├── .babelrc ├── .editorconfig ├── .github └── ISSUE_TEMPLATE │ ├── bug_report.md │ └── feature_request.md ├── .gitignore ├── .travis.yml ├── CONTRIBUTING.md ├── LICENSE.md ├── dist ├── datafield.min.js └── datafield.min.js.map ├── docs ├── datafield.png ├── index.html └── main.css ├── package.json ├── readme.md ├── rollup.config.js ├── src ├── datafield.js ├── errors.js ├── filter.js └── utils.js └── test ├── comparison.test.js ├── data.json ├── general.test.js ├── math.test.js ├── multiFilter.test.js ├── range.test.js └── sorting.test.js /.babelrc: -------------------------------------------------------------------------------- 1 | { 2 | "presets": [ 3 | ["env", { 4 | "modules": false 5 | }] 6 | ], 7 | "env": { 8 | "test": { 9 | "presets": [ 10 | "env" 11 | ] 12 | } 13 | } 14 | } 15 | -------------------------------------------------------------------------------- /.editorconfig: -------------------------------------------------------------------------------- 1 | root = true 2 | 3 | [*] 4 | end_of_line = lf 5 | insert_final_newline = true 6 | indent_style = space 7 | indent_size = 2 8 | 9 | [*.json] 10 | indent_size = 4 11 | -------------------------------------------------------------------------------- /.github/ISSUE_TEMPLATE/bug_report.md: -------------------------------------------------------------------------------- 1 | --- 2 | name: Bug report 3 | about: Create a report to help us improve 4 | 5 | --- 6 | 7 | **Describe the bug** 8 | A clear and concise description of what the bug is. 9 | 10 | **To Reproduce** 11 | Steps to reproduce the behavior: 12 | 13 | **Expected behavior** 14 | A clear and concise description of what you expected to happen. 15 | 16 | **Error log** 17 | If applicable 18 | 19 | **Additional context** 20 | Add any other context about the problem here. 21 | -------------------------------------------------------------------------------- /.github/ISSUE_TEMPLATE/feature_request.md: -------------------------------------------------------------------------------- 1 | --- 2 | name: Feature request 3 | about: Suggest an idea for this project 4 | 5 | --- 6 | 7 | **Is your feature request related to a problem? Please describe.** 8 | A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] 9 | 10 | **Describe the solution you'd like** 11 | A clear and concise description of what you want to happen. 12 | 13 | **Additional context** 14 | Add any other context or screenshots about the feature request here. 15 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | .idea 3 | *.log 4 | *.lock 5 | coverage -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: node_js 2 | node_js: 3 | - "v6.14.0" 4 | install: 5 | - yarn 6 | script: 7 | - yarn run test 8 | after_success: 9 | - bash <(curl -s https://codecov.io/bash) 10 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # Contributing to DataField 2 | 3 | First of all, contributing is more than welcome! 4 | 5 | When contributing to this repository, please first discuss the change you wish to make via issue, 6 | email, or any other method with the owners of this repository before making a change. 7 | 8 | 9 | ## Pull Request Process 10 | 11 | 0. Write tests for your changes 12 | 1. Ensure any install or build dependencies are removed before the end of the layer when doing a 13 | build. 14 | 2. Update the README.md and html in /docs folder with details of changes 15 | 16 | ## Code of Conduct 17 | 18 | ### Our Pledge 19 | 20 | In the interest of fostering an open and welcoming environment, we as 21 | contributors and maintainers pledge to making participation in our project and 22 | our community a harassment-free experience for everyone, regardless of age, body 23 | size, disability, ethnicity, gender identity and expression, level of experience, 24 | nationality, personal appearance, race, religion, or sexual identity and 25 | orientation. 26 | 27 | ### Our Standards 28 | 29 | Examples of behavior that contributes to creating a positive environment 30 | include: 31 | 32 | * Using welcoming and inclusive language 33 | * Being respectful of differing viewpoints and experiences 34 | * Gracefully accepting constructive criticism 35 | * Focusing on what is best for the community 36 | * Showing empathy towards other community members 37 | 38 | Examples of unacceptable behavior by participants include: 39 | 40 | * The use of sexualized language or imagery and unwelcome sexual attention or 41 | advances 42 | * Trolling, insulting/derogatory comments, and personal or political attacks 43 | * Public or private harassment 44 | * Publishing others' private information, such as a physical or electronic 45 | address, without explicit permission 46 | * Other conduct which could reasonably be considered inappropriate in a 47 | professional setting 48 | 49 | ### Our Responsibilities 50 | 51 | Project maintainers are responsible for clarifying the standards of acceptable 52 | behavior and are expected to take appropriate and fair corrective action in 53 | response to any instances of unacceptable behavior. 54 | 55 | Project maintainers have the right and responsibility to remove, edit, or 56 | reject comments, commits, code, wiki edits, issues, and other contributions 57 | that are not aligned to this Code of Conduct, or to ban temporarily or 58 | permanently any contributor for other behaviors that they deem inappropriate, 59 | threatening, offensive, or harmful. 60 | 61 | ### Scope 62 | 63 | This Code of Conduct applies both within project spaces and in public spaces 64 | when an individual is representing the project or its community. Examples of 65 | representing a project or community include using an official project e-mail 66 | address, posting via an official social media account, or acting as an appointed 67 | representative at an online or offline event. Representation of a project may be 68 | further defined and clarified by project maintainers. 69 | 70 | ### Enforcement 71 | 72 | Instances of abusive, harassing, or otherwise unacceptable behavior may be 73 | reported by contacting the project team at [INSERT EMAIL ADDRESS]. All 74 | complaints will be reviewed and investigated and will result in a response that 75 | is deemed necessary and appropriate to the circumstances. The project team is 76 | obligated to maintain confidentiality with regard to the reporter of an incident. 77 | Further details of specific enforcement policies may be posted separately. 78 | 79 | Project maintainers who do not follow or enforce the Code of Conduct in good 80 | faith may face temporary or permanent repercussions as determined by other 81 | members of the project's leadership. 82 | 83 | ### Attribution 84 | 85 | This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, 86 | available at [http://contributor-covenant.org/version/1/4][version] 87 | 88 | [homepage]: http://contributor-covenant.org 89 | [version]: http://contributor-covenant.org/version/1/4/ 90 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2018 Alex Bykov 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /dist/datafield.min.js: -------------------------------------------------------------------------------- 1 | !function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.DataField=e()}(this,function(){"use strict";function t(t,e){return t.hasOwnProperty(e)?t[e]:function(t,e,r){if(!t||"object"!=typeof t)return"function"==typeof r?r():r;if(!e)return t;var n=Object.assign({},t);e=e.split(".");for(var i=0;in}function r(e,r,n){var i=t(e,r);return Array.isArray(i)&&(i=i.length),n instanceof Date&&(i=new Date(i)),i>=n}function n(e,r,n){var i=t(e,r);return Array.isArray(i)&&(i=i.length),n instanceof Date&&(i=new Date(i)),ithis.data.length&&(t=this.data.length);var e=function t(e,r,n){void 0===n&&(n=[]);var i=Math.floor(Math.random()*e);return n.includes(i)||n.push(i),n.length===r?n:t(e,r,n)}(this.data.length,t),r=this.data.filter(function(t,r){return e.includes(r)});return new u(r,this.selector)},u.prototype.where=function(t){return this.selector=t,this},u.prototype.isTruthy=function(){var t=this;this.selector||c("NO_SEL");var e=this.data.filter(function(e){return o(e,t.selector)});return new u(e,this.selector)},u.prototype.isFalsy=function(){var t=this;this.selector||c("NO_SEL");var e=this.data.filter(function(e){return!o(e,t.selector)});return new u(e,this.selector)},u.prototype.eq=function(t){var e=this;this.selector&&void 0!==t||c("NO_SEL_OR_VAL");var r=this.data.filter(function(r){return s(r,e.selector,t)});return new u(r,this.selector)},u.prototype.not=function(t){var e=this;this.selector&&void 0!==t||c("NO_SEL_OR_VAL");var r=this.data.filter(function(r){return a(r,e.selector,t)});return new u(r,this.selector)},u.prototype.gt=function(t){var r=this;this.selector&&void 0!==t||c("NO_SEL_OR_VAL");var n=this.data.filter(function(n){return e(n,r.selector,t)});return new u(n,this.selector)},u.prototype.lt=function(t){var e=this;this.selector&&void 0!==t||c("NO_SEL_OR_VAL");var r=this.data.filter(function(r){return n(r,e.selector,t)});return new u(r,this.selector)},u.prototype.gte=function(t){var e=this;this.selector&&void 0!==t||c("NO_SEL_OR_VAL");var n=this.data.filter(function(n){return r(n,e.selector,t)});return new u(n,this.selector)},u.prototype.lte=function(t){var e=this;this.selector&&void 0!==t||c("NO_SEL_OR_VAL");var r=this.data.filter(function(r){return i(r,e.selector,t)});return new u(r,this.selector)},u.prototype.range=function(t,e){var i,s,a,o=this;Array.isArray(t)&&2===t.length&&(i=[t[0],t[1]],t=i[0],e=i[1]),typeof(s=t)==typeof(a=e)&&("object"==typeof s&&s instanceof Date&&a instanceof Date||"number"==typeof s||"string"==typeof s)||c("RANGE_ARG"),this.selector||c("NO_SEL");var h=this.data.filter(function(e){return r(e,o.selector,t)}).filter(function(t){return n(t,o.selector,e)});return new u(h,this.selector)},u.prototype.includes=function(e){var r=this;if(this.selector||c("NO_SEL"),void 0===e)return this;var n=this.data.filter(function(n){var i=t(n,r.selector);return Array.isArray(i)&&i.includes(e)});return new u(n,this.selector)},u.prototype.any=function(t){var e=this;if(void 0===t&&(t={}),"object"!=typeof t||!Object.keys(t).length)return this;var r=this.data.filter(function(r){return e.__checkForAny(r,t)});return new u(r,this.selector)},u.prototype.all=function(t){var e=this;if(void 0===t&&(t={}),"object"!=typeof t||!Object.keys(t).length)return this;var r=this.data.filter(function(r){return e.__checkForAll(r,t)});return new u(r,this.selector)},u.prototype.pick=function(t){if(!t)return this;if("string"!=typeof t&&c("NO_STR_VALUE"),"even"===(t=t.toLowerCase()))return new u(this.data.filter(function(t,e){return!(e%2)}));if("odd"===t)return new u(this.data.filter(function(t,e){return e%2}));if("n"===t.slice(-1)&&Number(t.slice(0,-1))){var e=Number(t.slice(0,-1));return new u(this.data.filter(function(t,r){return!(r%e)}))}c("BAD_PICK_ARG")},u.prototype.sort=function(t){void 0===t&&(t={});var e=t.by,r=t.order;void 0===r&&(r="asc");var n=t.type,i=this.__findFirstOccurrence(e);return e&&i?("desc"!==r&&(r="asc"),n||(n=typeof i),this.selector=e,"asc"===r?this.asc(n):this.desc(n)):this},u.prototype.asc=function(e){if(this.selector||c("NO_SEL"),!this.data.length)return this;var r=[];e=e||this.__getType();var n=this.selector;switch(e){case"n":case"num":case"number":r=this.data.slice().sort(function(e,r){return t(e,n)-t(r,n)});break;case"string":case"str":case"s":r=this.data.slice().sort(function(e,r){return String(t(e,n)).localeCompare(String(t(r,n)))});break;case"date":case"d":r=this.data.slice().sort(function(e,r){return Number(new Date(t(e,n)))-Number(new Date(t(r,n)))});break;case"array":case"arr":r=this.data.slice().sort(function(e,r){var i=t(e,n),s=t(r,n);if(Array.isArray(i)&&Array.isArray(s))return i.length-s.length});break;default:return this}return new u(r,this.selector)},u.prototype.desc=function(e){if(this.selector||c("NO_SEL"),!this.data.length)return this;var r=[];e=e||this.__getType();var n=this.selector;switch(e){case"num":case"number":r=this.data.slice().sort(function(e,r){return t(r,n)-t(e,n)});break;case"str":case"string":r=this.data.slice().sort(function(e,r){return String(t(r,n)).localeCompare(String(t(e,n)))});break;case"date":r=this.data.slice().sort(function(e,r){return Number(new Date(t(r,n)))-Number(new Date(t(e,n)))});break;case"arr":case"array":r=this.data.slice().sort(function(e,r){var i=t(e,n),s=t(r,n);if(Array.isArray(i)&&Array.isArray(s))return s.length-i.length});break;default:return this}return new u(r,this.selector)},u.prototype.sum=function(e,r){return void 0===e&&(e=c("NO_MATH_SEL")),void 0===r&&(r=!0),this.__reset(),this.data.reduce(function(n,i){var s=t(i,e);return r?"number"==typeof s?n+s:n:isNaN(s)?n:n+Number(s)},0)},u.prototype.avg=function(e,r){void 0===e&&(e=c("NO_MATH_SEL")),void 0===r&&(r=!0),this.__reset();var n=0,i=0;return this.data.forEach(function(s){var a=t(s,e);r?"number"==typeof a&&(i++,n+=a):isNaN(a)||(i++,n+=Number(a))}),i?n/i:0},u.prototype.median=function(e,r){void 0===e&&(e=c("NO_MATH_SEL")),void 0===r&&(r=!0),this.__reset();var n=[];if(this.data.forEach(function(i){var s=t(i,e);r?"number"==typeof s&&n.push(s):isNaN(s)||n.push(Number(s))}),0===n.length)return 0;if(1===n.length)return n[0];n.sort(function(t,e){return t-e});var i=Math.floor(n.length/2);return n.length%2?n[i]:(n[i-1]+n[i])/2},u.prototype.values=function(){return this.__reset(),this.data.slice(0)},u.prototype.toArray=function(){return this.values()},u.prototype.__reset=function(){this.selector=""},u.prototype.__getType=function(e){if(void 0===e&&(e=this.selector),e)for(var r=0;r value\r\n}\r\n\r\nfunction isGreaterOrEq (el, selector, value) {\r\n let propValue = findProp(el, selector)\r\n if (Array.isArray(propValue)) propValue = propValue.length\r\n if (value instanceof Date) propValue = new Date(propValue)\r\n return propValue >= value\r\n}\r\n\r\nfunction isLess (el, selector, value) {\r\n let propValue = findProp(el, selector)\r\n if (Array.isArray(propValue)) propValue = propValue.length\r\n if (value instanceof Date) propValue = new Date(propValue)\r\n return propValue < value\r\n}\r\n\r\nfunction isLessOrEq (el, selector, value) {\r\n let propValue = findProp(el, selector)\r\n if (Array.isArray(propValue)) propValue = propValue.length\r\n if (value instanceof Date) propValue = new Date(propValue)\r\n return propValue <= value\r\n}\r\n\r\nfunction isEq (el, selector, value) {\r\n let propValue = findProp(el, selector)\r\n if (Array.isArray(propValue)) propValue = propValue.length\r\n if (value instanceof Date) propValue = new Date(propValue)\r\n return value instanceof Date ? propValue.getTime() === value.getTime() : propValue === value\r\n}\r\n\r\nfunction isNotEq (el, selector, value) {\r\n let propValue = findProp(el, selector)\r\n if (Array.isArray(propValue)) propValue = propValue.length\r\n if (value instanceof Date) propValue = new Date(propValue)\r\n return value instanceof Date ? propValue.getTime() !== value.getTime() : propValue !== value\r\n}\r\n\r\nfunction isLike (el, selector) {\r\n return Boolean(findProp(el, selector))\r\n}\r\n\r\nexport { isGreater, isGreaterOrEq, isLess, isLessOrEq, isEq, isNotEq, isLike }\r\n","export default function error (code) {\n switch (code) {\n case 'NO_CONS':\n throw new Error('array should be passed into the DataField constructor')\n case 'NOT_ARRAY':\n throw new Error('DataField can only accept arrays')\n case 'RANGE_ARG':\n throw new Error('DataField range() method accepts 2 arguments of the same type')\n case 'NO_SEL':\n throw new Error('DataField selector not specified, use .where(selector)')\n case 'NO_SEL_OR_VAL':\n throw new Error('DataField selector or value not specified, use .where(selector) and check method arguments')\n case 'NO_MATH_SEL':\n throw new Error('DataField selector should be passed as an argument when using math methods')\n case 'NO_STR_VALUE':\n throw new Error('DataField selector .pick() expects a string')\n case 'BAD_PICK_ARG':\n throw new Error('DataField selector .pick() should have a proper argument value — \"even\", \"odd\" or \"{number}n\" (i.e. 3n for every third element)')\n default:\n throw new Error('DataField error')\n }\n}\n","import {\n findProp,\n randomTakes,\n checkTypes\n} from './utils'\nimport {\n isGreater,\n isLess,\n isLessOrEq,\n isGreaterOrEq,\n isEq,\n isNotEq,\n isLike\n} from './filter'\nimport error from './errors'\n\nexport default class DataField {\n constructor (array = error('NO_CONS'), selector) {\n if (!Array.isArray(array)) error('NOT_ARRAY')\n this.data = array.slice(0) // https://jsperf.com/cloning-arrays/3\n this.selector = selector\n this.caret = 0\n }\n\n exists (prop = this.selector) {\n const data = this.data.filter(el => findProp(el, prop) !== undefined)\n return new DataField(data, this.selector)\n }\n\n has (prop) {\n const data = this.data.filter(el => {\n const value = findProp(el, prop)\n return Array.isArray(value) ? value.length : value\n })\n return new DataField(data, this.selector)\n }\n\n take (number = 1) {\n const data = this.data.slice(this.caret, this.caret + number)\n this.caret += number\n return new DataField(data, this.selector)\n }\n\n get length () {\n this.__reset()\n return this.data.length\n }\n\n takeRandom (number = 1) {\n if (typeof number !== 'number') number = parseInt(String(number))\n if (isNaN(number)) number = 1\n number = Math.floor(number)\n if (number > this.data.length) number = this.data.length\n const selected = randomTakes(this.data.length, number)\n const data = this.data.filter((el, i) => selected.includes(i))\n return new DataField(data, this.selector)\n }\n\n where (selector) {\n this.selector = selector\n return this\n }\n\n isTruthy () {\n if (!this.selector) error('NO_SEL')\n const data = this.data.filter(el => isLike(el, this.selector))\n return new DataField(data, this.selector)\n }\n\n isFalsy () {\n if (!this.selector) error('NO_SEL')\n const data = this.data.filter(el => !isLike(el, this.selector))\n return new DataField(data, this.selector)\n }\n\n eq (value) {\n if (!this.selector || value === undefined) error('NO_SEL_OR_VAL')\n const data = this.data.filter((el) => isEq(el, this.selector, value))\n return new DataField(data, this.selector)\n }\n\n not (value) {\n if (!this.selector || value === undefined) error('NO_SEL_OR_VAL')\n const data = this.data.filter((el) => isNotEq(el, this.selector, value))\n return new DataField(data, this.selector)\n }\n\n gt (value) {\n if (!this.selector || value === undefined) error('NO_SEL_OR_VAL')\n const data = this.data.filter((el) => isGreater(el, this.selector, value))\n return new DataField(data, this.selector)\n }\n\n lt (value) {\n if (!this.selector || value === undefined) error('NO_SEL_OR_VAL')\n const data = this.data.filter((el) => isLess(el, this.selector, value))\n return new DataField(data, this.selector)\n }\n\n gte (value) {\n if (!this.selector || value === undefined) error('NO_SEL_OR_VAL')\n const data = this.data.filter((el) => isGreaterOrEq(el, this.selector, value))\n return new DataField(data, this.selector)\n }\n\n lte (value) {\n if (!this.selector || value === undefined) error('NO_SEL_OR_VAL')\n const data = this.data.filter((el) => isLessOrEq(el, this.selector, value))\n return new DataField(data, this.selector)\n }\n\n range (from, to) {\n if (Array.isArray(from) && from.length === 2) {\n [from, to] = [from[0], from[1]]\n }\n if (!checkTypes(from, to)) error('RANGE_ARG')\n if (!this.selector) error('NO_SEL')\n const data = this.data\n .filter((el) => isGreaterOrEq(el, this.selector, from))\n .filter((el) => isLess(el, this.selector, to))\n return new DataField(data, this.selector)\n }\n\n includes (value) {\n if (!this.selector) error('NO_SEL')\n if (value === undefined) return this\n const data = this.data.filter(el => {\n const prop = findProp(el, this.selector)\n return Array.isArray(prop) && prop.includes(value)\n })\n return new DataField(data, this.selector)\n }\n\n any (config = {}) {\n if (typeof config !== 'object' || !Object.keys(config).length) return this\n const data = this.data.filter((el) => this.__checkForAny(el, config))\n return new DataField(data, this.selector)\n }\n\n all (config = {}) {\n if (typeof config !== 'object' || !Object.keys(config).length) return this\n const data = this.data.filter((el) => this.__checkForAll(el, config))\n return new DataField(data, this.selector)\n }\n\n pick (value) {\n if (!value) return this\n if (typeof value !== 'string') error('NO_STR_VALUE')\n value = value.toLowerCase()\n if (value === 'even') return new DataField(this.data.filter((el, i) => !(i % 2)))\n if (value === 'odd') return new DataField(this.data.filter((el, i) => i % 2))\n if (value.slice(-1) === 'n' && !!Number(value.slice(0, -1))) {\n const rule = Number(value.slice(0, -1))\n return new DataField(this.data.filter((el, i) => !(i % rule)))\n }\n error('BAD_PICK_ARG')\n }\n\n sort ({ by, order = 'asc', type } = {}) {\n const prop = this.__findFirstOccurrence(by)\n if (!by || !prop) return this\n if (order !== 'desc') order = 'asc'\n if (!type) type = typeof prop\n this.selector = by\n return order === 'asc' ? this.asc(type) : this.desc(type)\n }\n\n asc (type) {\n if (!this.selector) error('NO_SEL')\n if (!this.data.length) return this\n let data = []\n type = type || this.__getType()\n const prop = this.selector\n switch (type) {\n case 'n':\n case 'num':\n case 'number':\n data = this.data.slice().sort((a, b) => findProp(a, prop) - findProp(b, prop))\n break\n case 'string':\n case 'str':\n case 's':\n data = this.data.slice().sort((a, b) => String(findProp(a, prop)).localeCompare(String(findProp(b, prop))))\n break\n case 'date':\n case 'd':\n data = this.data.slice().sort((a, b) => Number(new Date(findProp(a, prop))) - Number(new Date(findProp(b, prop))))\n break\n case 'array':\n case 'arr':\n data = this.data.slice().sort((a, b) => {\n const _a = findProp(a, prop)\n const _b = findProp(b, prop)\n if (Array.isArray(_a) && Array.isArray(_b)) {\n return _a.length - _b.length\n }\n })\n break\n default:\n return this\n }\n return new DataField(data, this.selector)\n }\n\n desc (type) {\n if (!this.selector) error('NO_SEL')\n if (!this.data.length) return this\n let data = []\n type = type || this.__getType()\n const prop = this.selector\n switch (type) {\n case 'num':\n case 'number':\n data = this.data.slice().sort((a, b) => findProp(b, prop) - findProp(a, prop))\n break\n case 'str':\n case 'string':\n data = this.data.slice().sort((a, b) => String(findProp(b, prop)).localeCompare(String(findProp(a, prop))))\n break\n case 'date':\n data = this.data.slice().sort((a, b) => Number(new Date(findProp(b, prop))) - Number(new Date(findProp(a, prop))))\n break\n case 'arr':\n case 'array':\n data = this.data.slice().sort((a, b) => {\n const _a = findProp(a, prop)\n const _b = findProp(b, prop)\n if (Array.isArray(_a) && Array.isArray(_b)) {\n return _b.length - _a.length\n }\n })\n break\n default:\n return this\n }\n return new DataField(data, this.selector)\n }\n\n sum (prop = error('NO_MATH_SEL'), strict = true) {\n this.__reset()\n return this.data.reduce((sum, el) => {\n const value = findProp(el, prop)\n if (strict) return typeof value === 'number' ? sum + value : sum\n return !isNaN(value) ? sum + Number(value) : sum\n }, 0)\n }\n\n avg (prop = error('NO_MATH_SEL'), strict = true) {\n this.__reset()\n let sum = 0\n let count = 0\n 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-------------------------------------------------------------------------------- /docs/datafield.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/alexbykoff/datafield/43fe57d3daa5118b4566d2973d0d7c33030c8d6a/docs/datafield.png -------------------------------------------------------------------------------- /docs/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | DataField — Javascript Library 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 19 | 20 |
21 | 22 | 82 |
83 |
84 |
85 |
86 |
87 |
DataField.js — v0.3.0
88 |
Select, sort, filter and perform maths and analysis on your arrays of data
89 |
Zero-dependency Javascript library for Node and browsers that works with collections 90 |
91 |
92 |
Currently in early beta — code contributions are more than welcome
93 |
94 |
95 |
Github
96 |
NPM
97 |
98 |
99 |
100 |
101 |
What is DataField
102 |

