mirror of
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108 lines
3.8 KiB
JavaScript
108 lines
3.8 KiB
JavaScript
const path = require('path');
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// get the path of the js-sdk so we can extend the config
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// eslint supports loading extended configs by module,
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// but only if they come from a module that starts with eslint-config-
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// So we load the filename directly (and it could be in node_modules/
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// or or ../node_modules/ etc)
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const matrixJsSdkPath = path.dirname(require.resolve('matrix-js-sdk'));
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module.exports = {
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parser: "babel-eslint",
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extends: [matrixJsSdkPath + "/.eslintrc.js"],
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plugins: [
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"react",
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"flowtype",
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"babel"
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],
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env: {
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es6: true,
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},
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parserOptions: {
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ecmaFeatures: {
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jsx: true,
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}
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},
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rules: {
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// eslint's built in no-invalid-this rule breaks with class properties
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"no-invalid-this": "off",
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// so we replace it with a version that is class property aware
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"babel/no-invalid-this": "error",
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// We appear to follow this most of the time, so let's enforce it instead
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// of occasionally following it (or catching it in review)
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"keyword-spacing": "error",
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/** react **/
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// This just uses the react plugin to help eslint known when
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// variables have been used in JSX
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"react/jsx-uses-vars": "error",
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// Don't mark React as unused if we're using JSX
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"react/jsx-uses-react": "error",
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// bind or arrow function in props causes performance issues
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// (but we currently use them in some places)
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"react/jsx-no-bind": ["warn", {
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"ignoreRefs": true,
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}],
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"react/jsx-key": ["error"],
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// Assert no spacing in JSX curly brackets
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// <Element prop={ consideredError} prop={notConsideredError} />
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//
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// https://github.com/yannickcr/eslint-plugin-react/blob/HEAD/docs/rules/jsx-curly-spacing.md
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//
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// Disabled for now - if anything we'd like to *enforce* spacing in JSX
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// curly brackets for legibility, but in practice it's not clear that the
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// consistency particularly improves legibility here. --Matthew
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//
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// "react/jsx-curly-spacing": ["error", {"when": "never", "children": {"when": "always"}}],
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// Assert spacing before self-closing JSX tags, and no spacing before or
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// after the closing slash, and no spacing after the opening bracket of
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// the opening tag or closing tag.
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//
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// https://github.com/yannickcr/eslint-plugin-react/blob/HEAD/docs/rules/jsx-tag-spacing.md
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"react/jsx-tag-spacing": ["error"],
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/** flowtype **/
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"flowtype/require-parameter-type": ["warn", {
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"excludeArrowFunctions": true,
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}],
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"flowtype/define-flow-type": "warn",
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"flowtype/require-return-type": ["warn",
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"always",
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{
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"annotateUndefined": "never",
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"excludeArrowFunctions": true,
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}
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],
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"flowtype/space-after-type-colon": ["warn", "always"],
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"flowtype/space-before-type-colon": ["warn", "never"],
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/*
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* things that are errors in the js-sdk config that the current
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* code does not adhere to, turned down to warn
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*/
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"max-len": ["warn", {
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// apparently people believe the length limit shouldn't apply
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// to JSX.
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ignorePattern: '^\\s*<',
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ignoreComments: true,
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code: 120,
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}],
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"valid-jsdoc": ["warn"],
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"new-cap": ["warn"],
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"key-spacing": ["warn"],
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"prefer-const": ["warn"],
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"arrow-parens": "off",
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// crashes currently: https://github.com/eslint/eslint/issues/6274
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"generator-star-spacing": "off",
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},
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settings: {
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flowtype: {
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onlyFilesWithFlowAnnotation: true
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},
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},
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};
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