chore: Convert Standard to eslint-config-standard (#1328)

* chore: Move standard to ESLint config

* fix: auto-fix ESLint indent issues

* fix: ESLint prefer-regex-literals

* fix: ESLint array-callback-return

- .filter must return a boolean value
- .map replaced with forEach when the value isn't used

* fix: ESLint no-extra-semi

.eslintignore

@@ -0,0 +1 @@
+dist/

.eslintrc.js

@@ -0,0 +1,28 @@
+module.exports = {
+  env: {
+    browser: true,
+    commonjs: true,
+    es2020: true,
+    node: true
+  },
+  parser: 'babel-eslint',
+  extends: [
+    'eslint:recommended',
+    'standard'
+  ],
+  parserOptions: {
+    ecmaVersion: 11
+  },
+  rules: {
+  },
+  overrides: [
+    {
+      files: [
+        '**/tests/**/*.js'
+      ],
+      env: {
+        jest: true
+      }
+    }
+  ]
+}

.github/workflows/js-lint.yml

@@ -21,7 +21,7 @@ jobs:
         with:
           cancel_others: 'false'
           github_token: ${{ github.token }}
-          paths: '["**/*.js", "package*.json", ".github/workflows/js-lint.yml"]'
+          paths: '["**/*.js", "package*.json", ".github/workflows/js-lint.yml", ".eslint*"]'
 
   lint:
     runs-on: ubuntu-latest
@@ -53,7 +53,7 @@ jobs:
         run: npm ci
 
       - name: Run linter
-        run: npx standard
+        run: npx eslint .
 
       - name: Check dependencies
         run: npm run check-deps

.github/workflows/test-translations.yml

@@ -38,7 +38,7 @@ jobs:
         run: npm ci
 
       - name: Run linter
-        run: npx standard
+        run: npx eslint .
 
       - name: Check dependencies
         run: npm run check-deps

lib/redirects/get-docs-path-from-developer-path.js

@@ -43,9 +43,9 @@ module.exports = function getDocsPathFromDeveloperPath (oldDeveloperPath, allRed
     // GraphQL paths rarely have underscores, but when they do, they are preserved (`__directive`).
     fragment = newPath.includes('/v3/')
       ? lastSegment
-        .replace(/_/g, '-')
-        // this is a special oneoff replacement
-        .replace('org-pre-receive-hooks', 'organization-pre-receive-hooks')
+          .replace(/_/g, '-')
+          // this is a special oneoff replacement
+          .replace('org-pre-receive-hooks', 'organization-pre-receive-hooks')
       : lastSegment
   }
 

lib/remove-liquid-statements.js

@@ -99,6 +99,7 @@ function removeLiquidOnly (content, allLiquidBlocks, regexes) {
       if (block.match(regexes.andGreaterThanVersionToDeprecate2)) return firstIf[0] === block.match(regexes.andGreaterThanVersionToDeprecate2)[0]
       if (block.match(regexes.notEqualsVersionToDeprecate)) return firstIf[0] === block.match(regexes.notEqualsVersionToDeprecate)[0]
       if (block.match(regexes.andNotEqualsVersionToDeprecate)) return firstIf[0] === block.match(regexes.andNotEqualsVersionToDeprecate)[0]
+      return false
     })
 
   blocksToUpdate.forEach(block => {
@@ -182,6 +183,7 @@ function removeLiquidAndContent (content, allLiquidBlocks, regexes) {
       const firstIf = block.match(firstIfRegex)
       if (block.match(regexes.lessThanNextOldestVersion)) return firstIf[0] === block.match(regexes.lessThanNextOldestVersion)[0]
       if (block.match(regexes.equalsVersionToDeprecate)) return firstIf[0] === block.match(regexes.equalsVersionToDeprecate)[0]
+      return false
     })
 
   blocksToRemove.forEach(block => {

lib/site-tree.js

@@ -18,14 +18,14 @@ const allVersions = Object.keys(require('./all-versions'))
 module.exports = async function buildSiteTree (pages, site, redirects) {
   const siteTree = {}
 
-  languageCodes.map(languageCode => {
+  languageCodes.forEach(languageCode => {
     siteTree[languageCode] = {}
 
-    allVersions.map(version => {
+    allVersions.forEach(version => {
       siteTree[languageCode][version] = {}
       const productTree = {}
 
-      products.map(item => {
+      products.forEach(item => {
         const product = { title: item.name }
 
         // return early if the product has external docs, like Atom
@@ -60,7 +60,7 @@ function buildCategoriesTree (tocItems, productHref, pages, redirects, version,
   const categoryTree = {}
 
   // for every category in a product TOC...
-  tocItems.map(item => {
+  tocItems.forEach(item => {
     const category = {}
 
     const categoryHref = path.join(productHref, item.href)
@@ -110,7 +110,7 @@ function buildMaptopicsTree (tocItems, categoryHref, pages, redirects, version,
   // for every maptopic in a category TOC...
   tocItems
     .filter(item => item.type === 'maptopic')
-    .map(item => {
+    .forEach(item => {
       const maptopic = {}
 
       const maptopicHref = path.join(categoryHref, item.href)
@@ -155,7 +155,7 @@ function buildArticlesTree (tocItems, categoryHref, pages, redirects, version, l
   if (!tocItems) return articleTree
 
