JavaScript

Environment

Qualified supports Node 6, 8, 10, and 12.

Timeout

The sandbox environment will timeout the code within 12 seconds.

Node Packages

The following packages have been installed:

Node 6

• axios: 0.15.3
• bignumber.js: 4.0.4
• bluebird: 3.5.1
• brain: 0.7.0
• canvas: 1.6.7
• chai-http: 3.0.0
• chai-spies: 0.7.1
• chai: 3.5.0
• cheerio: 0.22.0
• enzyme: 2.9.1
• escape-html: 1.0.3
• expect: 1.20.2
• express: 4.16.1
• faker: 3.1.0
• ganache-core: 2.1.0
• jsdom: 10.1.0
• lodash: 4.17.4
• mocha: 3.5.3
• moment: 2.18.1
• mongodb: 2.2.33
• mongoose: 4.10.8
• pg: 7.4.0
• q: 1.5.0
• ramda: 0.23.0
• react-addons-test-utils: 15.6.2
• react-dom: 15.6.2
• react-redux: 4.4.8
• react-test-renderer: 15.6.2
• react: 15.6.2
• redis: 2.8.0
• redux: 3.7.2
• should: 8.4.0
• sinon: 1.17.7
• sqlite3: 3.1.13
• underscore: 1.8.3
• web3: 1.0.0-beta.34

Node 8

• axios: 0.15.3
• bignumber.js: 4.0.4
• bluebird: 3.5.1
• brain: 0.7.0
• canvas: 1.6.7
• chai-http: 3.0.0
• chai-spies: 0.7.1
• chai: 3.5.0
• cheerio: 0.22.0
• crypto-js: 3.1.9-1
• enzyme: 2.9.1
• escape-html: 1.0.3
• expect: 1.20.2
• express: 4.16.1
• faker: 3.1.0
• jsdom: 10.1.0
• lodash: 4.17.4
• mocha: 3.5.3
• moment: 2.18.1
• mongodb: 2.2.33
• mongoose: 4.10.8
• pg: 7.4.0
• ramda: 0.23.0
• react-addons-test-utils: 15.6.2
• react-dom: 15.6.2
• react-redux: 4.4.8
• react-test-renderer: 15.6.2
• react: 15.6.2
• redis: 2.8.0
• redux: 3.7.2
• should: 8.4.0
• sinon: 1.17.7
• sqlite3: 3.1.13

Node 10

Since Node 10, we have multiple presets for different kinds of challenges.

Default (no preset)

• @babel/core: 7.2.2
• @babel/preset-env: 7.3.1
• @babel/register: 7.0.0
• @babel/runtime: 7.3.1
• axios: 0.18.0
• babel-jest: 24.7.1
• bignumber.js: 8.0.1
• body-parser: 1.19.0
• chai: 4.2.0
• chai-http: 4.2.1
• cheerio: 1.0.0-rc.2
• escape-html: 1.0.3
• esm: 3.1.3
• espower-loader: 1.2.2
• express: 4.16.4
• faker: 4.1.0
• fast-check: 1.8.1
• jest: 24.7.1
• jsdom: 13.0.0
• knex: 0.16.3
• lodash: 4.17.11
• mocha: 5.2.0
• mongodb: 3.1.10
• mongoose: 5.3.14
• pg: 7.7.1
• pg-hstore: 2.3.2
• power-assert: 1.6.1
• ramda: 0.26.1
• redis: 2.8.0
• sequelize: 4.42.0
• sinon: 7.1.1
• sinon-chai: 3.3.0
• socket.io: 2.2.0
• socket.io-client: 2.2.0
• sqlite3: 4.0.4

React (react preset)

• @babel/core: 7.4.3
• @babel/plugin-proposal-class-properties: 7.4.4
• @babel/preset-env: 7.4.3
• @babel/preset-react: 7.0.0
• @babel/runtime: 7.4.3
• @testing-library/dom: 5.2.1
• @testing-library/react: 8.0.1
• @testing-library/react-hooks: 1.0.2
• @testing-library/user-event: 4.1.0
• axios: 0.18.0
• babel-jest: 24.7.1
• classnames: 2.2.6
• cross-fetch: 3.0.4
• enzyme: 3.9.0
• enzyme-adapter-react-16: 1.12.1
• enzyme-to-json: 3.3.5
• escape-html: 1.0.3
• immer: 3.1.3
• jest: 24.7.1
• jest-dom: 3.5.0
• jest-environment-jsdom: 24.7.1
• jest-fetch-mock: 2.1.2
• jest-snapshot: 24.7.1
• mobx: 5.9.4
• mobx-react: 5.4.3
• prop-types: 15.7.2
• react: 16.8.6
• react-dom: 16.8.6
• react-redux: 7.0.3
• react-test-renderer: 16.8.6
• rebass: 3.1.2
• recompose: 0.30.0
• redux: 4.0.1
• reselect: 4.0.0
• sinon: 7.3.1
• styled-components: 4.3.2
• styled-system: 5.0.16
• use-immer: 0.3.3

Vue (vue preset)

Only available in Project Code Challenges.