DataField is a library that helps you wrangle your awesome collections of data you obtain from different 103 | sources.

104 |

Imagine you are building a web application that deals with users. You make an API request and receive an 105 | array 106 | of 100 entries which look like this one below:

107 | 
108 |         
109 |     {
110 |       "_id": "5b420ae94fe6464ff91f5de8",
111 |       "index": 0,
112 |       "guid": "871eebf0-9983-4eb5-a0b5-59372a2fbecd",
113 |       "isActive": true,
114 |       "balance": "$1,268.06",
115 |       "age": 41,
116 |       "name": {
117 |         "first": "Pearlie",
118 |         "last": "Osborne"
119 |       },
120 |       "company": "PIVITOL",
121 |       "email": "pearlie.osborne@pivitol.net",
122 |       "phone": "+1 (992) 418-2307",
123 |       "address": "190 River Street, Spelter, Tennessee, 1088",
124 |       "registered": "Monday, April 18, 2016 7:35 AM",
125 |       "tags": ["ad", "magna", "aliqua"],
126 |       "friends": [{"id": 0, "name": "Whitney Snow"}, {"id": 1, "name": "Garza Hernandez"}, {"id": 2,"name": "Lourdes Conley"}]
127 |     }
128 |         
129 |
130 |

With this library it is rather easy to perform various actions on your data.

