage } from "~/screens/submit-quiz/ui/SubmitQuizPage"; 2 | 3 | export default SubmitQuizPage; 4 | -------------------------------------------------------------------------------- /apps/www/app/(default)/page.tsx: -------------------------------------------------------------------------------- 1 | import { HomePage } from "~/screens/home/index"; 2 | 3 | export const dynamic = "force-static"; 4 | 5 | export default HomePage; 6 | -------------------------------------------------------------------------------- /.lintstagedrc.json: -------------------------------------------------------------------------------- 1 | { 2 | "*.{ts,tsx}": ["eslint --fix --cache"], 3 | "*.js": ["prettier --write --cache"], 4 | "*.{css,json}": ["prettier --write --cache"] 5 | } 6 | -------------------------------------------------------------------------------- /apps/www/app/(editor)/submit/theory/page.tsx: -------------------------------------------------------------------------------- 1 | import { SubmitTheoryPage } from "~/screens/submit-theory/ui/SubmitTheoryPage"; 2 | 3 | export default SubmitTheoryPage; 4 | -------------------------------------------------------------------------------- /apps/www/entities/category/model/types.ts: -------------------------------------------------------------------------------- 1 | import { CATEGORIES } from "~/entities/category/model/constants"; 2 | 3 | export type Category = (typeof CATEGORIES)[number]; 4 | -------------------------------------------------------------------------------- /apps/www/app/(editor)/submit/question/page.tsx: -------------------------------------------------------------------------------- 1 | import { SubmitQuestionPage } from "~/screens/submit-question/ui/SubmitQuestionPage"; 2 | 3 | export default SubmitQuestionPage; 4 | -------------------------------------------------------------------------------- /apps/www/app/(default)/challenges/page.tsx: -------------------------------------------------------------------------------- 1 | export const dynamic = "force-static"; 2 | 3 | import { ChallengesPage } from "~/screens/challenges/ui"; 4 | 5 | export default ChallengesPage; 6 | -------------------------------------------------------------------------------- /apps/www/components/ui/aspect-ratio.tsx: -------------------------------------------------------------------------------- 1 | import * as AspectRatioPrimitive from "@radix-ui/react-aspect-ratio"; 2 | 3 | const AspectRatio = AspectRatioPrimitive.Root; 4 | 5 | export { AspectRatio }; 6 | -------------------------------------------------------------------------------- /apps/www/entities/resource/lib/faviconUtils.ts: -------------------------------------------------------------------------------- 1 | export function getFaviconUrl(domain: string, size: number = 32): string { 2 | return `https://www.google.com/s2/favicons?domain=${domain}&sz=${size}`; 3 | } 4 | -------------------------------------------------------------------------------- /apps/www/entities/challenge/model/templates/common.ts: -------------------------------------------------------------------------------- 1 | export const commonFiles = { 2 | "/styles.css": { 3 | code: `body { 4 | font-family: sans-serif; 5 | } 6 | 7 | h1 { 8 | font-size: 1.5rem; 9 | }`, 10 | }, 11 | }; 12 | -------------------------------------------------------------------------------- /apps/www/entities/completions/api/getCompletions.ts: -------------------------------------------------------------------------------- 1 | import { supabase } from "~/shared/api/supabase/client"; 2 | 3 | export async function getCompletions({ user_id }) { 4 | return supabase.from("completions").select("*").eq("user_id", user_id); 5 | } 6 | -------------------------------------------------------------------------------- /apps/www/shared/lib/string/escapeHtml.ts: -------------------------------------------------------------------------------- 1 | export function escapeHtml(unsafe: string) { 2 | return unsafe 3 | .replace(/&/g, "&") 4 | .replace(//g, ">") 6 | .replace(/"/g, """) 7 | .replace(/'/g, "'"); 8 | } 9 | -------------------------------------------------------------------------------- /challenges/40-layout-1/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Layout 1 3 | template: vanilla 4 | tags: css, layout 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-03-16" 10 | -------------------------------------------------------------------------------- /challenges/6-debounce/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Debounce 3 | template: tests 4 | tags: javascript, closure 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: 2024-01-14 10 | -------------------------------------------------------------------------------- /apps/www/entities/blog/index.ts: -------------------------------------------------------------------------------- 1 | // API layer exports 2 | export { getAllBlogs, getBlogBySlug } from "./api"; 3 | 4 | // Model layer exports 5 | export type { Blog, BlogListProps, BlogDetailProps } from "./model"; 6 | 7 | // UI layer exports 8 | export { BlogList, BlogDetail } from "./ui"; 9 | -------------------------------------------------------------------------------- /apps/www/entities/challenge/lib/cleanUpReadme.ts: -------------------------------------------------------------------------------- 1 | export function cleanUpReadme(text: string) { 2 | return text 3 | .replace(/[\s\S]*/, "") 4 | .replace(/[\s\S]*/, "") 5 | .trim(); 6 | } 7 | -------------------------------------------------------------------------------- /challenges/10-classnames/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: classNames 3 | template: javascript 4 | tags: javascript 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-02-21" 10 | -------------------------------------------------------------------------------- /challenges/13-isempty/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: IsEmpty 3 | template: javascript 4 | tags: javascript, lodash 5 | author: 6 | github: albinAppsmith 7 | name: Albin 8 | avatar_url: https://avatars.githubusercontent.com/u/87797149?v=4 9 | published_date: "2024-02-21" 10 | -------------------------------------------------------------------------------- /challenges/35-promise-all/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Promise.all 3 | template: javascript 4 | tags: javascript 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-03-15" 10 | -------------------------------------------------------------------------------- /.prettierrc: -------------------------------------------------------------------------------- 1 | { 2 | "printWidth": 120, 3 | "tabWidth": 2, 4 | "useTabs": false, 5 | "semi": true, 6 | "singleQuote": false, 7 | "trailingComma": "all", 8 | "arrowParens": "always", 9 | "plugins": ["prettier-plugin-tailwindcss"], 10 | "tailwindFunctions": ["clsx"] 11 | } 12 | -------------------------------------------------------------------------------- /apps/www/entities/completions/api/deleteCompletions.ts: -------------------------------------------------------------------------------- 1 | import { supabase } from "~/shared/api/supabase/client"; 2 | 3 | export async function deleteCompletion({ challenge_id, user_id }) { 4 | return supabase.from("completions").delete().eq("challenge_id", challenge_id).eq("user_id", user_id); 5 | } 6 | -------------------------------------------------------------------------------- /challenges/141-range/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: range 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-08-08" 11 | -------------------------------------------------------------------------------- /challenges/145-minby/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: minBy 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-08-09" 11 | -------------------------------------------------------------------------------- /challenges/174-re-render-3/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: re-render 3 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-09-18" 11 | -------------------------------------------------------------------------------- /challenges/18-flatten/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: flatten 3 | template: javascript 4 | tags: javascript, utility, lodash 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-02-28" 10 | -------------------------------------------------------------------------------- /challenges/20-throttle/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: throttle 3 | template: javascript 4 | tags: utility, lodash, javascript 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-02-28" 10 | -------------------------------------------------------------------------------- /challenges/32-instanceofclass/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: InstanceOfClass 3 | template: javascript 4 | tags: javascript 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-03-12" 10 | -------------------------------------------------------------------------------- /challenges/364-remounting/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Remounting 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-17" 11 | -------------------------------------------------------------------------------- /challenges/372-re-render-5/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: re-render 5 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-17" 11 | -------------------------------------------------------------------------------- /challenges/378-usedebounce/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: useDebounce 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-17" 11 | -------------------------------------------------------------------------------- /challenges/380-news-board/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: News Board 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-17" 11 | -------------------------------------------------------------------------------- /challenges/385-usereducer/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: useReducer 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-18" 11 | -------------------------------------------------------------------------------- /challenges/47-checkbox/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Checkbox 3 | template: vanilla 4 | tags: css, design-system, html 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-03-26" 10 | -------------------------------------------------------------------------------- /challenges/5-fluid-typography/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Fluid Typography 3 | template: vanilla 4 | tags: css, typography 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: 2024-01-10 10 | -------------------------------------------------------------------------------- /apps/www/shared/api/supabase/client.ts: -------------------------------------------------------------------------------- 1 | import { createBrowserClient } from "@supabase/ssr"; 2 | 3 | export function createClient() { 4 | return createBrowserClient(process.env.NEXT_PUBLIC_SUPABASE_URL!, process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!); 5 | } 6 | 7 | export const supabase = createClient(); 8 | -------------------------------------------------------------------------------- /apps/www/shared/lib/i18n/getFileNameByLocale.ts: -------------------------------------------------------------------------------- 1 | import { DEFAULT_LOCALE } from "~/shared/config/locale"; 2 | 3 | export function getFileNameByLocale(name: string, locale: string, ext: string) { 4 | if (locale === DEFAULT_LOCALE) return `${name}.