   // for every article in a maptopic (or category) TOC...
-  tocItems.map(item => {
+  tocItems.forEach(item => {
     const article = {}
 
     const articleHref = path.join(categoryHref, item.href)
@@ -194,5 +194,6 @@ function getChildArticles (tocItems, maptopicPath) {
     } else {
       if (withinMaptopic) return item.href
     }
+    return false
   })
 }

lib/warm-server.js

@@ -8,7 +8,7 @@ module.exports = async function warmServer () {
     }
 
     // Promise.all is used to load multiple things in parallel
-    ;[pages, site, earlyAccessPaths] = await Promise.all([
+    [pages, site, earlyAccessPaths] = await Promise.all([
       require('./pages')(),
       require('./site-data')(),
       fetchEarlyAccessPaths()

package.json

@@ -91,6 +91,11 @@
     "del": "^4.1.1",
     "dependency-check": "^4.1.0",
     "domwaiter": "^1.1.0",
+    "eslint": "^7.13.0",
+    "eslint-config-standard": "^16.0.1",
+    "eslint-plugin-import": "^2.22.1",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-promise": "^4.2.1",
     "event-to-promise": "^0.8.0",
     "graphql": "^14.5.8",
     "heroku-client": "^3.1.0",
@@ -116,7 +121,6 @@
     "replace": "^1.2.0",
     "revalidator": "^0.3.1",
     "robots-parser": "^2.1.1",
-    "standard": "^14.3.1",
     "start-server-and-test": "^1.11.3",
     "supertest": "^4.0.2",
     "webpack-dev-middleware": "^3.7.2",
@@ -127,8 +131,8 @@
     "dev": "npm start",
     "build": "cross-env NODE_ENV=production npx webpack --mode production",
     "start-all-languages": "cross-env NODE_ENV=development nodemon server.js",
-    "lint": "standard --fix && prettier -w \"**/*.{yml,yaml}\"",
-    "test": "jest && standard && prettier -c \"**/*.{yml,yaml}\" && npm run check-deps",
+    "lint": "eslint --fix . && prettier -w \"**/*.{yml,yaml}\"",
+    "test": "jest && eslint . && prettier -c \"**/*.{yml,yaml}\" && npm run check-deps",
     "prebrowser-test": "npm run build",
     "browser-test": "start-server-and-test browser-test-server 4001 browser-test-tests",
     "browser-test-server": "cross-env NODE_ENV=production ENABLED_LANGUAGES='en,ja' PORT=4001 node server.js",
@@ -147,13 +151,6 @@
     "node": "12 - 14"
   },
   "repository": "https://github.com/github/docs",
-  "standard": {
-    "parser": "babel-eslint",
-    "env": [
-      "browser",
-      "jest"
-    ]
-  },
   "husky": {
     "hooks": {
       "pre-commit": "node script/prevent-translation-commits.js",

script/content-migrations/update-developer-site-links.js

@@ -16,7 +16,7 @@ const files = ['content', 'data'].map(dir => {
 }).flat()
 
 // match [foo](/v3) and [bar](/v4) Markdown links
-const linkRegex = new RegExp('\\(/v[34].*?\\)', 'g')
+const linkRegex = /\(\/v[34].*?\)/g
 
 main()
 

script/graphql/build-changelog-from-markdown.js

@@ -76,11 +76,11 @@ async function main () {
 function getEntry (matches, regex) {
   return matches
     ? matches.map(match => {
-      const entry = {}
-      entry.title = cleanPreviewLinks(match.match(regex)[1])
-      entry.changes = getChangedItems(match.match(regex)[2])
-      return entry
-    })
+        const entry = {}
+        entry.title = cleanPreviewLinks(match.match(regex)[1])
+        entry.changes = getChangedItems(match.match(regex)[2])
+        return entry
+      })
     : []
 }
 

script/update-readme.js

@@ -46,6 +46,7 @@ allScripts.forEach(script => {
       if (startCommentRegex.test(cmt)) addToReadme = true
       if (endCommentRegex.test(cmt)) addToReadme = false
       if (addToReadme && !cmt.includes(startComment) && !cmt.includes(endComment)) return cmt
+      return false
     })
     // remove comment markers and clean up newlines
     .map(cmt => cmt.replace(/^(\/\/|#) ?/m, ''))

tests/rendering/sidebar.js

@@ -6,7 +6,7 @@ describe('sidebar', () => {
 
   let $homePage, $githubPage, $enterprisePage
   beforeAll(async (done) => {
-    ;[$homePage, $githubPage, $enterprisePage] = await Promise.all([
+    [$homePage, $githubPage, $enterprisePage] = await Promise.all([
       getDOM('/en'),
       getDOM('/en/github'),
       getDOM('/en/enterprise/admin')