131 |
How It Works
132 | 
const users = new DataField(arrayOfUsers)
133 |

Now your data is stored in an instance of DataField class.

134 |

Each method that does any kind of selection or filtering returns a new instance of DataField and 135 | can be chained.

136 |

Math methods return primitives and can not be chained

137 |

To extract your data use .values() or .toArray() 138 |

139 |

Now lets filter our data. We need users who are 30 years old or older, but not 41 years old and have at least 140 | 2 141 | friends, but less than 142 | 10. Also we want our list sorted by last name in descending order. After that we are done so we want an array 143 | out of 144 | that:

145 | 
users.where('age').gte(30).not(41).where('friends').range(2, 10).sort({by: 'name.last', order: 'desc'}).toArray()
146 |

Or you can go more object-oriented way (this one below is kinda weird request although):

147 | 

148 | users.where('age').any({
149 |   range: [8, 88],
150 |   lte: 18,
151 |   gt: 60,
152 |   not: 42,
153 |   is: false
154 | })
155 |   .toArray()
156 |

That's it. API is short and simple. Look to the left – there is a list of methods.

157 |
Open console in your browser. There is a variable users there you can play with — it is 158 | a DataField instance with 100 entries in it. 159 |
160 |
161 |
162 |
163 |
164 |
Installation
165 |
166 |
167 | npm: 168 |
npm i datafield
169 |
170 | cdn: 171 |
https://unpkg.com/datafield@latest
172 |
173 |
174 | 175 |
176 |
177 |
API
178 |
Basic Operations. Filtering
179 | 180 | 181 |
182 |
183 |
.where(string)
184 |

Basic property selector. All subsequent operations will be based on this selector. 185 | If no selector present an error will be thrown

186 | 
187 |               
188 | users.where('age').eq(30)
189 |               
190 |
191 |

Nested properties can be selected using dot notation within a string

192 | 
193 |               
194 | users.where('name.last').gte('B')
195 |               
196 |
197 |

If you need to filter your data based on multiple properties you can chain them

198 | 
199 |               
200 | users
201 |     .where('age').gte(18)
202 |     .where('isActive').isTruthy()
203 |     .where('friends').range(2,20)
204 |               
205 |
206 |
207 |
208 |
209 | 210 | 211 |
212 |
213 |
.values()
214 |

Unwraps DataField instance into an array. toArray() does the same job. 215 |

216 | 
217 |               users.toArray().map(user => user.age)
218 |
219 |
220 |
221 |
222 |
223 |
224 |
toArray()
225 | Another syntax for values() 226 |
227 |
228 |
229 | 230 | 231 |
232 |
233 |
exists([property])
234 |

Selects entries where property exists. If no property value is passed then library tries 235 | to use the last selector

236 | 
237 |               
238 | // this is okay:
239 | users.where('email').exists()
240 | // this is okay too:
241 | users.exists('email')
242 | // this will throw an error:
243 | users.exists()
244 |               
245 |
246 |
247 |
248 |
249 |
250 |
251 |
has(property)
252 |

Selects entries where property exists and has truthy value.

253 | 
254 |               
255 | users.has('email').where('age').gte(18).median()
256 | // selects users who have their email added to the profile, 18 years or older and return the age median of such users
257 |               
258 |
259 |
260 |
261 |
262 | 263 | 264 |
265 |
266 |
take([number])
267 |

Returns Number entries from DataField object, starting from the first one. 268 | If value is not provided then returns one entry. If value is greater than amount of entries left - returns 269 | the rest of them

270 | 
271 |               
272 | users.where('age').asc().take(10)
273 |               
274 |
275 |
276 | Important! History of take() is stored in an instance the method was called 277 | on. Consider the following: 278 |
279 | 
280 |               
281 | const users = new DataField(data)  // 12 entries in an array
282 | firstFive = users.take(5) // indices 0 - 4
283 | SecondFive = users.take(5) // indices 5 - 9
284 | restOfUsers = users.take(5) // indices 9 - end of array
285 |               
286 |
287 |
288 |
289 |
290 | 291 | 292 |
293 |
294 |
takeRandom([Number])
295 |

Returns Number random entries from DataField object. 296 | If value is not provided then returns one entry. Unlike take() method does 297 | not track its own history

298 | 
299 |               
300 | users.takeRandom() // returns one random entry
301 |               
302 |
303 |
304 |
305 |
306 | 307 | 308 |
309 |
310 |
pick([String])
311 |

Returns entries from DataField object based filtered by arguments. 312 | If value is not provided then returns unchanged data set

313 |

Possible values — "even", "odd" or "{number}n" (i.e. "3n") — return new DataField of every other, every 314 | odd or every 3rd item respectively

315 | 
316 |               
317 | users.pick("5n") // returns every 5th item in the data set
318 |               
319 |
320 |
321 |
322 |
323 | 324 | 325 |
326 |
327 |
length
328 |

Getter. Returns the number of entries

329 | 
330 |               
331 | users.length // 100
332 |               
333 |
334 |
335 |
336 |
337 | 338 |
Comparison
339 | 340 | 341 |
342 |
343 |
eq(value)
344 |
not(value)
345 |
gt(value)
346 |
gte(value)
347 |
lt(value)
348 |
lte(value)
349 |

Selects entries by condition. Currently supports Number, String, Date 350 | values

351 | 
352 |               
353 | users
354 |     .where('age').eq(42)
355 |     .where('registered').gte(new Date("Jan 1 2017")).lte(new Date("Dec 31 2018"))
356 |     .where('company').not('COMVOY')
357 |               
358 |
359 |
360 |
361 |
362 | 363 | 364 |
365 |
366 |
isTruthy()
367 |

Selects entries with truthy selector value (one that evaluates to true 368 | in Javascript)

369 | 
370 |               
371 | users.where('isActive').isTruthy()
372 |               
373 |
374 |
375 |
376 |
377 | 378 | 379 |
380 |
381 |
isFalsy()
382 |

Selects entries with falsy selector value (one that evaluates to false 383 | in Javascript)

384 | 
385 |               
386 | users.where('isActive').isFalsy()
387 |               
388 |
389 |
390 |
391 |
392 | 393 | 394 |
395 |
396 |
includes(value)
397 |

Selects entries which array selectors include value Works similar to ES7 includes

399 | 
400 |               
401 | users.where('tags').includes('nostrud')
402 |               
403 |
404 |
405 |
406 |
407 | 408 | 409 |
410 |
411 |
range(from, to)
412 |

Selects entries with selector's value within the given range.

413 |

Currently supports Number, String, Date, Array.length

414 | 
415 |               
416 | const from = new Date("Feb 23 2014")
417 | const to = new Date("May 12 2017")
418 | users.where('registered').range(from, to)
419 |               
420 |
421 |
422 |
423 |
424 | 425 |
Complex filtering
426 | 427 | 428 |
429 |
430 |
all(config)
431 |
any(config)
432 |

Selects entries based on configuration object.

433 |

.all() is an AND logic — entry must 434 | satisfy 435 | all conditions

436 |

.any() is an OR-like filter — entry must 437 | satisfy at least one condition

438 |

possible properties: gt, gte, lt, lte, eq, not, range, is

439 |
440 |
is
441 | is a boolean condition same as isTruthy / isFalsy methods 443 |
444 |
445 |
range
446 | value should be an array of with the length of 2 — 447 |
[from, to]
448 |
449 | 
450 |               
451 | users.where('age').all({
452 |   range: [16, 33],
453 |   not: 27
454 | })
455 | 
456 | users.where('age').any({
457 |   is: false,
458 |   eq: 42
459 | })
460 |
461 |
462 |
463 |
464 | 465 |
Sorting
466 | 467 | 468 |
469 |
470 |
sort(config)
471 |

Sorts entries based on config options

472 |

Config:

473 | 
474 |               
475 | {
476 |   by: 'property', // <-- selector. MANDATORY
477 |   order: 'asc' / 'desc' // <-- sorting order. OPTIONAL
478 |   type: 'num' / 'str' / 'date' // type of value. OPTIONAL
479 | }
480 |               
481 |
482 |

If type is not provided library will try to guess it. If you want to sort by date make sure to 483 | explicitly add that to the config, otherwise it will be treated as a string

484 | 
485 |               
486 | users.where('age').gte(18).sort({by: "name.last", order: "desc"})
487 |               
488 |
489 |
490 |
491 |
492 | 493 | 494 |
495 |
496 |
asc()
497 |
desc()
498 |

Sorts by selector in ascending / descending order

499 | 
500 |               
501 | users.where('company').asc()
502 | // or
503 | users.where('age').desc()
504 |               
505 |
506 |
507 |
508 |
509 | 510 |
Math operations
511 | 512 | 513 |
514 |
515 |
sum(property, [strict])
516 |
avg(property, [strict])
517 |
median(property, [strict])
518 |

Returns a result of mathematical operation on. Ignored if selector is not of type Number. If strict parameter is set to false attempts to coerce types

521 | 
522 |               
523 | users.where('isActive').isTruthy().sum('age') // 2083
524 | users.where('isActive').isTruthy().sum('age', false) // 2107 – converted string to a number
525 |               
526 |
527 |
528 |
529 |
530 | 531 | 532 |
533 | 534 |
535 |
536 |
537 | 538 | 542 | 543 | 544 | -------------------------------------------------------------------------------- /docs/main.css: -------------------------------------------------------------------------------- 1 | * { 2 | box-sizing: border-box; 3 | } 4 | 5 | html, body { 6 | margin: 0; 7 | padding: 0; 8 | font-family: 'Source Sans Pro', sans-serif; 9 | font-weight: 400; 10 | font-size: 16px; 11 | } 12 | 13 | .menu { 14 | width: 16rem; 15 | position: fixed; 16 | top: 0; 17 | bottom: 0; 18 | background-color: #ffebd4; 19 | overflow-x: hidden; 20 | overflow-y: auto; 21 | height: 100vh; 22 | } 23 | 24 | .main { 25 | margin-left: 16rem; 26 | padding-left: 1rem; 27 | 28 | } 29 | 30 | h1 { 31 | font-weight: inherit; 32 | } 33 | 34 | .hidden { 35 | display: none; 36 | } 37 | 38 | .menu ul { 39 | list-style-type: none; 40 | padding-left: .5rem; 41 | } 42 | 43 | .menu > ul { 44 | padding-left: 1rem; 45 | } 46 | 47 | .menu li { 48 | padding: .125rem .25rem; 49 | } 50 | 51 | .menu a { 52 | text-decoration-line: none; 53 | display: inline-block; 54 | } 55 | 56 | .menu a:hover { 57 | color: orangered; 58 | border-bottom: 1px solid forestgreen; 59 | } 60 | 61 | .first-level { 62 | color: #100c5f; 63 | border-bottom: 1px dashed #100c5f; 64 | font-weight: bolder; 65 | font-size: 1.25rem; 66 | } 67 | 68 | .second-level { 69 | color: #100c5f; 70 | border-bottom: 1px dashed #100c5f; 71 | font-weight: bolder; 72 | } 73 | 74 | .section li a { 75 | color: #100c5f; 76 | border-bottom: 1px dashed #100c5f; 77 | font-weight: normal; 78 | } 79 | 80 | .menu .section { 81 | padding-bottom: .5rem; 82 | } 83 | 84 | .menu h2 { 85 | font-family: "Arial Black", Arial, sans-serif; 86 | color: #777; 87 | font-weight: bold; 88 | padding-left: 1rem; 89 | } 90 | 91 | .main pre { 92 | padding: 0 !important; 93 | margin: 0 !important; 94 | line-height: 0; 95 | } 96 | 97 | .main pre code, .main pre code span { 98 | font-size: 14px !important; 99 | line-height: 1.25; 100 | } 101 | 102 | .logo { 103 | margin: 0 auto; 104 | } 105 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "datafield", 3 | "keywords": [ 4 | "arrays", 5 | "collections", 6 | "data", 7 | "sorting", 8 | "filtering", 9 | "database" 10 | ], 11 | "homepage": "https://tomkallen.github.io/datafield/", 12 | "repository": { 13 | "type": "git", 14 | "url": "https://github.com/tomkallen/datafield.git" 15 | }, 16 | "bugs": { 17 | "url": "https://github.com/tomkallen/datafield/issues", 18 | "email": "comradebykoff@gmail.com" 19 | }, 20 | "version": "0.3.0", 21 | "description": "Sort, select, filter, evaluate and perform maths on your arrays of data", 22 | "main": "./dist/datafield.min.js", 23 | "module": "./src/datafield.js", 24 | "scripts": { 25 | "test": "npm run lint && jest && codecov", 26 | "build": "npm run clean && rollup --config", 27 | "clean": "rimraf dist", 28 | "lint": "standard src/*.js --fix --verbose | snazzy" 29 | }, 30 | "husky": { 31 | "hooks": { 32 | "pre-commit": "npm run test && npm run build && git add ." 33 | } 34 | }, 35 | "jest": { 36 | "coverageDirectory": "./coverage/", 37 | "collectCoverage": true, 38 | "collectCoverageFrom": [ 39 | "src/**/*.js", 40 | "!**/node_modules/**", 41 | "!**/test/**" 42 | ] 43 | }, 44 | "standard": { 45 | "parser": "babel-eslint" 46 | }, 47 | "author": "Alex Bykov", 48 | "license": "MIT", 49 | "devDependencies": { 50 | "babel-cli": "6.26.0", 51 | "babel-eslint": "10.0.1", 52 | "babel-preset-env": "1.7.0", 53 | "babel-preset-flow": "6.23.0", 54 | "codecov": "3.1.0", 55 | "husky": "1.1.4", 56 | "jest": "23.6.0", 57 | "rimraf": "2.6.2", 58 | "rollup": "0.67.1", 59 | "rollup-plugin-buble": "0.19.4", 60 | "rollup-plugin-commonjs": "9.2.0", 61 | "rollup-plugin-node-resolve": "3.4.0", 62 | "rollup-plugin-terser": "3.0.0", 63 | "snazzy": "8.0.0", 64 | "standard": "12.0.1" 65 | } 66 | } 67 | -------------------------------------------------------------------------------- /readme.md: -------------------------------------------------------------------------------- 1 |