${ext}`; 5 | 6 | return `${name}.${locale}.${ext}`; 7 | } 8 | -------------------------------------------------------------------------------- /challenges/368-re-render-4/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: re-render 4 3 | type: question 4 | template: react-ts 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-17" 11 | -------------------------------------------------------------------------------- /challenges/37-promise-race/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Promise.race 3 | template: javascript 4 | tags: javascript 5 | author: 6 | github: ashutoshbarthwal 7 | name: Ashutosh Barthwal 8 | avatar_url: https://avatars.githubusercontent.com/u/31532772?v=4 9 | published_date: "2024-03-15" 10 | -------------------------------------------------------------------------------- /challenges/43-promise-any/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Promise.any 3 | template: javascript 4 | tags: javascript, promise 5 | author: 6 | github: nitish8899 7 | name: Nitish Rajput 8 | avatar_url: https://avatars.githubusercontent.com/u/161798180?v=4 9 | published_date: "2024-03-18" 10 | -------------------------------------------------------------------------------- /challenges/446-get/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Get 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-16' 11 | 12 | -------------------------------------------------------------------------------- /challenges/449-curry/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Curry 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-17' 11 | 12 | -------------------------------------------------------------------------------- /challenges/471-pipe/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Pipe 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/515-race/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: race() 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-28' 11 | 12 | -------------------------------------------------------------------------------- /challenges/16-re-render/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: re-render 3 | type: question 4 | template: react 5 | tags: react, performance 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-09-08" 11 | -------------------------------------------------------------------------------- /challenges/366-reconcilation-2/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Reconcilation 2 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-17" 11 | -------------------------------------------------------------------------------- /challenges/374-stale-callback/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Stale Callback 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-17" 11 | -------------------------------------------------------------------------------- /challenges/376-stale-refs/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Stale Refs 3 | type: question 4 | template: react 5 | tags: react, ui-coding 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-17" 11 | -------------------------------------------------------------------------------- /challenges/49-holy-grail/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Holy Grail 3 | type: question 4 | template: vanilla 5 | tags: css, layout 6 | author: 7 | github: nitish8899 8 | name: Nitish Rajput 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-04-15" 11 | -------------------------------------------------------------------------------- /challenges/526-useprevious/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: usePrevious 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-30' 11 | 12 | -------------------------------------------------------------------------------- /challenges/528-react-memo-and-children/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: React.memo and children 3 | type: quiz 4 | tags: react 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: '2025-10-02' 10 | 11 | -------------------------------------------------------------------------------- /challenges/55-memo/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: memo 3 | type: question 4 | template: javascript 5 | tags: javascript, performance 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-04-27" 11 | -------------------------------------------------------------------------------- /apps/www/entities/completions/api/createCompletions.ts: -------------------------------------------------------------------------------- 1 | import { supabase } from "~/shared/api/supabase/client"; 2 | 3 | export async function createCompletion({ challenge_id, user_id }) { 4 | return supabase.from("completions").insert({ 5 | challenge_id: challenge_id, 6 | user_id: user_id, 7 | }); 8 | } 9 | -------------------------------------------------------------------------------- /challenges/360-reconcilation-bug/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Reconcilation Bug 3 | type: question 4 | template: react 5 | tags: react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2025-08-16" 11 | -------------------------------------------------------------------------------- /challenges/405-sampling/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Sampling 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/409-maplimit/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: mapLimit 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/480-jquery-css/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: jQuery.css 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/496-json-parse/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: JSON.parse 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/511-sequence/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: sequence() 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/513-parallel/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: parallel() 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-28' 11 | 12 | -------------------------------------------------------------------------------- /challenges/520-todo-list/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Todo List 3 | type: question 4 | template: react 5 | tags: ui-coding, react 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-30' 11 | 12 | -------------------------------------------------------------------------------- /challenges/531-stopwatch/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Stopwatch 3 | type: question 4 | template: react 5 | tags: react, ui-coding 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-10-03' 11 | 12 | -------------------------------------------------------------------------------- /apps/www/components/ui/skeleton.tsx: -------------------------------------------------------------------------------- 1 | import { cn } from "../../utils/helpers"; 2 | 3 | function Skeleton({ className, ...props }: React.HTMLAttributes) { 4 | return
; 5 | } 6 | 7 | export { Skeleton }; 8 | -------------------------------------------------------------------------------- /challenges/399-tic-tac-toe/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Tic Tac Toe 3 | type: question 4 | template: react 5 | tags: react, ui-coding 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-08-28' 11 | 12 | -------------------------------------------------------------------------------- /challenges/442-deep-clone/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Deep Clone 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-16' 11 | 12 | -------------------------------------------------------------------------------- /challenges/520-todo-list/template.react.md: -------------------------------------------------------------------------------- 1 | 2 | ```jsx App.jsx active 3 | import { TodoList } from "./TodoList"; 4 | 5 | export default function App() { 6 | return ; 7 | } 8 | 9 | ``` 10 | 11 | ```jsx TodoList.jsx 12 | export function TodoList() { 13 | return
MyTodoList
; 14 | } 15 | ``` -------------------------------------------------------------------------------- /challenges/86-chunk/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Chunk 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-06-18" 11 | discussionNo: 88 12 | -------------------------------------------------------------------------------- /challenges/91-stack/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Stack 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-06-24" 11 | discussionNo: 93 12 | -------------------------------------------------------------------------------- /challenges/95-queue/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Queue 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-06-26" 11 | discussionNo: 97 12 | -------------------------------------------------------------------------------- /apps/www/features/code-editor/lib/enableEmmet.ts: -------------------------------------------------------------------------------- 1 | import { Monaco } from "@monaco-editor/react"; 2 | import { emmetHTML, emmetCSS } from "emmet-monaco-es"; 3 | 4 | export function enableEmmet(monaco: Monaco): void { 5 | emmetHTML(monaco); 6 | emmetCSS(monaco); 7 | // emmetJSX(monaco, ["javascript", "typescript"]); 8 | } 9 | -------------------------------------------------------------------------------- /challenges/148-clamp/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: clamp 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-08-09" 11 | discussionNo: 150 12 | -------------------------------------------------------------------------------- /challenges/152-wait/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: wait 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-08-09" 11 | discussionNo: 154 12 | -------------------------------------------------------------------------------- /challenges/161-reject/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: reject 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-08-12" 11 | discussionNo: 163 12 | -------------------------------------------------------------------------------- /challenges/188-two-sums/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Two Sums 3 | type: question 4 | template: typescript 5 | tags: blind 75 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-10-13" 11 | discussionNo: 190 12 | -------------------------------------------------------------------------------- /challenges/271-clone-graph/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Clone Graph 3 | type: question 4 | template: typescript 5 | tags: blind75, graph, dfs 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/321-rotate-matrix/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Rotate Matrix 3 | type: question 4 | template: typescript 5 | tags: blind75, matrix 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/323-spiral-matrix/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Spiral Matrix 3 | type: question 4 | template: typescript 5 | tags: blind75, matrix 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/465-decode-message/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Decode Message 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-22' 11 | 12 | -------------------------------------------------------------------------------- /challenges/491-json-stringify/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: JSON.stringify 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/501-priority-queue/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Priority Queue 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/58-event-emitter/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Event Emitter 3 | type: question 4 | template: javascript 5 | tags: javascript, events 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-05-14" 11 | -------------------------------------------------------------------------------- /challenges/158-shuffle/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: shuffle 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-08-10" 11 | discussionNo: 160 12 | -------------------------------------------------------------------------------- /challenges/277-valid-tree/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Valid Tree 3 | type: question 4 | template: typescript 5 | tags: blind75, graph, union-find 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/295-coin-change/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Coin Change 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/313-merge-intervals/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Merge Intervals 3 | type: question 4 | template: typescript 5 | tags: blind75, intervals 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/317-meeting-schedule/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Meeting Schedule 3 | type: question 4 | template: typescript 5 | tags: blind75, intervals 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/331-reverse-bits/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Reverse Bits 3 | type: question 4 | template: typescript 5 | tags: blind75, bit-manipulation 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/439-snake-to-camelcase/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Snake to CamelCase 3 | type: question 4 | template: typescript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-16' 11 | 12 | -------------------------------------------------------------------------------- /challenges/468-first-bad-version/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: First Bad Version 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/489-detect-data-type/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Detect Data Type 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/509-clearalltimeout/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: clearAllTimeout() 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/109-jest-spyon/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: jest.spyOn 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-07-08" 11 | discussionNo: 111 12 | -------------------------------------------------------------------------------- /challenges/169-re-render-2/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: re-render 2 3 | type: question 4 | template: react 5 | tags: react,performance 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-09-08" 11 | discussionNo: 171 12 | -------------------------------------------------------------------------------- /challenges/183-anagrams/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Anagrams 3 | type: question 4 | template: typescript 5 | tags: arrays,blind75 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-10-13" 11 | discussionNo: 185 12 | -------------------------------------------------------------------------------- /challenges/197-string-encode-and-decode/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: String encode and decode 3 | type: question 4 | template: typescript 5 | tags: blind75 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-01" 11 | -------------------------------------------------------------------------------- /challenges/203-is-palindrome/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Is Palindrome 3 | type: question 4 | template: typescript 5 | tags: blind75, string, two-pointers 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-01" 11 | -------------------------------------------------------------------------------- /challenges/285-house-robber/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: House Robber 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/3-use-hover/info.yml: -------------------------------------------------------------------------------- 1 | title: useHover 2 | 3 | author: 4 | name: Pawan Kumar 5 | email: pawankumar2901@gmail.com 6 | github: jsartisan 7 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 8 | 9 | tags: react, event listeners, hooks 10 | 11 | difficulty: hard 12 | published_date: "2024-02-21" 13 | -------------------------------------------------------------------------------- /challenges/325-set-zeroes-in-matrix/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Set Zeroes in Matrix 3 | type: question 4 | template: typescript 5 | tags: blind75, matrix 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/340-escape-the-overflow-hidden/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Escape the overflow hidden 3 | type: question 4 | template: static 5 | tags: css 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-11" 11 | -------------------------------------------------------------------------------- /challenges/4-use-focus-trap/info.yml: -------------------------------------------------------------------------------- 1 | title: useFocusTrap 2 | 3 | author: 4 | name: Pawan Kumar 5 | email: pawankumar2901@gmail.com 6 | github: jsartisan 7 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 8 | 9 | tags: react, event listeners, hooks 10 | 11 | category: react 12 | 13 | difficulty: hard 14 | -------------------------------------------------------------------------------- /challenges/420-promise-finally/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Promise.finally 3 | type: question 4 | template: javascript 5 | tags: javascript, promises 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/474-immutability-helper/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Immutability Helper 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /apps/www/app/(editor)/layout.tsx: -------------------------------------------------------------------------------- 1 | import { PropsWithChildren } from "react"; 2 | 3 | import { Header } from "~/widgets/Header"; 4 | 5 | export default function Layout(props: PropsWithChildren) { 6 | const { children } = props; 7 | 8 | return ( 9 | <> 10 |
11 | {children} 12 | 13 | ); 14 | } 15 | -------------------------------------------------------------------------------- /challenges/117-composibility/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Composibility 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-07-25" 11 | discussionNo: 127 12 | -------------------------------------------------------------------------------- /challenges/191-anagram-groups/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Anagram Groups 3 | type: question 4 | template: typescript 5 | tags: blind75 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-10-17" 11 | discussionNo: 193 12 | -------------------------------------------------------------------------------- /challenges/217-validate-parentheses/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Validate Parentheses 3 | type: question 4 | template: typescript 5 | tags: blind75, string, stack 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/223-reverse-a-linked-list/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Reverse a Linked List 3 | type: question 4 | template: typescript 5 | tags: blind75, linked-list 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/227-reorder-linked-list/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Reorder Linked List 3 | type: question 4 | template: typescript 5 | tags: blind75, linked-list 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/261-search-for-word/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Search for Word 3 | type: question 4 | template: typescript 5 | tags: blind75, backtracking, matrix 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/283-climbing-stairs/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Climbing Stairs 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/287-house-robber-ii/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: House Robber II 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/293-decode-ways/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Decode Ways 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, string 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/299-word-break/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Word Break 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, string 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/303-count-paths/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Count Paths 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, matrix 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/311-insert-new-interval/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Insert New Interval 3 | type: question 4 | template: typescript 5 | tags: blind75, intervals 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/327-number-of-one-bits/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Number of One Bits 3 | type: question 4 | template: typescript 5 | tags: blind75, bit-manipulation 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/333-missing-number/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Missing Number 3 | type: question 4 | template: typescript 5 | tags: blind75, bit-manipulation, math 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/418-dom-to-object/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: DOM to Object 3 | type: question 4 | template: javascript 5 | tags: javascript, dom, parsing 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/430-custom-promise/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Custom