├── .github └── workflows │ └── semgrep.yml ├── .gitignore ├── .prettierrc ├── CODE_OF_CONDUCT.md ├── LICENSE_APACHE ├── LICENSE_MIT ├── README.md ├── jest.config.js ├── package-lock.json ├── package.json ├── rollup.config.mjs ├── src ├── counter.ts ├── index.test.ts └── index.ts ├── tsconfig.json └── wrangler.toml /.github/workflows/semgrep.yml: -------------------------------------------------------------------------------- 1 | on: 2 | pull_request: {} 3 | workflow_dispatch: {} 4 | push: 5 | branches: 6 | - main 7 | - master 8 | schedule: 9 | - cron: '0 0 * * *' 10 | name: Semgrep config 11 | jobs: 12 | semgrep: 13 | name: semgrep/ci 14 | runs-on: ubuntu-latest 15 | env: 16 | SEMGREP_APP_TOKEN: ${{ secrets.SEMGREP_APP_TOKEN }} 17 | SEMGREP_URL: https://cloudflare.semgrep.dev 18 | SEMGREP_APP_URL: https://cloudflare.semgrep.dev 19 | SEMGREP_VERSION_CHECK_URL: https://cloudflare.semgrep.dev/api/check-version 20 | container: 21 | image: semgrep/semgrep 22 | steps: 23 | - uses: actions/checkout@v4 24 | - run: semgrep ci 25 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | /target 2 | /dist 3 | /tscOutDir 4 | **/*.rs.bk 5 | Cargo.lock 6 | bin/ 7 | pkg/ 8 | wasm-pack.log 9 | worker/ 10 | node_modules/ 11 | .cargo-ok 12 | -------------------------------------------------------------------------------- /.prettierrc: -------------------------------------------------------------------------------- 1 | { 2 | "singleQuote": true, 3 | "semi": false, 4 | "trailingComma": "all", 5 | "tabWidth": 2, 6 | "printWidth": 80 7 | } 8 | -------------------------------------------------------------------------------- /CODE_OF_CONDUCT.md: -------------------------------------------------------------------------------- 1 | # Contributor Covenant Code of Conduct 2 | 3 | ## Our Pledge 4 | 5 | In the interest of fostering an open and welcoming environment, we as 6 | contributors and maintainers pledge to making participation in our project and 7 | our community a harassment-free experience for everyone, regardless of age, body 8 | size, disability, ethnicity, sex characteristics, gender identity and expression, 9 | level of experience, education, socio-economic status, nationality, personal 10 | appearance, race, religion, or sexual identity and orientation. 11 | 12 | ## Our Standards 13 | 14 | Examples of behavior that contributes to creating a positive environment 15 | include: 16 | 17 | - Using welcoming and inclusive language 18 | - Being respectful of differing viewpoints and experiences 19 | - Gracefully accepting constructive criticism 20 | - Focusing on what is best for the community 21 | - Showing empathy towards other community members 22 | 23 | Examples of unacceptable behavior by participants include: 24 | 25 | - The use of sexualized language or imagery and unwelcome sexual attention or 26 | advances 27 | - Trolling, insulting/derogatory comments, and personal or political attacks 28 | - Public or private harassment 29 | - Publishing others' private information, such as a physical or electronic 30 | address, without explicit permission 31 | - Other conduct which could reasonably be considered inappropriate in a 32 | professional setting 33 | 34 | ## Our Responsibilities 35 | 36 | Project maintainers are responsible for clarifying the standards of acceptable 37 | behavior and are expected to take appropriate and fair corrective action in 38 | response to any instances of unacceptable behavior. 39 | 40 | Project maintainers have the right and responsibility to remove, edit, or 41 | reject comments, commits, code, wiki edits, issues, and other contributions 42 | that are not aligned to this Code of Conduct, or to ban temporarily or 43 | permanently any contributor for other behaviors that they deem inappropriate, 44 | threatening, offensive, or harmful. 45 | 46 | ## Scope 47 | 48 | This Code of Conduct applies both within project spaces and in public spaces 49 | when an individual is representing the project or its community. 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IN NO EVENT 21 | SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 22 | CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR 24 | IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 25 | DEALINGS IN THE SOFTWARE. 26 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Durable Objects TypeScript Counter template 2 | 3 | 4 | ## Note: You must use [wrangler](https://developers.cloudflare.com/workers/cli-wrangler/install-update) 2.0.0 or newer to use this template. 