2 | 3 |

4 | 5 |

Sort, select, filter and perform maths and analysis on your arrays of data

6 |

:bear: version 0.3.0 is out

7 | 8 | [![codecov](https://codecov.io/gh/tomkallen/datafield/branch/master/graph/badge.svg)](https://codecov.io/gh/tomkallen/datafield) 9 | [![Build Status](https://travis-ci.org/tomkallen/datafield.svg?branch=master)](https://travis-ci.org/tomkallen/datafield) 10 | [![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com) 11 | [![npm version](https://badge.fury.io/js/datafield.svg)](https://badge.fury.io/js/datafield) 12 | [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT) 13 | 14 | 15 | [:page_facing_up: Read the documentation here](https://tomkallen.github.io/datafield/) 16 | [:cat: Contribute for the greater good](https://github.com/tomkallen/datafield/blob/master/CONTRIBUTING.md) 17 | 18 | ## What is DataField 19 | 20 | DataField is a library that helps you wrangle your awesome collections of data you obtain from different sources. 21 | 22 | Imagine you are building a web application that deals with users. You make an API request and receive an array of 100 entries which look like this one below: 23 | 24 | { 25 | "_id": "5b420ae94fe6464ff91f5de8", 26 | "index": 0, 27 | "guid": "871eebf0-9983-4eb5-a0b5-59372a2fbecd", 28 | "isActive": true, 29 | "balance": "$1,268.06", 30 | "age": 41, 31 | "name": { 32 | "first": "Pearlie", 33 | "last": "Osborne" 34 | }, 35 | "company": "PIVITOL", 36 | "email": "pearlie.osborne@pivitol.net", 37 | "phone": "+1 (992) 418-2307", 38 | "address": "190 River Street, Spelter, Tennessee, 1088", 39 | "registered": "Monday, April 18, 2016 7:35 AM", 40 | "tags": ["ad", "magna", "aliqua"], 41 | "friends": [{"id": 0, "name": "Whitney Snow"}, {"id": 1, "name": "Garza Hernandez"}, {"id": 2,"name": "Lourdes Conley"}] 42 | } 43 | 44 | 45 | With this library it is rather easy to perform various actions on your data. 46 | 47 | #### How It Works 48 | 49 | const users = new DataField(arrayOfUsers) 50 | 51 | Now your data is stored in an instance of DataField class. 52 | 53 | Each method that performs any kind of selection or filtering returns a **new instance** of DataField and can be chained. 54 | 55 | Math methods return primitives and can not be chained 56 | 57 | To extract your data use `.values()` or `toArray()` 58 | 59 | 60 | Lets filter our data. We need users who are 30 years old or older, but not 41 years old and have at least 2 friends, but less than 10. Also we want our list sorted by last name in descending order. Then we are done so we want an array out of that: 61 | 62 | users.where('age').gte(30).not(41).where('friends').range(2, 10).sort({by: 'name.last', order: 'desc'}).toArray() 63 | 64 | Or you can go more *object-oriented* way (this one below is kinda weird request although): 65 | 66 | ```js 67 | users.where('age').any({ 68 | range: [8, 88], 69 | lte: 18, 70 | gt: 60, 71 | not: 42, 72 | is: false 73 | }) 74 | ``` 75 | 76 | 77 | That's it. API is short and simple. 78 | Also, read the [Documentation](https://tomkallen.github.io/datafield/) 79 | 80 | `npm i datafield` 81 | -------------------------------------------------------------------------------- /rollup.config.js: -------------------------------------------------------------------------------- 1 | import resolve from 'rollup-plugin-node-resolve' 2 | import commonjs from 'rollup-plugin-commonjs' 3 | import buble from 'rollup-plugin-buble' 4 | import pkg from './package.json' 5 | import { terser } from 'rollup-plugin-terser' 6 | 7 | export default [{ 8 | input: 'src/datafield.js', 9 | output: { 10 | file: pkg.main, 11 | name: 'DataField', 12 | sourcemap: true, 13 | format: 'umd' 14 | }, 15 | plugins: [ 16 | resolve(), 17 | commonjs(), 18 | terser(), 19 | buble({transforms: { dangerousForOf: true }}) 20 | ] 21 | }] 22 | -------------------------------------------------------------------------------- /src/datafield.js: -------------------------------------------------------------------------------- 1 | import { 2 | findProp, 3 | randomTakes, 4 | checkTypes 5 | } from './utils' 6 | import { 7 | isGreater, 8 | isLess, 9 | isLessOrEq, 10 | isGreaterOrEq, 11 | isEq, 12 | isNotEq, 13 | isLike 14 | } from './filter' 15 | import error from './errors' 16 | 17 | export default class DataField { 18 | constructor (array = error('NO_CONS'), selector) { 19 | if (!Array.isArray(array)) error('NOT_ARRAY') 20 | this.data = array.slice(0) // https://jsperf.com/cloning-arrays/3 21 | this.selector = selector 22 | this.caret = 0 23 | } 24 | 25 | exists (prop = this.selector) { 26 | const data = this.data.filter(el => findProp(el, prop) !== undefined) 27 | return new DataField(data, this.selector) 28 | } 29 | 30 | has (prop) { 31 | const data = this.data.filter(el => { 32 | const value = findProp(el, prop) 33 | return Array.isArray(value) ? value.length : value 34 | }) 35 | return new DataField(data, this.selector) 36 | } 37 | 38 | take (number = 1) { 39 | const data = this.data.slice(this.caret, this.caret + number) 40 | this.caret += number 41 | return new DataField(data, this.selector) 42 | } 43 | 44 | get length () { 45 | this.__reset() 46 | return this.data.length 47 | } 48 | 49 | takeRandom (number = 1) { 50 | if (typeof number !== 'number') number = parseInt(String(number)) 51 | if (isNaN(number)) number = 1 52 | number = Math.floor(number) 53 | if (number > this.data.length) number = this.data.length 54 | const selected = randomTakes(this.data.length, number) 55 | const data = this.data.filter((el, i) => selected.includes(i)) 56 | return new DataField(data, this.selector) 57 | } 58 | 59 | where (selector) { 60 | this.selector = selector 61 | return this 62 | } 63 | 64 | isTruthy () { 65 | if (!this.selector) error('NO_SEL') 66 | const data = this.data.filter(el => isLike(el, this.selector)) 67 | return new DataField(data, this.selector) 68 | } 69 | 70 | isFalsy () { 71 | if (!this.selector) error('NO_SEL') 72 | const data = this.data.filter(el => !isLike(el, this.selector)) 73 | return new DataField(data, this.selector) 74 | } 75 | 76 | eq (value) { 77 | if (!this.selector || value === undefined) error('NO_SEL_OR_VAL') 78 | const data = this.data.filter((el) => isEq(el, this.selector, value)) 79 | return new DataField(data, this.selector) 80 | } 81 | 82 | not (value) { 83 | if (!this.selector || value === undefined) error('NO_SEL_OR_VAL') 84 | const data = this.data.filter((el) => isNotEq(el, this.selector, value)) 85 | return new DataField(data, this.selector) 86 | } 87 | 88 | gt (value) { 89 | if (!this.selector || value === undefined) error('NO_SEL_OR_VAL') 90 | const data = this.data.filter((el) => isGreater(el, this.selector, value)) 91 | return new DataField(data, this.selector) 92 | } 93 | 94 | lt (value) { 95 | if (!this.selector || value === undefined) error('NO_SEL_OR_VAL') 96 | const data = this.data.filter((el) => isLess(el, this.selector, value)) 97 | return new DataField(data, this.selector) 98 | } 99 | 100 | gte (value) { 101 | if (!this.selector || value === undefined) error('NO_SEL_OR_VAL') 102 | const data = this.data.filter((el) => isGreaterOrEq(el, this.selector, value)) 103 | return new DataField(data, this.selector) 104 | } 105 | 106 | lte (value) { 107 | if (!this.selector || value === undefined) error('NO_SEL_OR_VAL') 108 | const data = this.data.filter((el) => isLessOrEq(el, this.selector, value)) 109 | return new DataField(data, this.selector) 110 | } 111 | 112 | range (from, to) { 113 | if (Array.isArray(from) && from.length === 2) { 114 | [from, to] = [from[0], from[1]] 115 | } 116 | if (!checkTypes(from, to)) error('RANGE_ARG') 117 | if (!this.selector) error('NO_SEL') 118 | const data = this.data 119 | .filter((el) => isGreaterOrEq(el, this.selector, from)) 120 | .filter((el) => isLess(el, this.selector, to)) 121 | return new DataField(data, this.selector) 122 | } 123 | 124 | includes (value) { 125 | if (!this.selector) error('NO_SEL') 126 | if (value === undefined) return this 127 | const data = this.data.filter(el => { 128 | const prop = findProp(el, this.selector) 129 | return Array.isArray(prop) && prop.includes(value) 130 | }) 131 | return new DataField(data, this.selector) 132 | } 133 | 134 | any (config = {}) { 135 | if (typeof config !== 'object' || !Object.keys(config).length) return this 136 | const data = this.data.filter((el) => this.__checkForAny(el, config)) 137 | return new DataField(data, this.selector) 138 | } 139 | 140 | all (config = {}) { 141 | if (typeof config !== 'object' || !Object.keys(config).length) return this 142 | const data = this.data.filter((el) => this.__checkForAll(el, config)) 143 | return new DataField(data, this.selector) 144 | } 145 | 146 | pick (value) { 147 | if (!value) return this 148 | if (typeof value !== 'string') error('NO_STR_VALUE') 149 | value = value.toLowerCase() 150 | if (value === 'even') return new DataField(this.data.filter((el, i) => !(i % 2))) 151 | if (value === 'odd') return new DataField(this.data.filter((el, i) => i % 2)) 152 | if (value.slice(-1) === 'n' && !!Number(value.slice(0, -1))) { 153 | const rule = Number(value.slice(0, -1)) 154 | return new DataField(this.data.filter((el, i) => !(i % rule))) 155 | } 156 | error('BAD_PICK_ARG') 157 | } 158 | 159 | sort ({ by, order = 'asc', type } = {}) { 160 | const prop = this.__findFirstOccurrence(by) 161 | if (!by || !prop) return this 162 | if (order !== 'desc') order = 'asc' 163 | if (!type) type = typeof prop 164 | this.selector = by 165 | return order === 'asc' ? this.asc(type) : this.desc(type) 166 | } 167 | 168 | asc (type) { 169 | if (!this.selector) error('NO_SEL') 170 | if (!this.data.length) return this 171 | let data = [] 172 | type = type || this.__getType() 173 | const prop = this.selector 174 | switch (type) { 175 | case 'n': 176 | case 'num': 177 | case 'number': 178 | data = this.data.slice().sort((a, b) => findProp(a, prop) - findProp(b, prop)) 179 | break 180 | case 'string': 181 | case 'str': 182 | case 's': 183 | data = this.data.slice().sort((a, b) => String(findProp(a, prop)).localeCompare(String(findProp(b, prop)))) 184 | break 185 | case 'date': 186 | case 'd': 187 | data = this.data.slice().sort((a, b) => Number(new Date(findProp(a, prop))) - Number(new Date(findProp(b, prop)))) 188 | break 189 | case 'array': 190 | case 'arr': 191 | data = this.data.slice().sort((a, b) => { 192 | const _a = findProp(a, prop) 193 | const _b = findProp(b, prop) 194 | if (Array.isArray(_a) && Array.isArray(_b)) { 195 | return _a.length - _b.length 196 | } 197 | }) 198 | break 199 | default: 200 | return this 201 | } 202 | return new DataField(data, this.selector) 203 | } 204 | 205 | desc (type) { 206 | if (!this.selector) error('NO_SEL') 207 | if (!this.data.length) return this 208 | let data = [] 209 | type = type || this.__getType() 210 | const prop = this.selector 211 | switch (type) { 212 | case 'num': 213 | case 'number': 214 | data = this.data.slice().sort((a, b) => findProp(b, prop) - findProp(a, prop)) 215 | break 216 | case 'str': 217 | case 'string': 218 | data = this.data.slice().sort((a, b) => String(findProp(b, prop)).localeCompare(String(findProp(a, prop)))) 219 | break 220 | case 'date': 221 | data = this.data.slice().sort((a, b) => Number(new Date(findProp(b, prop))) - Number(new Date(findProp(a, prop)))) 222 | break 223 | case 'arr': 224 | case 'array': 225 | data = this.data.slice().sort((a, b) => { 226 | const _a = findProp(a, prop) 227 | const _b = findProp(b, prop) 228 | if (Array.isArray(_a) && Array.isArray(_b)) { 229 | return _b.length - _a.length 230 | } 231 | }) 232 | break 233 | default: 234 | return this 235 | } 236 | return new DataField(data, this.selector) 237 | } 238 | 239 | sum (prop = error('NO_MATH_SEL'), strict = true) { 240 | this.