Promise 3 | type: question 4 | template: typescript 5 | tags: typescript, promises, async 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-06' 11 | 12 | -------------------------------------------------------------------------------- /challenges/455-curry-with-placeholder/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Curry with Placeholder 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-21' 11 | 12 | -------------------------------------------------------------------------------- /challenges/99-closure-2/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Closure 2 3 | type: question 4 | template: javascript 5 | tags: javascript, closure 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-07-01" 11 | discussionNo: 101 12 | -------------------------------------------------------------------------------- /challenges/104-queue-using-stack/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Queue using Stack 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-07-02" 11 | discussionNo: 108 12 | -------------------------------------------------------------------------------- /challenges/115-foreach-and-this/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: forEach and this 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-07-25" 11 | discussionNo: 120 12 | -------------------------------------------------------------------------------- /challenges/179-contains-duplicate/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Contains Duplicate 3 | type: question 4 | template: typescript 5 | tags: blind75 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-10-13" 11 | discussionNo: 181 12 | -------------------------------------------------------------------------------- /challenges/205-three-integer-sum/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Three Integer Sum 3 | type: question 4 | template: typescript 5 | tags: blind75, array, two-pointers 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-01" 11 | -------------------------------------------------------------------------------- /challenges/239-same-binary-tree/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Same Binary Tree 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-tree, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/275-course-schedule/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Course Schedule 3 | type: question 4 | template: typescript 5 | tags: blind75, graph, topological-sort 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/309-jump-game/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Jump Game 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, array, greedy 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/319-meeting-schedule-ii/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Meeting Schedule II 3 | type: question 4 | template: typescript 5 | tags: blind75, intervals, greedy 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/335-sum-of-two-integers/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Sum of Two Integers 3 | type: question 4 | template: typescript 5 | tags: blind75, bit-manipulation 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/383-can-you-describe-the-reconciliation-process/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Can you describe the reconciliation process? 3 | type: theory 4 | tags: react 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2025-08-18" 10 | -------------------------------------------------------------------------------- /challenges/407-file-explorer/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: File Explorer 3 | type: question 4 | template: react 5 | tags: react, state-management, nested-data 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/415-test-and-expect/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: test and expect 3 | type: question 4 | template: javascript 5 | tags: javascript, testing, jest 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/207-max-water-container/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Max Water Container 3 | type: question 4 | template: typescript 5 | tags: blind75, array, two-pointers 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-01" 11 | -------------------------------------------------------------------------------- /challenges/235-invert-a-binary-tree/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Invert a Binary Tree 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-tree, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/237-depth-of-binary-tree/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Depth of Binary Tree 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-tree, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/267-search-for-word-ii/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Search for Word II 3 | type: question 4 | template: typescript 5 | tags: blind75, trie, backtracking, matrix 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/269-count-number-of-islands/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Count Number of Islands 3 | type: question 4 | template: typescript 5 | tags: blind75, matrix, dfs 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/281-foreign-dictionary/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Foreign Dictionary 3 | type: question 4 | template: typescript 5 | tags: blind75, graph, topological-sort 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/307-maximum-subarray/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Maximum Subarray 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, array 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/329-counting-bits/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Counting Bits 3 | type: question 4 | template: typescript 5 | tags: blind75, bit-manipulation, dynamic-programming 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/413-html-string-encoder/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Html string encoder 3 | type: question 4 | template: typescript 5 | tags: javascript, string, parsing 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/78-array-prototype-map/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Array.prototype.map 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-06-17" 11 | discussionNo: 80 12 | -------------------------------------------------------------------------------- /challenges/273-pacific-atlantic-water-flow/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Pacific Atlantic Water Flow 3 | type: question 4 | template: typescript 5 | tags: blind75, matrix, dfs 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/424-promise-allsettled/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Promise.allSettled 3 | type: question 4 | template: javascript 5 | tags: javascript, promises, polyfill 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/503-reorder-array-with-new-indexes/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Reorder Array with New Indexes 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | 12 | -------------------------------------------------------------------------------- /challenges/533-trapping-rain-water/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Trapping Rain Water 3 | type: question 4 | template: javascript 5 | tags: javascript, arrays, two-pointers 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-10-07' 11 | 12 | -------------------------------------------------------------------------------- /challenges/74-array-prototype-filter/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Array.prototype.filter 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-06-17" 11 | discussionNo: 76 12 | -------------------------------------------------------------------------------- /challenges/82-array-prototype-reduce/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Array.prototype.reduce 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-06-18" 11 | discussionNo: 84 12 | -------------------------------------------------------------------------------- /challenges/194-top-k-frequent-elements/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Top K Frequent Elements 3 | type: question 4 | template: typescript 5 | tags: blind 75 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-01" 11 | discussionNo: 196 12 | -------------------------------------------------------------------------------- /challenges/199-products-of-array-excluding-self/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Products of Array Excluding Self 3 | type: question 4 | template: typescript 5 | tags: blind75, array 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-01" 11 | -------------------------------------------------------------------------------- /challenges/201-longest-consecutive-sequence/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Longest Consecutive Sequence 3 | type: question 4 | template: typescript 5 | tags: blind75, array, hash-set 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-01" 11 | -------------------------------------------------------------------------------- /challenges/225-merge-two-sorted-linked-lists/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Merge Two Sorted Linked Lists 3 | type: question 4 | template: typescript 5 | tags: blind75, linked-list 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/241-subtree-of-a-binary-tree/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Subtree of a Binary Tree 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-tree, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/257-find-median-in-a-data-stream/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Find Median in a Data Stream 3 | type: question 4 | template: typescript 5 | tags: blind75, heap, data-stream 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/259-combination-target-sum/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Combination Target Sum 3 | type: question 4 | template: typescript 5 | tags: blind75, backtracking, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/279-count-connected-components/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Count Connected Components 3 | type: question 4 | template: typescript 5 | tags: blind75, graph, union-find 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/291-palindromic-substrings/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Palindromic Substrings 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, string 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/315-non-overlapping-intervals/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Non-overlapping Intervals 3 | type: question 4 | template: typescript 5 | tags: blind75, intervals, greedy 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/403-find-highest-commodity-price/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: find-highest-commodity-price 3 | template: javascript 4 | tags: javascript, array, algorithm, search 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: '2025-09-04' 10 | 11 | -------------------------------------------------------------------------------- /apps/www/entities/challenge/api/index.ts: -------------------------------------------------------------------------------- 1 | export { getChallenges } from "./getChallenges"; 2 | export { getChallengeByPathSlim } from "./getChallengeByPathSlim"; 3 | export { getChallengeInfoByLocale } from "./getChallengeInfoByLocale"; 4 | export { getAllChallengesTags } from "./getAllChallengesTags"; 5 | export { getChallengesByTag } from "./getChallengesByTag"; 6 | -------------------------------------------------------------------------------- /challenges/253-binary-tree-maximum-path-sum/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Binary Tree Maximum Path Sum 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-tree, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/263-implement-prefix-tree-trie/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Implement Prefix Tree (Trie) 3 | type: question 4 | template: typescript 5 | tags: blind75, trie, data-structure 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/297-maximum-product-subarray/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Maximum Product Subarray 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, array 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/411-parallel-async-execution/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Parallel async execution 3 | type: question 4 | template: javascript 5 | tags: javascript, async, concurrency 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/422-execute-promises-in-series/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Execute Promises in Series 3 | type: question 4 | template: javascript 5 | tags: javascript, promises, async 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/428-retry-promises-n-times/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Retry Promises N Times 3 | type: question 4 | template: typescript 5 | tags: typescript, promises, async, retry 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-06' 11 | 12 | -------------------------------------------------------------------------------- /challenges/459-debounce-with-leading-and-trailing/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Debounce with Leading & Trailing 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-22' 11 | 12 | -------------------------------------------------------------------------------- /challenges/231-linked-list-cycle-detection/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Linked List Cycle Detection 3 | type: question 4 | template: typescript 5 | tags: blind75, linked-list, two-pointers 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/247-valid-binary-search-tree/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Valid Binary Search Tree 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-search-tree, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/305-longest-common-subsequence/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Longest Common Subsequence 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, string 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/69-two-functions-one-object/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Two functions - one object 3 | type: question 4 | template: javascript 5 | tags: javascript, objects 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-06-04" 11 | discussionNo: 71 12 | -------------------------------------------------------------------------------- /apps/www/app/(editor)/challenges/[slug]/page.tsx: -------------------------------------------------------------------------------- 1 | import { ChallengePage, generateMetadata, generateStaticParams } from "~/screens/challenge/ui/ChallengePage"; 2 | 3 | export const revalidate = false; 4 | export const dynamicParams = false; 5 | export const dynamic = "force-static"; 6 | 7 | export default ChallengePage; 8 | export { generateMetadata, generateStaticParams }; 9 | -------------------------------------------------------------------------------- /apps/www/shared/config/locale.ts: -------------------------------------------------------------------------------- 1 | import * as en from "../../../../locales/en.json"; 2 | 3 | export const TRANSLATIONS = { 4 | en, 5 | } as const; 6 | 7 | export const DEFAULT_LOCALE = "en"; 8 | export const SUPPORTED_LOCALES = Object.keys(TRANSLATIONS) as (keyof typeof TRANSLATIONS)[]; 9 | 10 | export type SupportedLocales = (typeof SUPPORTED_LOCALES)[number]; 11 | -------------------------------------------------------------------------------- /apps/www/shared/config/paths.ts: -------------------------------------------------------------------------------- 1 | export const ROOT_PATH = process.cwd(); 2 | export const REPO = "https://github.com/jsartisan/frontend-challenges"; 3 | export const REPO_API = "https://api.github.com/repos/jsartisan/frontend-challenges"; 4 | export const DOMAIN = process.env.NEXT_BASE_URL || "https://frontend-challenges.com"; 5 | 6 | export const CONTENT_PATH = "./content"; 7 | -------------------------------------------------------------------------------- /apps/www/shared/model/store.ts: -------------------------------------------------------------------------------- 1 | import { create } from "zustand"; 2 | 3 | type UiStore = { 4 | isLoginModalOpen: boolean; 5 | toggleLoginModal: (shouldOpen: boolean) => void; 6 | }; 7 | 8 | export const useUiStore = create((set) => ({ 9 | isLoginModalOpen: false, 10 | toggleLoginModal: (shouldOpen) => set({ isLoginModalOpen: shouldOpen }), 11 | })); 12 | -------------------------------------------------------------------------------- /challenges/209-best-time-to-buy-and-sell-stock/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Best Time to Buy and Sell Stock 3 | type: question 4 | template: typescript 5 | tags: blind75, array, dynamic-programming 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-01" 11 | -------------------------------------------------------------------------------- /challenges/249-kth-smallest-integer-in-bst/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Kth Smallest Integer in BST 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-search-tree, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/265-design-word-search-data-structure/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Design Word Search Data Structure 3 | type: question 4 | template: typescript 5 | tags: blind75, trie, data-structure 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/289-longest-palindromic-substring/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Longest Palindromic Substring 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, string 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/301-longest-increasing-subsequence/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Longest Increasing Subsequence 3 | type: question 4 | template: typescript 5 | tags: blind75, dynamic-programming, array 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/426-priority-based-promise-executor/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Priority-based Promise Executor 3 | type: question 4 | template: javascript 5 | tags: javascript, promises, async 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-05' 11 | 12 | -------------------------------------------------------------------------------- /challenges/215-minimum-window-with-characters/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Minimum Window With Characters 3 | type: question 4 | template: typescript 5 | tags: blind75, string, sliding-window, hash-map 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/221-find-target-in-rotated-sorted-array/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Find Target in Rotated Sorted Array 3 | type: question 4 | template: typescript 5 | tags: blind75, array, binary-search 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/233-merge-k-sorted-linked-lists/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Merge K Sorted Linked Lists 3 | type: question 4 | template: typescript 5 | tags: blind75, linked-list, heap, divide-and-conquer 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/245-level-order-traversal-of-binary-tree/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Level Order Traversal of Binary Tree 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-tree, bfs 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /apps/www/features/leaderboard/hooks/useLeaderboard.ts: -------------------------------------------------------------------------------- 1 | import { useQuery } from "@tanstack/react-query"; 2 | 3 | import { getLeadboardUsersWithCount } from "~/features/leaderboard/api/getLeadboardUsers"; 4 | 5 | export function useLeaderboard() { 6 | return useQuery({ 7 | queryKey: ["leaderboard"], 8 | queryFn: () => getLeadboardUsersWithCount(), 9 | }); 10 | } 11 | -------------------------------------------------------------------------------- /challenges/219-find-minimum-in-rotated-sorted-array/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Find Minimum in Rotated Sorted Array 3 | type: question 4 | template: typescript 5 | tags: blind75, array, binary-search 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/229-remove-node-from-end-of-linked-list/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Remove Node From End of Linked List 3 | type: question 4 | template: typescript 5 | tags: blind75, linked-list, two-pointers 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /apps/www/screens/blog/ui/BlogDetailPage.tsx: -------------------------------------------------------------------------------- 1 | import { BlogDetail } from "~/entities/blog/ui"; 2 | import { getBlogBySlug } from "~/entities/blog/api"; 3 | 4 | async function BlogDetailPage(props: PageProps<"/blog/[slug]">) { 5 | const blog = await getBlogBySlug((await props.params).slug); 6 | 7 | return ; 8 | } 9 | 10 | export { BlogDetailPage }; 11 | -------------------------------------------------------------------------------- /apps/www/scripts/actions/types.ts: -------------------------------------------------------------------------------- 1 | import type IO from "@actions/io"; 2 | import type Core from "@actions/core"; 3 | import type { context, getOctokit } from "@actions/github"; 4 | 5 | export type Context = typeof context; 6 | export type Github = ReturnType; 7 | export type Action = (github: Github, context: Context, core: typeof Core, io: typeof IO) => Promise; 8 | -------------------------------------------------------------------------------- /challenges/255-serialize-and-deserialize-binary-tree/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: hard 2 | title: Serialize and Deserialize Binary Tree 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-tree, serialization 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/358-closure-3/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Closure 3 3 | type: quiz 4 | tags: javascript 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2025-08-15" 10 | options: 11 | - "Pete" 12 | - "John" 13 | - "undefined" 14 | - "Error" 15 | right_answer: "Pete" 16 | -------------------------------------------------------------------------------- /challenges/432-throttle-with-leading-and-trailing/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Throttle with Leading and Trailing 3 | type: question 4 | template: typescript 5 | tags: javascript, throttle, performance 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-06' 11 | 12 | -------------------------------------------------------------------------------- /challenges/498-sum-function/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Sum Function 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | resources: 12 | - https://javascript.info/object-toprimitive 13 | 14 | -------------------------------------------------------------------------------- /challenges/528-react-memo-and-children/README.md: -------------------------------------------------------------------------------- 1 | Consider the following code: 2 | 3 | ```js 4 | const ChildMemo = React.memo(Child); 5 | const Component = () => { 6 | return ( 7 | 8 |