• @babel/core: 7.4.4
• @babel/plugin-transform-runtime: 7.4.4
• @babel/preset-env: 7.4.4
• @babel/runtime: 7.4.4
• @testing-library/dom: 5.2.1
• @testing-library/vue: 1.0.3
• @vue/test-utils: 1.0.0-beta.29
• axios: 0.18.0
• babel-jest: 24.8.0
• babel-plugin-dynamic-import-node: 2.2.0
• cross-fetch: 3.0.4
• jest-dom: 3.5.0
• jest-fetch-mock: 2.1.2
• jest-serializer-vue: 2.0.2
• jest-transform-stub: 2.0.0
• jest: 24.8.0
• sinon: 7.3.2
• vue-jest: vuejs/vue-jest#abcaaf2f0cc580d84f36c125110c7320d3f4a6b6
• vue-template-compiler: 2.6.10
• vue: 2.6.10
• vuex: 3.1.1

Node 12

Default (no preset)

• @babel/core: 7.10.5
• @babel/preset-env: 7.10.4
• @babel/register: 7.10.5
• @babel/runtime: 7.10.5
• @codewars/test-compat: 1.0.0
• axios: 0.19.2
• babel-jest: 26.1.0
• bcrypt: 5.0.0
• bignumber.js: 9.0.0
• body-parser: 1.19.0
• chai-http: 4.3.0
• chai: 4.2.0
• cheerio: 1.0.0-rc.3
• cookie-parser: 1.4.5
• escape-html: 1.0.3
• esm: 3.2.25
• espower-loader: 1.2.2
• express: 4.17.1
• faker: 4.1.0
• fast-check: 1.26.0
• jest: 26.1.0
• jsdom: 16.3.0
• lodash: 4.17.19
• mocha: 8.0.1
• mongodb: 3.5.9
• mongoose: 5.9.24
• objection: 2.2.1
• pg-hstore: 2.3.3
• pg: 8.3.0
• power-assert: 1.6.1
• query-string: 6.13.1
• ramda: 0.27.0
• redis: 3.0.2
• sequelize: 6.3.3
• sinon-chai: 3.5.0
• sinon: 9.0.2
• socket.io-client: 2.3.0
• socket.io: 2.3.0
• sqlite3: 5.0.0

React (react preset)

• @babel/core: 7.10.5
• @babel/plugin-proposal-class-properties: 7.10.4
• @babel/preset-env: 7.10.4
• @babel/preset-react: 7.10.4
• @babel/runtime: 7.10.5
• @testing-library/dom: 7.21.0
• @testing-library/jest-dom: ^5.11.1
• @testing-library/react-hooks: 3.3.0
• @testing-library/react: 10.4.7
• @testing-library/user-event: 12.0.11
• axios: 0.19.2
• babel-jest: 26.1.0
• classnames: 2.2.6
• cross-fetch: 3.0.5
• enzyme-adapter-react-16: 1.15.2
• enzyme-to-json: 3.5.0
• enzyme: 3.11.0
• escape-html: 1.0.3
• immer: 7.0.5
• jest-environment-jsdom: 26.1.0
• jest-fetch-mock: 3.0.3
• jest-snapshot: 26.1.0
• jest: 26.1.0
• marked: 1.1.1
• mobx-react: 6.2.2
• mobx: 5.15.4
• prop-types: 15.7.2
• react-cookie: 4.0.3
• react-dom: 16.13.1
• react-is: ^16.13.1
• react-redux: 7.2.0
• react-router-dom: 5.2.0
• react-test-renderer: 16.13.1
• react: 16.13.1
• rebass: 4.0.7
• recompose: 0.30.0
• redux: 4.0.5
• reselect: 4.0.0
• sinon: 9.0.2
• styled-components: 5.1.1
• styled-system: 5.1.5
• use-immer: 0.4.0

Vue (vue preset)

Only available in Project Code Challenges.

• @babel/core: 7.10.5
• @babel/plugin-transform-runtime: 7.10.5
• @babel/preset-env: 7.10.4
• @babel/runtime: 7.10.5
• @testing-library/dom: 7.21.0
• @testing-library/jest-dom: ^5.11.1
• @testing-library/vue: 5.0.4
• @vue/test-utils: 1.0.3
• axios: 0.19.2
• babel-core: ^7.0.0-bridge.0
• babel-jest: 26.1.0
• babel-plugin-dynamic-import-node: 2.3.3
• cross-fetch: 3.0.5
• jest-fetch-mock: 3.0.3
• jest-serializer-vue: 2.0.2
• jest-transform-stub: 2.0.0
• jest: 26.1.0
• sinon: 9.0.2
• vue-jest: ^3.0.6
• vue-template-compiler: 2.6.11
• vue: 2.6.11
• vuex: 3.5.1

Testing

Our JavaScript environment supports the following testing frameworks:

• javascript/mocha-bdd
• javascript/mocha-tdd
• javascript/karma-bdd
• javascript/karma-tdd
• javascript/cw-2
• javascript/jest