__reset() 241 | return this.data.reduce((sum, el) => { 242 | const value = findProp(el, prop) 243 | if (strict) return typeof value === 'number' ? sum + value : sum 244 | return !isNaN(value) ? sum + Number(value) : sum 245 | }, 0) 246 | } 247 | 248 | avg (prop = error('NO_MATH_SEL'), strict = true) { 249 | this.__reset() 250 | let sum = 0 251 | let count = 0 252 | this.data.forEach(el => { 253 | const value = findProp(el, prop) 254 | if (strict) { 255 | if (typeof value === 'number') { 256 | count++ 257 | sum += value 258 | } 259 | } else { 260 | if (!isNaN(value)) { 261 | count++ 262 | sum += Number(value) 263 | } 264 | } 265 | }) 266 | return count ? sum / count : 0 267 | } 268 | 269 | median (prop = error('NO_MATH_SEL'), strict = true) { 270 | this.__reset() 271 | const values = [] 272 | this.data.forEach(el => { 273 | const value = findProp(el, prop) 274 | if (strict) { 275 | if (typeof value === 'number') { 276 | values.push(value) 277 | } 278 | } else { 279 | if (!isNaN(value)) { 280 | values.push(Number(value)) 281 | } 282 | } 283 | }) 284 | 285 | if (values.length === 0) { 286 | return 0 287 | } else if (values.length === 1) { 288 | return values[0] 289 | } 290 | 291 | values.sort((a, b) => a - b) 292 | const medianItem = Math.floor(values.length / 2) 293 | return values.length % 2 ? values[medianItem] : (values[medianItem - 1] + values[medianItem]) / 2 294 | } 295 | 296 | values () { 297 | this.__reset() 298 | return this.data.slice(0) // https://jsperf.com/cloning-arrays/3 299 | } 300 | 301 | toArray () { 302 | return this.values() 303 | } 304 | 305 | __reset () { 306 | this.selector = '' 307 | } 308 | 309 | __getType (selector = this.selector) { 310 | if (!selector) return 311 | for (let i = 0; i < this.data.length; i++) { 312 | const prop = findProp(this.data[i], selector) 313 | if (prop) { 314 | if (Array.isArray(prop)) return 'array' 315 | return typeof prop 316 | } 317 | } 318 | } 319 | 320 | __findFirstOccurrence (selector) { 321 | if (!selector) return 322 | for (let i = 0; i < this.data.length; i++) { 323 | const prop = findProp(this.data[i], selector) 324 | if (prop) { 325 | return prop 326 | } 327 | } 328 | } 329 | 330 | __checkForAny (el, config) { 331 | const props = Object.keys(config) 332 | for (let prop of props) { 333 | switch (prop) { 334 | case 'gt': 335 | if (isGreater(el, this.selector, config[prop])) return true 336 | break 337 | case 'gte': 338 | if (isGreaterOrEq(el, this.selector, config[prop])) return true 339 | break 340 | case 'lt': 341 | if (isLess(el, this.selector, config[prop])) return true 342 | break 343 | case 'lte': 344 | if (isLessOrEq(el, this.selector, config[prop])) return true 345 | break 346 | case 'eq': 347 | if (isEq(el, this.selector, config[prop])) return true 348 | break 349 | case 'not': 350 | if (isNotEq(el, this.selector, config[prop])) return true 351 | break 352 | case 'is': 353 | if (config[prop] === isLike(el, this.selector)) return true 354 | break 355 | case 'range': 356 | if ( 357 | Array.isArray(config[prop]) && config[prop].length === 2 && 358 | isGreaterOrEq(el, this.selector, config[prop][0]) && 359 | isLess(el, this.selector, config[prop][1])) return true 360 | break 361 | default: 362 | } 363 | } 364 | } 365 | 366 | __checkForAll (el, config) { 367 | const props = Object.keys(config) 368 | for (let prop of props) { 369 | switch (prop) { 370 | case 'gt': 371 | if (!isGreater(el, this.selector, config[prop])) return 372 | break 373 | case 'gte': 374 | if (!isGreaterOrEq(el, this.selector, config[prop])) return 375 | break 376 | case 'lt': 377 | if (!isLess(el, this.selector, config[prop])) return 378 | break 379 | case 'lte': 380 | if (!isLessOrEq(el, this.selector, config[prop])) return 381 | break 382 | case 'eq': 383 | if (!isEq(el, this.selector, config[prop])) return 384 | break 385 | case 'not': 386 | if (!isNotEq(el, this.selector, config[prop])) return 387 | break 388 | case 'is': 389 | if (config[prop] !== isLike(el, this.selector)) return 390 | break 391 | case 'range': 392 | if ( 393 | Array.isArray(config[prop]) && config[prop].length === 2 && 394 | !(isGreaterOrEq(el, this.selector, config[prop][0]) && 395 | isLess(el, this.selector, config[prop][1]))) return 396 | break 397 | default: 398 | } 399 | } 400 | return true 401 | } 402 | } 403 | -------------------------------------------------------------------------------- /src/errors.js: -------------------------------------------------------------------------------- 1 | export default function error (code) { 2 | switch (code) { 3 | case 'NO_CONS': 4 | throw new Error('array should be passed into the DataField constructor') 5 | case 'NOT_ARRAY': 6 | throw new Error('DataField can only accept arrays') 7 | case 'RANGE_ARG': 8 | throw new Error('DataField range() method accepts 2 arguments of the same type') 9 | case 'NO_SEL': 10 | throw new Error('DataField selector not specified, use .where(selector)') 11 | case 'NO_SEL_OR_VAL': 12 | throw new Error('DataField selector or value not specified, use .where(selector) and check method arguments') 13 | case 'NO_MATH_SEL': 14 | throw new Error('DataField selector should be passed as an argument when using math methods') 15 | case 'NO_STR_VALUE': 16 | throw new Error('DataField selector .pick() expects a string') 17 | case 'BAD_PICK_ARG': 18 | throw new Error('DataField selector .pick() should have a proper argument value — "even", "odd" or "{number}n" (i.e. 3n for every third element)') 19 | default: 20 | throw new Error('DataField error') 21 | } 22 | } 23 | -------------------------------------------------------------------------------- /src/filter.js: -------------------------------------------------------------------------------- 1 | import { findProp } from './utils' 2 | 3 | function isGreater (el, selector, value) { 4 | let propValue = findProp(el, selector) 5 | if (Array.isArray(propValue)) propValue = propValue.length 6 | if (value instanceof Date) propValue = new Date(propValue) 7 | return propValue > value 8 | } 9 | 10 | function isGreaterOrEq (el, selector, value) { 11 | let propValue = findProp(el, selector) 12 | if (Array.isArray(propValue)) propValue = propValue.length 13 | if (value instanceof Date) propValue = new Date(propValue) 14 | return propValue >= value 15 | } 16 | 17 | function isLess (el, selector, value) { 18 | let propValue = findProp(el, selector) 19 | if (Array.isArray(propValue)) propValue = propValue.length 20 | if (value instanceof Date) propValue = new Date(propValue) 21 | return propValue < value 22 | } 23 | 24 | function isLessOrEq (el, selector, value) { 25 | let propValue = findProp(el, selector) 26 | if (Array.isArray(propValue)) propValue = propValue.length 27 | if (value instanceof Date) propValue = new Date(propValue) 28 | return propValue <= value 29 | } 30 | 31 | function isEq (el, selector, value) { 32 | let propValue = findProp(el, selector) 33 | if (Array.isArray(propValue)) propValue = propValue.length 34 | if (value instanceof Date) propValue = new Date(propValue) 35 | return value instanceof Date ? propValue.getTime() === value.getTime() : propValue === value 36 | } 37 | 38 | function isNotEq (el, selector, value) { 39 | let propValue = findProp(el, selector) 40 | if (Array.isArray(propValue)) propValue = propValue.length 41 | if (value instanceof Date) propValue = new Date(propValue) 42 | return value instanceof Date ? propValue.getTime() !== value.getTime() : propValue !== value 43 | } 44 | 45 | function isLike (el, selector) { 46 | return Boolean(findProp(el, selector)) 47 | } 48 | 49 | export { isGreater, isGreaterOrEq, isLess, isLessOrEq, isEq, isNotEq, isLike } 50 | -------------------------------------------------------------------------------- /src/utils.js: -------------------------------------------------------------------------------- 1 | export function findProp (el, prop) { 2 | if (el.hasOwnProperty(prop)) return el[prop] 3 | return traverseKeys(el, prop) 4 | } 5 | 6 | export function randomTakes (len, num, collection = []) { 7 | const index = Math.floor(Math.random() * len) 8 | if (!collection.includes(index)) collection.push(index) 9 | return collection.length === num ? collection : randomTakes(len, num, collection) 10 | } 11 | 12 | function traverseKeys (obj, path, fallback) { 13 | if (!obj || typeof obj !== 'object') return typeof fallback === 'function' ? fallback() : fallback 14 | if (!path) return obj 15 | 16 | let o = Object.assign({}, obj) 17 | path = path.split('.') 18 | 19 | for (let i = 0; i < path.length; i++) { 20 | if (!o.hasOwnProperty(path[i])) return typeof fallback === 'function' ? fallback() : fallback 21 | o = o[path[i]] 22 | if (o !== Object(o) && i < path.length - 1) return typeof fallback === 'function' ? fallback() : fallback 23 | } 24 | 25 | return o 26 | } 27 | 28 | export function checkTypes (a, b) { 29 | if (typeof a !== typeof b) return false 30 | if (typeof a === 'object' && a instanceof Date && b instanceof Date) return true 31 | return typeof a === 'number' || typeof a === 'string' 32 | } 33 | -------------------------------------------------------------------------------- /test/comparison.test.js: -------------------------------------------------------------------------------- 1 | import DataField from '../src/datafield' 2 | import * as data from './data.json' 3 | 4 | const content = data.data 5 | 6 | let dataField = new DataField(content) 7 | 8 | /* global describe it expect beforeEach */ 9 | 10 | describe('Comparison', function () { 11 | beforeEach(function () { 12 | dataField = new DataField(content) 13 | }) 14 | describe('Equality', function () { 15 | it('should filter entries based on equality', function () { 16 | expect(dataField.where('age').eq(48).length).toEqual(2) 17 | }) 18 | 19 | it('should throw error if no selector is present', function () { 20 | expect(() => dataField.where().eq(48)).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 21 | }) 22 | 23 | it('should remove 1 item with matching date', function () { 24 | expect(dataField.where('registered').eq(new Date('Saturday, February 13, 2016 1:36 AM')).length).toEqual(1) 25 | }) 26 | 27 | it('should keep records with 3 friends', function () { 28 | expect(dataField.where('friends').eq(3).length).toEqual(96) 29 | }) 30 | }) 31 | 32 | describe('Inequality', function () { 33 | it('should filter entries based on inequality', function () { 34 | expect(dataField.where('age').not(48).length).toEqual(98) 35 | }) 36 | 37 | it('should should throw error if no selector is present', function () { 38 | expect(() => dataField.where().not()).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 39 | }) 40 | 41 | it('should remove 1 item with matching date', function () { 42 | expect(dataField.where('registered').not(new Date('may 1, 2015')).length).toEqual(99) 43 | }) 44 | 45 | it('should keep records with NOT 2 friends', function () { 46 | expect(dataField.where('friends').not(2).length).toEqual(99) 47 | }) 48 | }) 49 | 50 | describe('Greater', function () { 51 | it('should filter entries based on equality', function () { 52 | expect(dataField.where('age').gt(48).length).toEqual(42) 53 | }) 54 | 55 | it('should throw error if no selector is present', function () { 56 | expect(() => dataField.where().gt(48)).