Some text here
9 | 10 | ); 11 | }; 12 | ``` 13 | 14 | Let's say a state change happens in the `Component`, will `ChildMemo` re-render or not? 15 | -------------------------------------------------------------------------------- /apps/www/components/ui/collapsible.tsx: -------------------------------------------------------------------------------- 1 | import * as CollapsiblePrimitive from "@radix-ui/react-collapsible"; 2 | 3 | const Collapsible = CollapsiblePrimitive.Root; 4 | 5 | const CollapsibleTrigger = CollapsiblePrimitive.CollapsibleTrigger; 6 | 7 | const CollapsibleContent = CollapsiblePrimitive.CollapsibleContent; 8 | 9 | export { Collapsible, CollapsibleTrigger, CollapsibleContent }; 10 | -------------------------------------------------------------------------------- /challenges/213-longest-repeating-substring-with-replacement/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Longest Repeating Substring With Replacement 3 | type: question 4 | template: typescript 5 | tags: blind75, string, sliding-window 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/350-promise-chain-output/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Promise Chain Output 3 | type: quiz 4 | tags: javascript, promises 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-12-26" 10 | options: 11 | - "6" 12 | - "4" 13 | - "3" 14 | - "2" 15 | right_answer: "6" 16 | -------------------------------------------------------------------------------- /challenges/389-useeffect/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: useEffect 3 | type: quiz 4 | tags: react 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: '2025-08-19' 10 | options: 11 | - "0 0 1 0" 12 | - "0 1 1 1" 13 | - "0 0 1 1" 14 | - "1 0 1 0" 15 | right_answer: "0 0 1 0" 16 | 17 | -------------------------------------------------------------------------------- /challenges/45-specificity/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Specificity 3 | tags: css 4 | type: quiz 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-03-20" 10 | options: 11 | - "purple" 12 | - "red" 13 | - "blue" 14 | - "green" 15 | right_answer: "red" 16 | level: junior 17 | -------------------------------------------------------------------------------- /apps/www/features/auth/hooks/useAuth.ts: -------------------------------------------------------------------------------- 1 | import { useQuery } from "@tanstack/react-query"; 2 | 3 | import { getAuthUser } from "~/features/auth/api/getAuthUser"; 4 | 5 | export function useAuth() { 6 | const profileQuery = useQuery({ 7 | queryKey: ["user"], 8 | queryFn: getAuthUser, 9 | }); 10 | 11 | return { isLoading: profileQuery.isPending, user: profileQuery.data }; 12 | } 13 | -------------------------------------------------------------------------------- /challenges/2-click-outisde/info.yml: -------------------------------------------------------------------------------- 1 | title: useClickOutside 2 | excerpt: Implement a custom hook that listens for clicks outside of a given element. 3 | author: 4 | name: Pawan Kumar 5 | email: pawankumar2901@gmail.com 6 | github: jsartisan 7 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 8 | tags: react, event listeners, hooks 9 | template: react 10 | difficulty: easy 11 | -------------------------------------------------------------------------------- /challenges/251-binary-tree-from-preorder-and-inorder-traversal/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Binary Tree from Preorder and Inorder Traversal 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-tree, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/243-lowest-common-ancestor-in-binary-search-tree/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Lowest Common Ancestor in Binary Search Tree 3 | type: question 4 | template: typescript 5 | tags: blind75, binary-search-tree, recursion 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-02" 11 | -------------------------------------------------------------------------------- /challenges/211-longest-substring-without-repeating-characters/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Longest Substring Without Repeating Characters 3 | type: question 4 | template: typescript 5 | tags: blind75, string, sliding-window, hash-map 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: "2024-11-01" 11 | -------------------------------------------------------------------------------- /apps/www/app/(editor)/play/page.tsx: -------------------------------------------------------------------------------- 1 | "use client"; 2 | 3 | import dynamic from "next/dynamic"; 4 | 5 | import Loading from "./loading"; 6 | 7 | const PlaygroundPage = dynamic( 8 | () => import("~/screens/playground/ui/PlaygroundPage").then((mod) => mod.PlaygroundEditor), 9 | { 10 | loading: Loading, 11 | }, 12 | ); 13 | 14 | export default function Page() { 15 | return ; 16 | } 17 | -------------------------------------------------------------------------------- /challenges/348-promise-resolution-order/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Promise Resolution Order 3 | type: quiz 4 | tags: javascript, promises 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-12-26" 10 | options: 11 | - "1" 12 | - "2" 13 | - "error" 14 | - "1, 2, error" 15 | right_answer: "1" 16 | -------------------------------------------------------------------------------- /challenges/4-use-focus-trap/template.react.md: -------------------------------------------------------------------------------- 1 | ```js App.jsx 2 | import { useFocusTrap } from "./useFocusTrap"; 3 | 4 | function App() { 5 | const focusTrapRef = useFocusTrap(); 6 | 7 | return ( 8 |
9 | 10 |
11 | ); 12 | } 13 | 14 | export default App; 15 | ``` 16 | 17 | ```js useFocusTrap.js active 18 | export function useFocusTrap() {} 19 | ``` 20 | -------------------------------------------------------------------------------- /apps/www/components.json: -------------------------------------------------------------------------------- 1 | { 2 | "$schema": "https://ui.shadcn.com/schema.json", 3 | "style": "new-york", 4 | "rsc": false, 5 | "tsx": true, 6 | "tailwind": { 7 | "config": "tailwind.config.js", 8 | "css": "app/globals.css", 9 | "baseColor": "slate", 10 | "cssVariables": true 11 | }, 12 | "aliases": { 13 | "components": "@/components", 14 | "utils": "@/lib/utils" 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /challenges/391-useeffect-2/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: useEffect 2 3 | type: quiz 4 | tags: react 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: '2025-08-19' 10 | options: 11 | - "false, false" 12 | - "true, false" 13 | - "false, true" 14 | - "true, true" 15 | right_answer: "false, false" 16 | 17 | -------------------------------------------------------------------------------- /apps/www/features/code-editor/hooks/useLayout.tsx: -------------------------------------------------------------------------------- 1 | "use client"; 2 | import { useContext } from "react"; 3 | 4 | import { LayoutContext } from "../context/LayoutProvider"; 5 | 6 | export function useLayout() { 7 | const context = useContext(LayoutContext); 8 | 9 | if (context === undefined) { 10 | throw new Error("useLayout must be used within a LayoutProvider"); 11 | } 12 | 13 | return context; 14 | } 15 | -------------------------------------------------------------------------------- /apps/www/app/(default)/categories/[category]/page.tsx: -------------------------------------------------------------------------------- 1 | import { CATEGORIES } from "~/entities/category"; 2 | import { CategoryDetailPage } from "~/screens/categories"; 3 | 4 | export const revalidate = false; 5 | export const dynamic = "force-static"; 6 | 7 | export function generateStaticParams() { 8 | return CATEGORIES.map((category) => ({ 9 | category, 10 | })); 11 | } 12 | 13 | export default CategoryDetailPage; 14 | -------------------------------------------------------------------------------- /challenges/483-node-store/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Node Store 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | resources: 12 | - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/for 13 | 14 | -------------------------------------------------------------------------------- /apps/www/components/ui/link.tsx: -------------------------------------------------------------------------------- 1 | "use client"; 2 | 3 | import * as React from "react"; 4 | import NextLink from "next/link"; 5 | 6 | const Link = React.forwardRef, React.ComponentPropsWithoutRef>( 7 | ({ prefetch, ...props }, ref) => , 8 | ); 9 | 10 | Link.displayName = "Link"; 11 | 12 | export { Link }; 13 | -------------------------------------------------------------------------------- /apps/www/entities/category/index.ts: -------------------------------------------------------------------------------- 1 | // API layer exports 2 | export { getChallengesByCategory, filterChallengesByCategory } from "./api"; 3 | 4 | // Model layer exports 5 | export type { Category } from "./model"; 6 | export { CATEGORIES } from "./model"; 7 | 8 | // UI layer exports 9 | export { CategoryList } from "./ui"; 10 | 11 | // Lib layer exports 12 | export { mapCategoriesWithCount } from "./lib/mapCategoriesWithCount"; 13 | -------------------------------------------------------------------------------- /apps/www/shared/lib/i18n/translate.ts: -------------------------------------------------------------------------------- 1 | import { DEFAULT_LOCALE, TRANSLATIONS, type SupportedLocales } from "~/shared/config/locale"; 2 | 3 | export function translate(locale: SupportedLocales, key: string): string { 4 | const result = (TRANSLATIONS[locale] && TRANSLATIONS[locale][key]) || TRANSLATIONS[DEFAULT_LOCALE][key]; 5 | 6 | if (!result) throw new Error(`Missing message for key "${key}"`); 7 | 8 | return result; 9 | } 10 | -------------------------------------------------------------------------------- /apps/www/features/code-editor/hooks/useSandpackLocal.ts: -------------------------------------------------------------------------------- 1 | import { useContext } from "react"; 2 | 3 | import { SandpackLocalContext } from "../context/SandpackLocalProvider"; 4 | 5 | export const useSandpackLocal = () => { 6 | const context = useContext(SandpackLocalContext); 7 | 8 | if (!context) { 9 | throw new Error("useSandpackLocal must be used within a SandpackLocalProvider"); 10 | } 11 | 12 | return context; 13 | }; 14 | -------------------------------------------------------------------------------- /challenges/113-losing-this/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Losing this 3 | type: quiz 4 | tags: javascript 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-07-17" 10 | options: 11 | - "Hello, John!" 12 | - "Hello, undefined!" 