5 | 6 | ## Please read the [Durable Object documentation](https://developers.cloudflare.com/workers/learning/using-durable-objects) before using this template. 7 | 8 | A template for kick starting a Cloudflare Workers project using: 9 | 10 | - Durable Objects 11 | - TypeScript 12 | - Jest for unit testing 13 | - Modules (ES Modules to be specific) 14 | - Rollup 15 | - Wrangler 16 | 17 | Worker code is in `src/`. The Durable Object `CounterTs` class is in `src/counter.ts`, and the eyeball script is in `index.ts`. 18 | 19 | Rollup is configured to output a bundled ES Module to `dist/index.mjs`. 20 | 21 | There's an example unit test in `src/index.test.ts`, which will run as part of `wrangler build`. To run tests on their own use `npm test`. 22 | 23 | Once you have published the worker, you can interact with it as follows: 24 | 25 | ``` 26 | bash-3.2$ curl worker.your-account-name.workers.dev/ 27 | Select a Durable Object to contact by using the `name` URL query string parameter. e.g. ?name=A 28 | bash-3.2$ curl worker.your-account-name.workers.dev/?name=A 29 | Durable Object 'A' 0 is even 30 | bash-3.2$ curl worker.your-account-name.workers.dev/increment?name=A 31 | Durable Object 'A' 1 is odd 32 | bash-3.2$ curl worker.your-account-name.workers.dev/increment?name=A 33 | Durable Object 'A' 2 is even 34 | bash-3.2$ curl worker.your-account-name.workers.dev/decrement?name=A 35 | Durable Object 'A' 1 is odd 36 | ``` 37 | -------------------------------------------------------------------------------- /jest.config.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | "roots": [ 3 | "/src" 4 | ], 5 | "testMatch": [ 6 | "**/__tests__/**/*.+(ts|tsx|js)", 7 | "**/?(*.)+(spec|test).+(ts|tsx|js)" 8 | ], 9 | "transform": { 10 | "^.+\\.(ts|tsx)$": "ts-jest" 11 | }, 12 | } 13 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "private": true, 3 | "name": "{{ project-name }}", 4 | "version": "1.0.0", 5 | "description": "A template for kick starting a Cloudflare Workers project", 6 | "module": "./dist/index.mjs", 7 | "scripts": { 8 | "build": "rollup -c", 9 | "test": "jest", 10 | "format": "prettier --write '**/*.{js,css,json,md}'" 11 | }, 12 | "author": "{{ authors }}", 13 | "license": "MIT", 14 | "devDependencies": { 15 | "@cloudflare/workers-types": "^4.20221111", 16 | "@rollup/plugin-commonjs": "^24.0.0", 17 | "@rollup/plugin-node-resolve": "^15.0.1", 18 | "@rollup/plugin-terser": "^0.3.0", 19 | "@rollup/plugin-typescript": "^11.0.0", 20 | "@types/is-odd": "^3.0.1", 21 | "@types/jest": "^29.2.5", 22 | "isomorphic-fetch": "^3.0.0", 23 | "jest": "^29.3.1", 24 | "prettier": "^2.8.3", 25 | "rollup": "^3.10.0", 26 | "rollup-plugin-copy": "^3.4.0", 27 | "ts-jest": "^29.0.5", 28 | "tslib": "^2.4.1", 29 | "typescript": "^4.9.4" 30 | }, 31 | "dependencies": { 32 | "is-even": "^1.0.0" 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /rollup.config.mjs: -------------------------------------------------------------------------------- 1 | import terser from '@rollup/plugin-terser' 2 | // plugin-node-resolve and plugin-commonjs are required for a rollup bundled project 3 | // to resolve dependencies from node_modules. See the documentation for these plugins 4 | // for more details. 5 | import { nodeResolve } from '@rollup/plugin-node-resolve' 6 | import commonjs from '@rollup/plugin-commonjs' 7 | import typescript from '@rollup/plugin-typescript' 8 | 9 | export default { 10 | strictDeprecations: true, 11 | input: 'src/index.ts', 12 | output: { 13 | exports: 'named', 14 | format: 'es', 15 | file: 'dist/index.mjs', 16 | sourcemap: true, 17 | }, 18 | plugins: [typescript(), commonjs(), nodeResolve({ browser: true }), terser()], 19 | } 20 | -------------------------------------------------------------------------------- /src/counter.ts: -------------------------------------------------------------------------------- 1 | export class CounterTs { 2 | state: DurableObjectState 3 | 4 | constructor(state: DurableObjectState, env: Env) { 5 | this.state = state; 6 | } 7 | 8 | // Handle HTTP requests from clients. 9 | async fetch(request: Request) { 10 | // Apply requested action. 11 | let url = new URL(request.url); 12 | 13 | // Durable Object storage is automatically cached in-memory, so reading the 14 | // same key every request is fast. (That said, you could also store the 15 | // value in a class member if you prefer.) 