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 57 | }) 58 | 59 | it('should throw error if no value is present', function () { 60 | expect(() => dataField.where('age').gt()).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 61 | }) 62 | 63 | it('should filter by date', function () { 64 | expect(dataField.where('registered').gt(new Date('may 1, 2015')).length).toEqual(70) 65 | }) 66 | 67 | it('should keep records with any amount of friends (>0)', function () { 68 | expect(dataField.where('friends').gt(0).length).toEqual(98) 69 | }) 70 | }) 71 | 72 | describe('Greater-Equal', function () { 73 | it('should filter entries based on equality', function () { 74 | expect(dataField.where('age').gte(48).length).toEqual(44) 75 | }) 76 | 77 | it('should throw error if no selector is present', function () { 78 | expect(() => dataField.where().gte(48)).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 79 | }) 80 | 81 | it('should throw error if no value is present', function () { 82 | expect(() => dataField.where('age').gte()).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 83 | }) 84 | 85 | it('should filter by date', function () { 86 | expect(dataField.where('registered').gte(new Date('may 1, 2015')).length).toEqual(71) 87 | }) 88 | it('should keep records with 2 or more friends', function () { 89 | expect(dataField.where('friends').gte(2).length).toEqual(98) 90 | }) 91 | 92 | }) 93 | 94 | describe('Less', function () { 95 | it('should filter entries based on equality', function () { 96 | expect(dataField.where('age').lt(48).length).toEqual(56) 97 | }) 98 | 99 | it('should return unchanged dataset if no selector is present', function () { 100 | expect(() => dataField.where().lt(48)).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 101 | }) 102 | 103 | it('should should throw error if no value is present', function () { 104 | expect(() => dataField.where('age').lt()).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 105 | }) 106 | 107 | it('should filter by date', function () { 108 | expect(dataField.where('registered').lt(new Date('may 1, 2015')).length).toEqual(29) 109 | }) 110 | 111 | it('should keep records with less then 3 friends', function () { 112 | expect(dataField.where('friends').lt(3).length).toEqual(3) 113 | }) 114 | 115 | }) 116 | 117 | describe('Less-Equal', function () { 118 | it('should filter entries based on equality', function () { 119 | expect(dataField.where('age').lte(48).length).toEqual(58) 120 | }) 121 | 122 | it('should should throw error if no selector is present', function () { 123 | expect(() => dataField.where().lte(48)).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 124 | }) 125 | 126 | it('should throw Error if no value is present', function () { 127 | expect(() => dataField.where('age').lte()).toThrow('DataField selector or value not specified, use .where(selector) and check method arguments') 128 | }) 129 | 130 | it('should filter by date', function () { 131 | expect(dataField.where('registered').lte(new Date('may 1, 2015')).length).toEqual(30) 132 | }) 133 | 134 | it('should keep records with 2 or less friends', function () { 135 | expect(dataField.where('friends').lte(2).length).toEqual(3) 136 | }) 137 | }) 138 | 139 | describe('Boolean filters', function () { 140 | it('should leave only the active accounts', function () { 141 | expect(dataField.where('isActive').isTruthy().length).toEqual(48) 142 | }) 143 | 144 | it('should leave only the inactive accounts', function () { 145 | expect(dataField.where('isActive').isFalsy().length).toEqual(52) 146 | }) 147 | 148 | }) 149 | }) 150 | -------------------------------------------------------------------------------- /test/data.json: -------------------------------------------------------------------------------- 1 | { 2 | "data": [ 3 | { 4 | "_id": "5b420ae94fe6464ff91f5de8", 5 | "index": 0, 6 | "guid": "871eebf0-9983-4eb5-a0b5-59372a2fbecd", 7 | "isActive": true, 8 | "balance": "$1,268.06", 9 | "age": 41, 10 | "name": { 11 | "first": "Pearlie", 12 | "last": "Osborne" 13 | }, 14 | "company": "PIVITOL", 15 | "email": "pearlie.osborne@pivitol.net", 16 | "phone": "+1 (992) 418-2307", 17 | "address": "190 River Street, Spelter, Tennessee, 1088", 18 | "registered": "Monday, April 18, 2016 7:35 AM", 19 | "tags": [ 20 | "ad", 21 | "magna", 22 | "aliqua" 23 | ], 24 | "friends": [ 25 | { 26 | "id": 0, 27 | "name": "Whitney Snow" 28 | }, 29 | { 30 | "id": 1, 31 | "name": "Garza Hernandez" 32 | }, 33 | { 34 | "id": 2, 35 | "name": "Lourdes Conley" 36 | } 37 | ] 38 | }, 39 | { 40 | "_id": "5b420ae9f71b2f0e078b1016", 41 | "index": 1, 42 | "guid": "eae5f954-3972-4911-a0b8-bdd8e8220c47", 43 | "isActive": false, 44 | "balance": "$2,172.67", 45 | "age": 49, 46 | "name": { 47 | "last": "Franklin" 48 | }, 49 | "company": "SUREMAX", 50 | "email": "ashley.franklin@suremax.com", 51 | "phone": "+1 (944) 456-2798", 52 | "address": "726 Eldert Street, Interlochen, Delaware, 7519", 53 | "registered": "Monday, April 10, 2017 7:22 AM", 54 | "tags": [ 55 | "tempor", 56 | "excepteur", 57 | "ex" 58 | ], 59 | "friends": [] 60 | }, 61 | { 62 | "_id": "5b420ae993b405f6d5e9eaca", 63 | "index": 2, 64 | "guid": "199f77bf-58b1-474d-9f6d-38046a7c55a3", 65 | "isActive": false, 66 | "balance": "$3,823.04", 67 | "age": 30, 68 | "name": { 69 | "first": null, 70 | "last": "Brewer" 71 | }, 72 | "company": "INTERFIND", 73 | "email": "bernadette.brewer@interfind.me", 74 | "phone": "+1 (809) 548-2254", 75 | "address": "999 Division Avenue, Templeton, California, 5645", 76 | "registered": "Monday, July 6, 2015 4:52 AM", 77 | "tags": [ 78 | "eu", 79 | "nisi", 80 | "cillum" 81 | ], 82 | "friends":null 83 | }, 84 | { 85 | "_id": "5b420ae976dc28978caa75c6", 86 | "index": 3, 87 | "guid": "10a52d72-f1b8-4a95-9a78-1f8b7cbd9fc8", 88 | "isActive": true, 89 | "balance": "$3,934.23", 90 | "age": "24", 91 | "name": { 92 | "first": "Tamika", 93 | "last": "Ramirez" 94 | }, 95 | "company": "CORECOM", 96 | "email": "tamika.ramirez@corecom.tv", 97 | "phone": "+1 (951) 567-2309", 98 | "address": "325 Brightwater Court, Thatcher, Kentucky, 2274", 99 | "registered": "Monday, July 17, 2017 4:08 PM", 100 | "tags": [ 101 | "irure", 102 | "ad", 103 | "consectetur" 104 | ], 105 | "friends": [ 106 | { 107 | "id": 0, 108 | "name": "Wilder Harrison" 109 | }, 110 | { 111 | "id": 2, 112 | "name": 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| "name": "Frankie Clarke" 3069 | } 3070 | ] 3071 | }, 3072 | { 3073 | "_id": "5b420ae936bee66f06adc48d", 3074 | "index": 86, 3075 | "guid": "2ce3ab1b-ba40-4217-932a-1e7b546b868a", 3076 | "isActive": false, 3077 | "balance": "$3,381.02", 3078 | "age": 34, 3079 | "name": { 3080 | "first": "Crystal", 3081 | "last": "Ferguson" 3082 | }, 3083 | "company": "CENTURIA", 3084 | "email": "crystal.ferguson@centuria.me", 3085 | "phone": "+1 (816) 447-2063", 3086 | "address": "250 Indiana Place, Murillo, Massachusetts, 193", 3087 | "registered": "Wednesday, May 13, 2015 2:09 AM", 3088 | "tags": [ 3089 | "eu", 3090 | "tempor", 3091 | "dolor" 3092 | ], 3093 | "friends": [ 3094 | { 3095 | "id": 0, 3096 | "name": "Kris Webb" 3097 | }, 3098 | { 3099 | "id": 1, 3100 | "name": "Iva Farmer" 3101 | }, 3102 | { 3103 | "id": 2, 3104 | "name": "Price Hanson" 3105 | } 3106 | ] 3107 | }, 3108 | { 3109 | "_id": "5b420ae9ea662b22144b3b2e", 3110 | "index": 87, 3111 | "guid": "1f5bd9ce-3914-4e39-bace-4c1df8427fbc", 3112 | "isActive": true, 3113 | "balance": "$1,873.77", 3114 | "age": 62, 3115 | "name": { 3116 | "first": "Brittney", 3117 | "last": "Oneil" 3118 | }, 3119 | "company": "RAMEON", 3120 | "email": "brittney.oneil@rameon.tv", 3121 | "phone": "+1 (996) 400-2273", 3122 | "address": "752 Sedgwick Street, Klagetoh, Indiana, 7447", 3123 | "registered": "Wednesday, May 11, 2016 9:59 PM", 3124 | "tags": [ 3125 | "officia", 3126 | "enim", 3127 | "proident" 3128 | ], 3129 | "friends": [ 3130 | { 3131 | "id": 0, 3132 | "name": "Bauer Wilkins" 3133 | }, 3134 | { 3135 | "id": 1, 3136 | "name": "Joyce Phelps" 3137 | }, 3138 | { 3139 | "id": 2, 3140 | "name": "Bobbie Stout" 3141 | } 3142 | ] 3143 | }, 3144 | { 3145 | "_id": "5b420ae99cc137ee51063355", 3146 | "index": 88, 3147 | "guid": "56cc8d15-d5d2-49c1-8957-cada88306b3a", 3148 | "isActive": true, 3149 | "balance": "$2,297.88", 3150 | "age": 65, 3151 | "name": { 3152 | "first": "Cook", 3153 | "last": "Ashley" 3154 | }, 3155 | "company": "IMAGINART", 3156 | "email": "cook.ashley@imaginart.name", 3157 | "phone": "+1 (959) 415-3512", 3158 | "address": "713 Blake Court, Albany, Wisconsin, 8496", 3159 | "registered": "Saturday, November 1, 2014 4:14 PM", 3160 | "tags": [ 3161 | "duis", 3162 | "do", 3163 | "id" 3164 | ], 3165 | "friends": [ 3166 | { 3167 | "id": 0, 3168 | "name": "Casey Suarez" 3169 | }, 3170 | { 3171 | "id": 1, 3172 | "name": "Cathryn Griffith" 3173 | }, 3174 | { 3175 | "id": 2, 3176 | "name": "Diana Greene" 3177 | } 3178 | ] 3179 | }, 3180 | { 3181 | "_id": "5b420ae9d978835bc539f897", 3182 | "index": 89, 3183 | "guid": "83cc021c-48c8-48d7-943c-7419aed01457", 3184 | "isActive": false, 3185 | "balance": "$1,419.40", 3186 | "age": 68, 3187 | "name": { 3188 | "first": "Ashley", 3189 | "last": "Meadows" 3190 | }, 3191 | "company": "FISHLAND", 3192 | "email": "ashley.meadows@fishland.co.uk", 3193 | "phone": "+1 (971) 463-2020", 3194 | "address": "663 Glenwood Road, Wattsville, Idaho, 9832", 3195 | "registered": "Tuesday, October 28, 2014 12:04 PM", 3196 | "tags": [ 3197 | "incididunt", 3198 | "quis", 3199 | "aute" 3200 | ], 3201 | "friends": [ 3202 | { 3203 | "id": 0, 3204 | "name": "Maxwell Francis" 3205 | }, 3206 | { 3207 | "id": 1, 3208 | "name": "Annette Stafford" 3209 | }, 3210 | { 3211 | "id": 2, 3212 | "name": "Kathie Kaufman" 3213 | } 3214 | ] 3215 | }, 3216 | { 3217 | "_id": "5b420ae95d9459e3b76772ba", 3218 | "index": 90, 3219 | "guid": "3f1c52ca-9661-4966-b793-24a16d9b305b", 3220 | "isActive": true, 3221 | "balance": "$3,003.31", 3222 | "age": 20, 3223 | "name": { 3224 | "first": "Cristina", 3225 | "last": "Tran" 3226 | }, 3227 | "company": "FUELWORKS", 3228 | "email": "cristina.tran@fuelworks.biz", 3229 | "phone": "+1 (919) 493-3989", 3230 | "address": "570 Lewis Place, Sanford, Arkansas, 8398", 3231 | "registered": "Saturday, September 26, 2015 11:03 AM", 3232 | "tags": [ 3233 | "nulla", 3234 | "ullamco", 3235 | "ad" 3236 | ], 3237 | "friends": [ 3238 | { 3239 | "id": 0, 3240 | "name": "Justice Black" 3241 | }, 3242 | { 3243 | "id": 1, 3244 | "name": "Esmeralda Evans" 3245 | }, 3246 | { 3247 | "id": 2, 3248 | "name": "Dawn Grimes" 3249 | } 3250 | ] 3251 | }, 3252 | { 3253 | "_id": "5b420ae9a73155ebae460937", 3254 | "index": 91, 3255 | "guid": "6ea6909e-4a55-43bf-8255-6f036314f986", 3256 | "isActive": false, 3257 | "balance": "$1,863.14", 3258 | "age": 68, 3259 | "name": { 3260 | "first": "Tammy", 3261 | "last": "Wynn" 3262 | }, 3263 | "company": "QUORDATE", 3264 | "email": "tammy.wynn@quordate.org", 3265 | "phone": "+1 (903) 600-2793", 3266 | "address": "311 Vandam Street, Derwood, South Carolina, 530", 3267 | "registered": "Monday, December 22, 2014 4:15 PM", 3268 | "tags": [ 3269 | "ad", 3270 | "occaecat", 3271 | "esse" 3272 | ], 3273 | "friends": [ 3274 | { 3275 | "id": 0, 3276 | "name": "Page English" 3277 | }, 3278 | { 3279 | "id": 1, 3280 | "name": "Burton Rivas" 3281 | }, 3282 | { 3283 | "id": 2, 3284 | "name": "Shannon Hensley" 3285 | } 3286 | ] 3287 | }, 3288 | { 3289 | "_id": "5b420ae9484718b1f47909ef", 3290 | "index": 92, 3291 | "guid": "563d37f9-7460-462f-9927-0625ca6cfd6a", 3292 | "isActive": true, 3293 | "balance": "$1,987.10", 3294 | "age": 68, 3295 | "name": { 3296 | "first": "Nunez", 3297 | "last": "Cunningham" 3298 | }, 3299 | "company": "OVERPLEX", 3300 | "email": "nunez.cunningham@overplex.io", 3301 | "phone": "+1 (946) 448-2571", 3302 | "address": "430 Wyckoff Avenue, Garfield, Nevada, 9847", 3303 | "registered": "Sunday, May 25, 2014 9:12 AM", 3304 | "tags": [ 3305 | "proident", 3306 | "velit", 3307 | "ex" 3308 | ], 3309 | "friends": [ 3310 | { 3311 | "id": 0, 3312 | "name": "Morrow Ward" 3313 | }, 3314 | { 3315 | "id": 1, 3316 | "name": "Juliette Mendoza" 3317 | }, 3318 | { 3319 | "id": 2, 3320 | "name": "Tran Taylor" 3321 | } 3322 | ] 3323 | }, 3324 | { 3325 | "_id": "5b420ae9c350695b2d371106", 3326 | "index": 93, 3327 | "guid": "a6dfee36-56df-4fff-9b84-55a28528d7e2", 3328 | "isActive": true, 3329 | "balance": "$1,982.08", 3330 | "age": 39, 3331 | "name": { 3332 | "first": "Goldie", 3333 | "last": "Branch" 3334 | }, 3335 | "company": "KEEG", 3336 | "email": "goldie.branch@keeg.us", 3337 | "phone": "+1 (938) 565-3128", 3338 | "address": "341 Luquer Street, Dante, District Of Columbia, 4509", 3339 | "registered": "Saturday, January 20, 2018 8:34 PM", 3340 | "tags": [ 3341 | "quis", 3342 | "dolor", 3343 | "cupidatat" 3344 | ], 3345 | "friends": [ 3346 | { 3347 | "id": 0, 3348 | "name": "Louise York" 3349 | }, 3350 | { 3351 | "id": 1, 3352 | "name": "Anastasia Adams" 3353 | }, 3354 | { 3355 | "id": 2, 3356 | "name": "Lester Rios" 3357 | } 3358 | ] 3359 | }, 3360 | { 3361 | "_id": "5b420ae93ce2efbe0e4a40d6", 3362 | "index": 94, 3363 | "guid": "bb41320e-382b-4634-89cd-919a1be24521", 3364 | "isActive": false, 3365 | "balance": "$1,090.55", 3366 | "age": 24, 3367 | "name": { 3368 | "first": "Lora", 3369 | "last": "Eaton" 3370 | }, 3371 | "company": "MOLTONIC", 3372 | "email": "lora.eaton@moltonic.ca", 3373 | "phone": "+1 (956) 423-3063", 3374 | "address": "147 Cranberry Street, Marion, Utah, 4567", 3375 | "registered": "Tuesday, June 7, 2016 7:54 AM", 3376 | "tags": [ 3377 | "sint", 3378 | "nisi", 3379 | "id" 3380 | ], 3381 | "friends": [ 3382 | { 3383 | "id": 0, 3384 | "name": "Ramos Browning" 3385 | }, 3386 | { 3387 | "id": 1, 3388 | "name": "Neva Herman" 3389 | }, 3390 | { 3391 | "id": 2, 3392 | "name": "Cochran Pacheco" 3393 | } 3394 | ] 3395 | }, 3396 | { 3397 | "_id": "5b420ae9abec3302dee9c052", 3398 | "index": 95, 3399 | "guid": "cc04bdde-7125-4c8b-ba17-8aa64885f6f0", 3400 | "isActive": false, 3401 | "balance": "$1,854.76", 3402 | "age": 31, 3403 | "name": { 3404 | "first": "Franco", 3405 | "last": "Carrillo" 3406 | }, 3407 | "company": "ISOSWITCH", 3408 | "email": "franco.carrillo@isoswitch.info", 3409 | "phone": "+1 (805) 548-2213", 3410 | "address": "530 Forbell Street, Vienna, Louisiana, 1220", 3411 | "registered": "Sunday, October 9, 2016 9:34 PM", 3412 | "tags": [ 3413 | "ipsum", 3414 | "ullamco", 3415 | "pariatur" 3416 | ], 3417 | "friends": [ 3418 | { 3419 | "id": 0, 3420 | "name": "Peck Peterson" 3421 | }, 3422 | { 3423 | "id": 1, 3424 | "name": "Roach Pate" 3425 | }, 3426 | { 3427 | "id": 2, 3428 | "name": "Whitley Marks" 3429 | } 3430 | ] 3431 | }, 3432 | { 3433 | "_id": "5b420ae9b52fc81e21f21666", 3434 | "index": 96, 3435 | "guid": "d4430ebe-7e82-429a-9885-395fac0aeb2c", 3436 | "isActive": false, 3437 | "balance": "$1,464.95", 3438 | "age": 28, 3439 | "name": { 3440 | "first": "Nichole", 3441 | "last": "Mcdowell" 3442 | }, 3443 | "company": "ULTRIMAX", 3444 | "email": "nichole.mcdowell@ultrimax.net", 3445 | "phone": "+1 (961) 484-2166", 3446 | "address": "127 Chapel Street, Farmers, Rhode Island, 8610", 3447 | "registered": "Thursday, May 31, 2018 11:13 PM", 3448 | "tags": [ 3449 | "commodo", 3450 | "sit", 3451 | "amet" 3452 | ], 3453 | "friends": [ 3454 | { 3455 | "id": 0, 3456 | "name": "Schwartz Gonzalez" 3457 | }, 3458 | { 3459 | "id": 1, 3460 | "name": "Leola Buck" 3461 | }, 3462 | { 3463 | "id": 2, 3464 | "name": "Callahan Kidd" 3465 | } 3466 | ] 3467 | }, 3468 | { 3469 | "_id": "5b420ae9dbde96a7dc65d29d", 3470 | "index": 97, 3471 | "guid": "e03ead42-d62d-4ff7-a056-05b9289e2e38", 3472 | "isActive": false, 3473 | "balance": "$3,000.58", 3474 | "age": 27, 3475 | "name": { 3476 | "first": "Penny", 3477 | "last": "Foley" 3478 | }, 3479 | "company": "IMAGEFLOW", 3480 | "email": "penny.foley@imageflow.com", 3481 | "phone": "+1 (950) 568-2512", 3482 | "address": "122 Hoyt Street, Waumandee, Marshall Islands, 4335", 3483 | "registered": "Wednesday, June 21, 2017 1:50 PM", 3484 | "tags": [ 3485 | "cupidatat", 3486 | "cillum", 3487 | "nostrud" 3488 | ], 3489 | "friends": [ 3490 | { 3491 | "id": 0, 3492 | "name": "Kirby Mcmillan" 3493 | }, 3494 | { 3495 | "id": 1, 3496 | "name": "Jenny Mcgowan" 3497 | }, 3498 | { 3499 | "id": 2, 3500 | "name": "Cooper Salas" 3501 | } 3502 | ] 3503 | }, 3504 | { 3505 | "_id": "5b420ae96fb032e57d3d2956", 3506 | "index": 98, 3507 | "guid": "ca44f616-3dd7-4938-a95d-403fc55f53ac", 3508 | "isActive": true, 3509 | "balance": "$3,041.40", 3510 | "age": 34, 3511 | "name": { 3512 | "first": "Pauline", 3513 | "last": "Merrill" 3514 | }, 3515 | "company": "SCENTY", 3516 | "email": "pauline.merrill@scenty.me", 3517 | "phone": "+1 (989) 574-3364", 3518 | "address": "262 Lincoln Terrace, Kersey, American Samoa, 6732", 3519 | "registered": "May 1, 2015", 3520 | "tags": [ 3521 | "ullamco", 3522 | "officia", 3523 | "ea" 3524 | ], 3525 | "friends": [ 3526 | { 3527 | "id": 0, 3528 | "name": "Reynolds Woodard" 3529 | }, 3530 | { 3531 | "id": 1, 3532 | "name": "Sherman Booker" 3533 | }, 3534 | { 3535 | "id": 2, 3536 | "name": "Helene Herring" 3537 | } 3538 | ] 3539 | }, 3540 | { 3541 | "_id": "5b420ae917b66b4838053b0b", 3542 | "index": 99, 3543 | "guid": "d19110b6-a2a1-4484-923e-79faade32c78", 3544 | "isActive": true, 3545 | "balance": "$2,720.12", 3546 | "age": 19, 3547 | "name": { 3548 | "first": "Copeland", 3549 | "last": "Ingram" 3550 | }, 3551 | "company": "PHARMEX", 3552 | "email": "copeland.ingram@pharmex.tv", 3553 | "phone": "+1 (948) 401-3753", 3554 | "address": "865 Jardine Place, Fairhaven, Arizona, 2350", 3555 | "registered": "Saturday, January 14, 2017 12:07 AM", 3556 | "tags": [ 3557 | "qui", 3558 | "nostrud", 3559 | "commodo" 3560 | ], 3561 | "friends": [ 3562 | { 3563 | "id": 0, 3564 | "name": "Ferrell Strickland" 3565 | }, 3566 | { 3567 | "id": 1, 3568 | "name": "Jordan Montgomery" 3569 | }, 3570 | { 3571 | "id": 2, 3572 | "name": "Hickman Melendez" 3573 | } 3574 | ] 3575 | } 3576 | ] 3577 | } 3578 | 3579 | -------------------------------------------------------------------------------- /test/general.test.js: -------------------------------------------------------------------------------- 1 | import DataField from '../src/datafield' 2 | import * as data from './data.json' 3 | import error from '../src/errors' 4 | 5 | const content = data.data 6 | 7 | let dataField = new DataField(content) 8 | 9 | /* global describe it expect beforeEach */ 10 | 11 | describe('General', function () { 12 | beforeEach(function () { 13 | dataField = new DataField(content) 14 | }) 15 | 16 | describe('Constructor errors', function () { 17 | it('throws an error if no array is provided', function () { 18 | expect(() => new DataField()).toThrow('array should be passed into the DataField constructor') 19 | }) 20 | 21 | it('throws an error if no argument is not an array', function () { 22 | expect(() => new DataField({})).toThrow('DataField can only accept arrays') 23 | }) 24 | 25 | it('throws a general error if error type is unknown', function () { 26 | expect(() => error()).toThrow('DataField error') 27 | }) 28 | }) 29 | 30 | describe('Data array', function () { 31 | it('contains data for 100 entries', function () { 32 | expect(content.length).toEqual(100) 33 | }) 34 | }) 35 | 36 | describe('DataField general', function () { 37 | it('should return DataField', function () { 38 | expect(dataField instanceof DataField).toBe(true) 39 | }) 40 | 41 | it('should return proper length() via method call', function () { 42 | const length = dataField.take(6).length 43 | expect(length).toEqual(6) 44 | }) 45 | 46 | it('should return an array of 100 elements', function () { 47 | expect(dataField.values().length).toEqual(100) 48 | }) 49 | }) 50 | 51 | describe('Nested props', function () { 52 | it('should find values for nested prop', function () { 53 | const data = dataField.has('name.first') 54 | expect(data.length).toEqual(98) 55 | }) 56 | 57 | it('should find values for array', function () { 58 | const data = dataField.has('friends') 59 | expect(data.length).toEqual(98) 60 | }) 61 | 62 | it('should find nested prop', function () { 63 | const data = dataField.exists('name.first') 64 | expect(data.length).toEqual(99) 65 | }) 66 | 67 | it('should remove all entries', function () { 68 | const data = dataField.exists('name.first.test') 69 | expect(data.length).toEqual(0) 70 | }) 71 | }) 72 | describe('Includes', function () { 73 | it('should throw an error when used without selector', function () { 74 | expect(() => dataField.includes('ad')).toThrow('DataField selector not specified, use .where(selector)') 75 | }) 76 | 77 | it('should return this if no value is specified', function () { 78 | expect(dataField.where('tags').includes().length).toEqual(100) 79 | }) 80 | 81 | it('filters by array including value', function () { 82 | expect(dataField.where('tags').includes('ad').length).toEqual(5) 83 | }) 84 | }) 85 | 86 | describe('Pick Test', function () { 87 | it('should keep even elements', function () { 88 | expect(dataField.pick('even').length).toEqual(50) 89 | }) 90 | 91 | it('should keep even elements', function () { 92 | expect(dataField.pick('odd').length).toEqual(50) 93 | }) 94 | 95 | it('should keep every 3rd element', function () { 96 | expect(dataField.pick('3n').length).toEqual(34) 97 | }) 98 | 99 | it('should keep every 5th element', function () { 100 | expect(dataField.pick('5n').length).toEqual(20) 101 | }) 102 | 103 | it('should throw an error if argument is not a string', function () { 104 | expect(() => dataField.pick(42)).toThrow('DataField selector .pick() expects a string') 105 | }) 106 | 107 | it('should throw an error if argument is not right', function () { 108 | expect(() => dataField.pick("wrong string")).toThrow('DataField selector .pick() should have a proper argument value — "even", "odd" or "{number}n" (i.e. 3n for every third element)') 109 | }) 110 | 111 | it('should return this if no argument provided', function () { 112 | expect(dataField.pick().length).toEqual(100) 113 | }) 114 | }) 115 | 116 | }) 117 | 118 | 119 | -------------------------------------------------------------------------------- /test/math.test.js: -------------------------------------------------------------------------------- 1 | import DataField from '../src/datafield' 2 | import * as data from './data.json' 3 | 4 | const content = data.data 5 | 6 | let dataField = new DataField(content) 7 | 8 | /* global describe it expect beforeEach */ 9 | describe('Math operations', function () { 10 | beforeEach(function () { 11 | dataField = new DataField(content) 12 | }) 13 | 14 | describe('Sums', function () { 15 | it('should sum age values from 100 entries WITH type coercion', function () { 16 | expect(dataField.sum('age', false)).toEqual(4317) 17 | }) 18 | 19 | it('should sum age values from 100 entries WITHOUT type coercion', function () { 20 | expect(dataField.sum('age')).toEqual(4293) 21 | }) 22 | 23 | it('should sum age from selected sources', function () { 24 | const data = dataField.where('age').gt(45) 25 | expect(data.sum('age')).toEqual(2608) 26 | }) 27 | 28 | it('should throw