13 | - "Hello, user!" 14 | - "Error: Cannot read property" 15 | right_answer: "Hello, undefined!" 16 | -------------------------------------------------------------------------------- /challenges/434-multi-stepper-component/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: Multi-Stepper Component 3 | type: question 4 | template: react-ts 5 | tags: react, typescript, components, ui-coding 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-06' 11 | resources: 12 | - https://react.dev/reference/react/useImperativeHandle 13 | 14 | -------------------------------------------------------------------------------- /apps/www/entities/category/lib/mapCategoriesWithCount.ts: -------------------------------------------------------------------------------- 1 | import { ChallengeList } from "~/entities/challenge/model/types"; 2 | import { CATEGORIES } from "~/entities/category/model/constants"; 3 | 4 | export function mapCategoriesWithCount(challenges: ChallengeList) { 5 | return CATEGORIES.map((category) => ({ 6 | name: category, 7 | challengesCount: challenges.filter((challenge) => challenge.category === category).length, 8 | })); 9 | } 10 | -------------------------------------------------------------------------------- /apps/www/utils/helpers.ts: -------------------------------------------------------------------------------- 1 | import { twMerge } from "tailwind-merge"; 2 | import { type ClassValue, clsx } from "clsx"; 3 | import { Children, isValidElement } from "react"; 4 | 5 | export function cn(...inputs: ClassValue[]) { 6 | return twMerge(clsx(inputs)); 7 | } 8 | 9 | export function getValidChildren(children: React.ReactNode) { 10 | return Children.toArray(children).filter((child) => isValidElement(child)) as React.ReactElement[]; 11 | } 12 | -------------------------------------------------------------------------------- /challenges/395-react-useeffect-micro-macro-tasks/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: useEffect + Macro/Micro Tasks 3 | type: quiz 4 | tags: react 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: '2025-08-19' 10 | options: 11 | - "1, 3, 4, 2" 12 | - "1, 2, 3, 4" 13 | - "1, 3, 2, 4" 14 | - "1, 4, 3, 2" 15 | right_answer: "1, 3, 4, 2" 16 | 17 | -------------------------------------------------------------------------------- /apps/www/screens/roadmaps/ui/RoadmapDetailPage.tsx: -------------------------------------------------------------------------------- 1 | import { RoadmapDetail } from "~/entities/roadmap/ui"; 2 | import { getRoadmapByPath } from "~/entities/roadmap/api"; 3 | 4 | async function RoadmapDetailPage(props: PageProps<"/challenges/[slug]">) { 5 | const slug = (await props.params).slug; 6 | 7 | const roadmap = await getRoadmapByPath(slug); 8 | 9 | return ; 10 | } 11 | 12 | export { RoadmapDetailPage }; 13 | -------------------------------------------------------------------------------- /apps/www/entities/comment/model/types.ts: -------------------------------------------------------------------------------- 1 | export type Comment = { 2 | id: number; 3 | body: string; 4 | created_at: string; 5 | updated_at: string; 6 | user: { 7 | login: string; 8 | avatar_url: string; 9 | }; 10 | reactions: { 11 | "+1": number; 12 | "-1": number; 13 | laugh: number; 14 | hooray: number; 15 | confused: number; 16 | heart: number; 17 | rocket: number; 18 | eyes: number; 19 | }; 20 | }; 21 | -------------------------------------------------------------------------------- /apps/www/shared/context/ThemeProvider.tsx: -------------------------------------------------------------------------------- 1 | "use client"; 2 | 3 | import * as React from "react"; 4 | import { type ThemeProviderProps } from "next-themes/dist/types"; 5 | import { ThemeProvider as NextThemesProvider } from "next-themes"; 6 | 7 | export function ThemeProvider({ children, ...props }: ThemeProviderProps) { 8 | return ( 9 | 10 | {children} 11 | 12 | ); 13 | } 14 | -------------------------------------------------------------------------------- /challenges/3-use-hover/template.react.md: -------------------------------------------------------------------------------- 1 | ```js App.jsx 2 | import { useHover } from "./useHover"; 3 | 4 | function App() { 5 | const { hovered, ref } = useHover(); 6 | 7 | return
{hovered ? "I am hovered" : "Put mouse over me please"}
; 8 | } 9 | 10 | export default App; 11 | ``` 12 | 13 | ```js useHover.js active 14 | import { useCallback, useEffect, useRef, useState } from "react"; 15 | 16 | export function useHover() {} 17 | ``` 18 | -------------------------------------------------------------------------------- /challenges/8-closure/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Closure 3 | tags: closure, javascript 4 | author: 5 | github: jsartisan 6 | name: Pawan Kumar 7 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 8 | published_date: "2024-02-18" 9 | type: quiz 10 | options: 11 | - "3 3 3 and 0 1 2" 12 | - "0 1 2 and 3 3 3" 13 | - "3 3 3 and 3 3 3" 14 | - "0 1 2 and 0 1 2" 15 | right_answer: "3 3 3 and 0 1 2" 16 | level: junior, mid-level 17 | -------------------------------------------------------------------------------- /challenges/121-f-prototype/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: F.prototype 3 | type: quiz 4 | tags: javascript 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-07-27" 10 | discussionNo: 125 11 | options: 12 | - "true, true, false" 13 | - "true, false, false" 14 | - "false, true, false" 15 | - "true, true, true" 16 | right_answer: "true, true, false" 17 | -------------------------------------------------------------------------------- /apps/www/entities/challenge/api/getChallengesByTag.ts: -------------------------------------------------------------------------------- 1 | import type { ChallengeList } from "~/entities/challenge/model/types"; 2 | 3 | import { getChallengeInfoByLocale } from "./getChallengeInfoByLocale"; 4 | 5 | export function getChallengesByTag(challenges: ChallengeList, locale: string, tag: string) { 6 | return challenges.filter((quiz) => { 7 | const info = getChallengeInfoByLocale(quiz, locale); 8 | 9 | return !!info.tags?.includes(tag); 10 | }); 11 | } 12 | -------------------------------------------------------------------------------- /challenges/531-stopwatch/template.react.md: -------------------------------------------------------------------------------- 1 | ```jsx App.jsx 2 | import { Stopwatch } from "./Stopwatch"; 3 | 4 | export default function App() { 5 | return 6 | } 7 | 8 | ``` 9 | 10 | ```jsx Stopwatch.jsx active 11 | export function Stopwatch() { 12 | return ( 13 |
14 |

0s 00ms

15 |
16 | 17 |
18 |
19 | ); 20 | } 21 | 22 | ``` 23 | 24 | 25 | -------------------------------------------------------------------------------- /challenges/376-stale-refs/template.react.md: -------------------------------------------------------------------------------- 1 | ```jsx App.jsx active 2 | import { useState, useRef } from "react"; 3 | 4 | export default function App() { 5 | const [value, setValue] = useState(); 6 | 7 | const ref = useRef(() => { 8 | console.log("Submitted value:" + value); 9 | }); 10 | 11 | return ( 12 | <> 13 | setValue(e.target.value)} /> 14 | 15 | 16 | ); 17 | } 18 | ``` 19 | -------------------------------------------------------------------------------- /challenges/401-usestate/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: useState 3 | type: quiz 4 | tags: react 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: '2025-08-29' 10 | resources: 11 | - https://react.dev/learn/state-as-a-snapshot 12 | options: 13 | - "0 2 4 6 8..." 14 | - "0 1 2 3 4..." 15 | - "0 3 6 9 12..." 16 | right_answer: "0 2 4 6 8..." 17 | level: junior,mid-level 18 | 19 | -------------------------------------------------------------------------------- /challenges/66-this/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: this 3 | type: quiz 4 | tags: javascript, objects 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-06-03" 10 | discussionNo: 68 11 | options: 12 | - "John Doe" 13 | - "undefined" 14 | - "Error: Cannot read property 'name' of undefined" 15 | - "null" 16 | right_answer: "Error: Cannot read property 'name' of undefined" 17 | -------------------------------------------------------------------------------- /apps/www/features/submission-theory/model/formSchema.ts: -------------------------------------------------------------------------------- 1 | import { z } from "zod"; 2 | 3 | import { Difficulty } from "~/entities/challenge/model/types"; 4 | import { DIFFICULTY_RANK } from "~/entities/challenge/model/constants"; 5 | 6 | export const formSchema = z.object({ 7 | title: z.string().min(2).max(100), 8 | tags: z.string(), 9 | type: z.enum(["question", "quiz", "theory"]), 10 | answer: z.string().optional(), 11 | difficulty: z.enum(DIFFICULTY_RANK as [Difficulty]), 12 | }); 13 | -------------------------------------------------------------------------------- /challenges/346-promise-order/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Promise Order 3 | type: quiz 4 | tags: javascript, promises 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-12-26" 10 | options: 11 | - "1, 2, 3, 4, 7, 5, 6, 9, 8" 12 | - "1, 2, 3, 4, 5, 6, 7, 8, 9" 13 | - "1, 4, 7, 2, 3, 5, 6, 9, 8" 14 | - "1, 2, 3, 4, 7, 8, 9, 5, 6" 15 | right_answer: "1, 2, 3, 4, 7, 5, 6, 9, 8" 16 | -------------------------------------------------------------------------------- /challenges/374-stale-callback/template.react.md: -------------------------------------------------------------------------------- 1 | ```jsx App.jsx 2 | import { useState, useCallback } from "react"; 3 | 4 | export default function App() { 5 | const [value, setValue] = useState(); 6 | 7 | const onClick = useCallback(() => { 8 | console.log("Submitted value:" + value); 9 | }, []); 10 | 11 | return ( 12 | <> 13 | setValue(e.target.value)} /> 14 | 15 | 16 | ); 17 | } 18 | ``` 19 | -------------------------------------------------------------------------------- /challenges/61-logical-operators/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Logical Operators 3 | type: quiz 4 | tags: javascript, logical operators 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-05-18" 10 | discussionNo: 65 11 | options: 12 | - | 13 | "&&" and "||" 14 | - | 15 | "==" and "!