16 | let value: number = await this.state.storage?.get("value") || 0; 17 | switch (url.pathname) { 18 | case "/increment": 19 | ++value; 20 | break; 21 | case "/decrement": 22 | --value; 23 | break; 24 | case "/": 25 | // Just serve the current value. No storage calls needed! 26 | break; 27 | default: 28 | return new Response("Not found", {status: 404}); 29 | } 30 | 31 | // We don't have to worry about a concurrent request having modified the 32 | // value in storage because "input gates" will automatically protect against 33 | // unwanted concurrency. So, read-modify-write is safe. For more details, 34 | // see: https://blog.cloudflare.com/durable-objects-easy-fast-correct-choose-three/ 35 | await this.state.storage?.put("value", value); 36 | 37 | return new Response(value.toString()); 38 | } 39 | } 40 | 41 | interface Env {} 42 | -------------------------------------------------------------------------------- /src/index.test.ts: -------------------------------------------------------------------------------- 1 | import 'isomorphic-fetch' 2 | 3 | test('an example test', () => { 4 | expect(23).toBe(23) 5 | }) 6 | 7 | test('make sure test polyfills for fetch api work', () => { 8 | const url = "http://workers.cloudflare.com/" 9 | const req = new Request(url) 10 | expect(req.url).toBe(url) 11 | }) 12 | -------------------------------------------------------------------------------- /src/index.ts: -------------------------------------------------------------------------------- 1 | import isOdd from 'is-odd' 2 | 3 | // In order for the workers runtime to find the class that implements 4 | // our Durable Object namespace, we must export it from the root module. 5 | export { CounterTs } from './counter' 6 | 7 | export default { 8 | async fetch(request: Request, env: Env) { 9 | try { 10 | return await handleRequest(request, env) 11 | } catch (e) { 12 | return new Response(`${e}`) 13 | } 14 | }, 15 | } 16 | 17 | async function handleRequest(request: Request, env: Env) { 18 | let url = new URL(request.url) 19 | let name = url.searchParams.get("name") 20 | if (!name) { 21 | return new Response( 22 | "Select a Durable Object to contact by using" + 23 | " the `name` URL query string parameter. e.g. ?name=A" 24 | ) 25 | } 26 | 27 | // Every unique ID refers to an individual instance of the Counter class that 28 | // has its own state. `idFromName()` always returns the same ID when given the 29 | // same string as input (and called on the same class), but never the same 30 | // ID for two different strings (or for different classes). 31 | let id = env.COUNTER.idFromName(name) 32 | 33 | // Construct the stub for the Durable Object using the ID. A stub is a 34 | // client object used to send messages to the Durable Object. 35 | let obj = env.COUNTER.get(id) 36 | 37 | // Send a request to the Durable Object, then await its response. 38 | let resp = await obj.fetch(request.url) 39 | let count = parseInt(await resp.text()) 40 | let wasOdd = isOdd(count) ? 'is odd' : 'is even' 41 | 42 | return new Response(`Durable Object '${name}' ${count} ${wasOdd}`) 43 | } 44 | 45 | interface Env { 46 | COUNTER: DurableObjectNamespace 47 | } 48 | -------------------------------------------------------------------------------- /tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | "target": "esnext", 4 | "lib": ["esnext"], 5 | "alwaysStrict": true, 6 | "strict": true, 7 | "noEmitOnError": true, 8 | "moduleResolution": "node", 9 | "outDir": "tscOutDir", 10 | "preserveConstEnums": true, 11 | "esModuleInterop": true, 12 | "types": ["@cloudflare/workers-types", "jest"] 13 | }, 14 | "include": ["src"], 15 | "exclude": ["node_modules", "dist"] 16 | } 17 | -------------------------------------------------------------------------------- /wrangler.toml: -------------------------------------------------------------------------------- 1 | name = "worker" 2 | main = "./dist/index.mjs" 3 | compatibility_date = "2022-09-08" 4 | 5 | [build] 6 | command = "npm install && npm test && npm run build" 7 | 8 | [durable_objects] 9 | bindings = [{name = "COUNTER", class_name = "CounterTs"}] 10 | 11 | [[migrations]] 12 | tag = "v1" # Should be unique for each entry 13 | new_classes = ["CounterTs"] 14 | --------------------------------------------------------------------------------