an error if no arguments', function () { 29 | const data = dataField.where('age').gt(45) 30 | expect(() => data.sum()).toThrow('DataField selector should be passed as an argument when using math methods') 31 | }) 32 | 33 | it('should sum ages from 2 selections without WITH type coercion', function () { 34 | const dataHigh = dataField.where('age').gt(45) 35 | const dataLow = dataField.where('age').lte(45) 36 | const sum = dataHigh.sum('age', false) + dataLow.sum('age', false) 37 | expect(sum).toEqual(4317) 38 | }) 39 | }) 40 | 41 | describe('Average', function () { 42 | it('should get average for age WITH type coercion', function () { 43 | expect(dataField.avg('age', false)).toEqual(43.17) 44 | }) 45 | 46 | it('should get average for age WITHOUT type coercion', function () { 47 | expect(dataField.avg('age')).toEqual(43.36363636363637) 48 | }) 49 | 50 | it('should throw an error if no arguments', function () { 51 | const data = dataField.where('age').gt(45) 52 | expect(() => data.avg()).toThrow('DataField selector should be passed as an argument when using math methods') 53 | }) 54 | }) 55 | 56 | describe('Median', function () { 57 | it('should get median for age WITH type coercion', function () { 58 | expect(dataField.median('age', false)).toEqual(44) 59 | }) 60 | 61 | it('should get median for age WITHOUT type coercion', function () { 62 | expect(dataField.median('age')).toEqual(44) 63 | }) 64 | 65 | it('should return 0 if there are no entries', function () { 66 | expect(new DataField([]).median('age')).toEqual(0) 67 | }) 68 | 69 | it('should return value if there is only 1 value', function () { 70 | expect(new DataField([{value: 42}]).median('value')).toEqual(42) 71 | }) 72 | 73 | it('should throw an error if no arguments', function () { 74 | const data = dataField.where('age').gt(45) 75 | expect(() => data.median()).toThrow('DataField selector should be passed as an argument when using math methods') 76 | }) 77 | }) 78 | 79 | describe('Random', function () { 80 | it('should return a new DataField with a single element in it', function () { 81 | expect(dataField.takeRandom(1).length).toEqual(1) 82 | }) 83 | 84 | it('should return a new DataField with random number of elements (at least 1)', function () { 85 | expect(dataField.takeRandom()) 86 | }) 87 | 88 | it('should return a new DataField with 100 elements', function () { 89 | expect(dataField.takeRandom(100).length).toEqual(100) 90 | }) 91 | 92 | it('should return a new DataField with 100 elements', function () { 93 | expect(dataField.takeRandom(Math.floor(Math.random() * 200) + 100).length).toEqual(100) 94 | }) 95 | 96 | it('should try to parse string', function () { 97 | expect(dataField.takeRandom('7').length).toEqual(7) 98 | }) 99 | 100 | it('should try to parse string', function () { 101 | expect(dataField.takeRandom('not a number').length).toEqual(1) 102 | }) 103 | }) 104 | }) 105 | -------------------------------------------------------------------------------- /test/multiFilter.test.js: -------------------------------------------------------------------------------- 1 | import DataField from '../src/datafield' 2 | import * as data from './data.json' 3 | 4 | const content = data.data 5 | 6 | let dataField = new DataField(content) 7 | 8 | /* global describe it expect beforeEach */ 9 | describe('MultiFilter', function () { 10 | beforeEach(function () { 11 | dataField = new DataField(content) 12 | }) 13 | 14 | describe('test .any cases', function () { 15 | it('checks .gt', function () { 16 | expect(dataField.where('age').any({gt: 30}).length).toEqual(dataField.where('age').gt(30).length) 17 | }) 18 | 19 | it('checks two-zone filter', function () { 20 | expect(dataField.where('age') 21 | .any({eq: 34, lt: 30, gt: 50}).length).toEqual(67) 22 | 23 | expect(dataField.where('age') 24 | .any({lt: 30, gt: 50}).length).toEqual(64) 25 | }) 26 | 27 | }) 28 | 29 | describe('test .all cases', function () { 30 | it('checks 3 params', function () { 31 | const multi = dataField.where('age') 32 | .all({gt: 20, lt: 40, not: 36}) 33 | const chained = dataField.where('age') 34 | .gt(20).lt(40).not(36) 35 | expect(multi.length).toEqual(chained.length) 36 | }) 37 | 38 | it('checks truthy value', function () { 39 | expect(dataField.where('age').all({is: true}).length).toEqual(100) 40 | expect(dataField.where('friends').all({is: true}).length).toEqual(99) 41 | }) 42 | 43 | it('checks falsy value', function () { 44 | expect(dataField.where('friends').all({is: false}).length).toEqual(1) 45 | }) 46 | 47 | it('checks multi params', function () { 48 | expect(dataField.where('age').all( 49 | { 50 | is: true, 51 | range: [1, 100], 52 | gt: 3, 53 | gte: 50, 54 | lt: 60, 55 | lte: 80, 56 | not: 55 57 | } 58 | ).length).toEqual(17) 59 | 60 | expect(dataField.where('age').all( 61 | { 62 | is: true, 63 | range: [1, 100], 64 | gt: 3, 65 | lt: 60, 66 | lte: 80, 67 | not: 55, 68 | eq: 34 69 | } 70 | ).length).toEqual(3) 71 | 72 | expect(dataField.where('age') 73 | .all({range: [45, 55]}).length) 74 | .toEqual(dataField.where('age').range(45, 55).length) 75 | }) 76 | 77 | }) 78 | }) 79 | -------------------------------------------------------------------------------- /test/range.test.js: -------------------------------------------------------------------------------- 1 | import DataField from '../src/datafield' 2 | import * as data from './data.json' 3 | 4 | const content = data.data 5 | 6 | let dataField = new DataField(content) 7 | 8 | /* global describe it expect beforeEach */ 9 | 10 | describe('Range', function () { 11 | beforeEach(function () { 12 | dataField = new DataField(content) 13 | }) 14 | describe('Different comparison types', function () { 15 | it('should throw an error as types are different', function () { 16 | const err = 'DataField range() method accepts 2 arguments of the same type' 17 | expect(() => dataField.where('index').range(1, 'str')).toThrow(err) 18 | expect(() => dataField.where('index').range('str')).toThrow(err) 19 | expect(() => dataField.where('index').range()).toThrow(err) 20 | }) 21 | }) 22 | 23 | describe('Successful filtering by index', function () { 24 | it('should filter 50 entries by index', function () { 25 | expect(dataField.where('index').range(0, 50).length).toEqual(50) 26 | }) 27 | }) 28 | 29 | describe('Successful filtering by date', function () { 30 | it('should filter 65 entries', function () { 31 | expect(dataField.where('registered').range(new Date('may 3, 1980'), new Date('jan 1, 2017')).length).toEqual(65) 32 | }) 33 | }) 34 | 35 | describe('Successful filtering by alphabet', function () { 36 | it('select from A to C', function () { 37 | expect(dataField.where('name.first').range('A', 'C').length).toEqual(16) 38 | }) 39 | it('select from U to Zz', function () { 40 | expect(dataField.where('name.first').range('U', 'Zz').length).toEqual(6) 41 | }) 42 | }) 43 | 44 | describe('Successful filtering by array length', function () { 45 | it('selects arrays with length >0', function () { 46 | expect(dataField.where('friends').range(1, 100).length).toEqual(98) 47 | }) 48 | }) 49 | 50 | describe('Successful filtering by array length (take only length of 2)', function () { 51 | it('selects arrays with length >0', function () { 52 | expect(dataField.where('friends').range(2, 3).length).toEqual(1) 53 | }) 54 | }) 55 | 56 | }) 57 | -------------------------------------------------------------------------------- /test/sorting.test.js: -------------------------------------------------------------------------------- 1 | import DataField from '../src/datafield' 2 | import * as data from './data.json' 3 | 4 | const content = data.data 5 | 6 | let dataField = new DataField(content) 7 | 8 | /* global describe it expect beforeEach */ 9 | 10 | describe('Sorting', function () { 11 | 12 | beforeEach(function () { 13 | dataField = new DataField(content) 14 | }) 15 | 16 | it('should throw an error', function () { 17 | expect(() => dataField.asc()).toThrow('DataField selector not specified, use .where(selector)') 18 | }) 19 | 20 | it('should throw an error on empty set', function () { 21 | expect(() => new DataField([]).asc()).toThrow('DataField selector not specified, use .where(selector)') 22 | }) 23 | 24 | it('should return unchanged dataset when sorting type is not supported', function () { 25 | expect(dataField.where('age').asc().length).toEqual(100) 26 | }) 27 | 28 | it('should throw an error', function () { 29 | expect(() => dataField.desc()).toThrow('DataField selector not specified, use .where(selector)') 30 | }) 31 | 32 | it('should sort data alphabetically', function () { 33 | const name = dataField.where('name.last').asc().toArray()[0].name.last 34 | expect(name).toEqual('Abbott') 35 | }) 36 | 37 | it('should sort data alphabetically in descending order', function () { 38 | const name = dataField.where('name.last').desc().toArray()[0].name.last 39 | expect(name).toEqual('Yates') 40 | }) 41 | 42 | it('should sort data by age in ascending order', function () { 43 | const name = dataField.where('age').asc().toArray()[0].age 44 | expect(name).toEqual(19) 45 | }) 46 | 47 | it('should sort data by age in descending order', function () { 48 | const name = dataField.where('age').desc().toArray()[0].age 49 | expect(name).toEqual(68) 50 | }) 51 | 52 | it('should return unchanged if type is not right - using asc()', function () { 53 | const name = dataField.sort({by: 'isActive'}).toArray()[0].age 54 | expect(name).toEqual(41) 55 | }) 56 | 57 | it('should return unchanged if type is not right - using desc()', function () { 58 | const name = dataField.sort({by: 'isActive', order: 'desc'}).toArray()[0].age 59 | expect(name).toEqual(41) 60 | }) 61 | 62 | it('should sort data using sort() method', function () { 63 | const company = dataField.sort({by: 'company', order: 'desc', type: 'string'}).toArray()[0].company 64 | expect(company).toEqual('ZOLAVO') 65 | }) 66 | 67 | it('should sort data using sort() method, defaulting to "asc" order and "string" type', function () { 68 | const company = dataField.sort({by: 'company'}).toArray()[0].company 69 | expect(company).toEqual('ANIVET') 70 | }) 71 | 72 | it('should sort by string type because "date" type is not passed, using desc() method', function () { 73 | const company = dataField.where('registered').desc().toArray()[0].company 74 | expect(company).toEqual('EXIAND') 75 | }) 76 | 77 | it('should sort by string type because "date" type is not passed, using asc() method', function () { 78 | const company = dataField.where('registered').asc().toArray()[0].company 79 | expect(company).toEqual('BOILCAT') 80 | }) 81 | 82 | it('should sort data by date', function () { 83 | const company = dataField.sort({by: 'registered', type: 'date'}).toArray()[0].company 84 | expect(company).toEqual('ISOTRACK') 85 | }) 86 | 87 | it('should sort data by date in descending order', function () { 88 | const company = dataField.sort({by: 'registered', order: 'desc', type: 'date'}).toArray()[0].company 89 | expect(company).toEqual('PAPRIKUT') 90 | }) 91 | 92 | it('should sort data by friends array length', function () { 93 | const company = dataField.where('friends').asc().toArray()[0].company 94 | expect(company).toEqual('SUREMAX') 95 | }) 96 | 97 | it('should sort data by friends array length in descending order', function () { 98 | const company = dataField.where('friends').desc().toArray()[0].company 99 | expect(company).toEqual('COMTENT') 100 | }) 101 | 102 | }) 103 | --------------------------------------------------------------------------------