=" 16 | - | 17 | "===" and "!==" 18 | - | 19 | "++" and "--" 20 | right_answer: 2 21 | -------------------------------------------------------------------------------- /challenges/69-two-functions-one-object/template.javascript.md: -------------------------------------------------------------------------------- 1 | ```js index.js 2 | export function A() { 3 | // your code here 4 | } 5 | 6 | export function B() { 7 | // your code here 8 | } 9 | ``` 10 | 11 | ```js index.test.js 12 | import { A, B } from "./index"; 13 | 14 | describe("Constructor Functions A and B", () => { 15 | test("new A() should equal new B()", () => { 16 | let a = new A(); 17 | let b = new B(); 18 | 19 | expect(a).toBe(b); 20 | }); 21 | }); 22 | ``` 23 | -------------------------------------------------------------------------------- /apps/www/entities/blog/model/types.ts: -------------------------------------------------------------------------------- 1 | export type Blog = { 2 | title: string; 3 | path: string; 4 | slug: string; 5 | excerpt: string; 6 | published_at: string; 7 | tags: string[]; 8 | code: string; 9 | emoji: string; 10 | }; 11 | 12 | /** 13 | * Props for blog list components 14 | */ 15 | export interface BlogListProps { 16 | blogs: Blog[]; 17 | } 18 | 19 | /** 20 | * Props for blog detail components 21 | */ 22 | export interface BlogDetailProps { 23 | blog: Blog; 24 | } 25 | -------------------------------------------------------------------------------- /apps/www/entities/challenge/lib/sortChallengesByDifficulty.ts: -------------------------------------------------------------------------------- 1 | import { ChallengeList } from "~/entities/challenge/model/types"; 2 | import { DIFFICULTY_RANK } from "~/entities/challenge/model/constants"; 3 | 4 | export function sortChallengesByDifficulty(challenges: ChallengeList, sort_order?: "asc" | "desc") { 5 | return challenges.sort( 6 | (a, b) => 7 | (DIFFICULTY_RANK.indexOf(a.difficulty) - DIFFICULTY_RANK.indexOf(b.difficulty)) * (sort_order === "asc" ? 1 : -1), 8 | ); 9 | } 10 | -------------------------------------------------------------------------------- /challenges/393-useeffect-3/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: medium 2 | title: useEffect 3 3 | type: quiz 4 | tags: react 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: '2025-08-19' 10 | options: 11 | - "1, 5, 2, 4, 1, 6, 3, 5, 2" 12 | - "1, 2, 4, 5, 1, 3, 6, 2, 5" 13 | - "1, 4, 2, 5, 1, 3, 6, 5, 2" 14 | - "1, 2, 5, 4, 1, 6, 3, 2, 5" 15 | right_answer: "1, 5, 2, 4, 1, 6, 3, 5, 2" 16 | level: senior 17 | 18 | -------------------------------------------------------------------------------- /challenges/348-promise-resolution-order/solution.md: -------------------------------------------------------------------------------- 1 | The code will output: 2 | 3 | ``` 4 | 1 5 | ``` 6 | 7 | This is because: 8 | 9 | 1. In a Promise, only the first `resolve()` or `reject()` call takes effect 10 | 2. Once a Promise is settled (either resolved or rejected), it cannot change its state 11 | 3. In this case, `resolve(1)` is called first, so the subsequent `resolve(2)` and `reject('error')` are ignored 12 | 4. The `.then()` handler receives the value from the first `resolve(1)` call and logs it 13 | -------------------------------------------------------------------------------- /challenges/401-usestate/README.md: -------------------------------------------------------------------------------- 1 | What will be the output in console for the following code when button is clicked: 2 | 3 | ```jsx 4 | import { useState, Suspense } from "react"; 5 | 6 | export default function App() { 7 | const [count, setCount] = useState(0); 8 | 9 | const updateCount = () => { 10 | setCount(count + 1); 11 | setCount(count + 2); 12 | } 13 | 14 | console.log(count); 15 | 16 | return ( 17 | 18 | ); 19 | } 20 | ``` 21 | -------------------------------------------------------------------------------- /apps/www/entities/comment/hooks/useComment.ts: -------------------------------------------------------------------------------- 1 | import { useQuery } from "@tanstack/react-query"; 2 | 3 | import { getAllIssueComments } from "~/entities/comment/api/getIssueComments"; 4 | 5 | export function useComment(challengeNo: number) { 6 | const commentQuery = useQuery({ 7 | queryKey: ["comment", challengeNo], 8 | queryFn: async () => { 9 | return getAllIssueComments(challengeNo); 10 | }, 11 | }); 12 | 13 | return { isLoading: commentQuery.isPending, data: commentQuery.data }; 14 | } 15 | -------------------------------------------------------------------------------- /apps/www/entities/roadmap/api/getRoadmaps.ts: -------------------------------------------------------------------------------- 1 | import fs from "fs"; 2 | 3 | import type { Roadmap } from "~/entities/roadmap/model/types"; 4 | 5 | import { ROADMAP_ROOT } from "../model/constants"; 6 | import { getRoadmapByPath } from "./getRoadmapByPath"; 7 | 8 | export async function getRoadmaps(): Promise { 9 | const folders = fs.readdirSync(ROADMAP_ROOT); 10 | 11 | const studyPlans = await Promise.all(folders.map(async (dir: string) => getRoadmapByPath(dir))); 12 | 13 | return studyPlans; 14 | } 15 | -------------------------------------------------------------------------------- /challenges/121-f-prototype/solution.md: -------------------------------------------------------------------------------- 1 | The output will be: 2 | 3 | ``` 4 | true 5 | true 6 | false 7 | ``` 8 | 9 | - `rabbit1.eats` logs `true` because `rabbit1` is created when `Rabbit.prototype` has `eats` set to `true`. 10 | - `rabbit1.eats` logs `true` again because reassigning `Rabbit.prototype` creates a new prototype object but does not affect existing instances. 11 | - `rabbit2.eats` logs `false` because `rabbit2` is created after `Rabbit.prototype` is reassigned to a new object with `eats` set to `false`. 12 | -------------------------------------------------------------------------------- /challenges/1-rtl-icon/info.yml: -------------------------------------------------------------------------------- 1 | title: Icon and RTL 2 | excerpt: Fix the broken icon in RTL mode. 3 | difficulty: easy 4 | author: 5 | name: Pawan Kumar 6 | email: pawankumar2901@gmail.com 7 | github: jsartisan 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | tags: css, logical properties 10 | resources: 11 | - https://developer.mozilla.org/en-US/docs/Web/CSS/margin-inline-start 12 | - https://css-tricks.com/almanac/properties/g/gap/ 13 | template: vanilla 14 | published_date: 2024-01-03 15 | -------------------------------------------------------------------------------- /challenges/123-f-prototype-and-constructor/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: F.prototype and constructor 3 | type: quiz 4 | tags: javascript 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: "2024-07-27" 10 | discussionNo: 126 11 | options: 12 | - "John, true, Pete, false" 13 | - "John, true, Pete, true" 14 | - "John, false, Pete, false" 15 | - "John, false, Pete, true" 16 | right_answer: "John, true, Pete, false" 17 | -------------------------------------------------------------------------------- /apps/www/components/ui/icon-button.tsx: -------------------------------------------------------------------------------- 1 | "use client"; 2 | 3 | import React, { ComponentRef, forwardRef } from "react"; 4 | 5 | import { cn } from "../../utils/helpers"; 6 | import { ButtonProps, Button } from "./button"; 7 | 8 | export const IconButton = forwardRef, ButtonProps>((props, ref) => { 9 | const { className, ...rest } = props; 10 | 11 | return ; 12 | }); 13 | 14 | IconButton.displayName = "IconButton"; 15 | -------------------------------------------------------------------------------- /challenges/486-find-corresponding-node/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | title: Find Corresponding Node 3 | type: question 4 | template: javascript 5 | tags: javascript 6 | author: 7 | github: jsartisan 8 | name: Pawan Kumar 9 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 10 | published_date: '2025-09-27' 11 | resources: 12 | - https://developer.mozilla.org/en-US/docs/Web/API/TreeWalker 13 | - https://developer.mozilla.org/en-US/docs/Web/API/Document/children 14 | - https://javascript.info/dom-navigation 15 | -------------------------------------------------------------------------------- /apps/www/entities/challenge/api/getAllChallengesTags.ts: -------------------------------------------------------------------------------- 1 | import { ChallengeList } from "~/entities/challenge/model/types"; 2 | 3 | import { getChallengeInfoByLocale } from "./getChallengeInfoByLocale"; 4 | 5 | export function getAllChallengesTags(challenges: ChallengeList, locale: string) { 6 | const set = new Set(); 7 | for (const quiz of challenges) { 8 | const info = getChallengeInfoByLocale(quiz, locale); 9 | for (const tag of info?.tags || []) set.add(tag); 10 | } 11 | return Array.from(set).sort(); 12 | } 13 | -------------------------------------------------------------------------------- /challenges/7-promise-order/info.yml: -------------------------------------------------------------------------------- 1 | difficulty: easy 2 | importance: high 3 | title: Promise Order 4 | tags: javascript, promise, event loop 5 | author: 6 | github: jsartisan 7 | name: Pawan Kumar 8 | avatar_url: https://avatars.githubusercontent.com/u/6636360?v=4 9 | published_date: 2024-02-02 10 | type: quiz 11 | options: 12 | - "1, 2, 3, 4, 7, 5, 6, 9, 8" 13 | - "1, 2, 3, 4, 5, 6, 7, 8, 9" 14 | - "1, 2, 3, 4, 7, 8, 9, 5, 6" 15 | - "1, 4, 7, 2, 3, 5, 6, 9, 8" 16 | right_answer: "1, 2, 3, 4, 7, 5, 6, 9, 8" 17 | level: junior 18 | -------------------------------------------------------------------------------- /apps/www/app/(default)/layout.tsx: -------------------------------------------------------------------------------- 1 | import { PropsWithChildren } from "react"; 2 | 3 | import { Header } from "~/widgets/Header"; 4 | import { Footer } from "~/widgets/Footer"; 5 | 6 | export default function Layout(props: PropsWithChildren) { 7 | const { children } = props; 8 | 9 | return ( 10 | <> 11 |
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{children}
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