Create a list of known code languages (#37648)

data/variables/code-languages.yml

@@ -0,0 +1,82 @@
+# Comment options: number (#), slash (//), percent (%%), xml (<!-- -->), none
+bash:
+  name: Bash
+  comment: number
+csharp:
+  name: C#
+  comment: slash
+dockerfile:
+  name: Dockerfile
+  comment: number
+geojson:
+  name: GeoJSON
+  comment: none
+golang:
+  name: Go
+  comment: slash
+graphql:
+  name: GraphQL
+  comment: number
+groovy:
+  name: Groovy
+  comment: slash
+html:
+  name: HTML
+  comment: xml
+http:
+  name: HTTP
+  comment: none
+java:
+  name: Java
+  comment: slash
+javascript:
+  name: JavaScript
+  comment: slash
+json:
+  name: JSON
+  comment: none
+jsonc:
+  name: JSONC
+  comment: slash
+markdown:
+  name: Markdown
+  comment: xml
+math:
+  name: Math
+  comment: percent
+mermaid:
+  name: Mermaid
+  comment: percent
+powershell:
+  name: PowerShell
+  comment: number
+python:
+  name: Python
+  comment: number
+ruby:
+  name: Ruby
+  comment: number
+scss:
+  name: SCSS
+  comment: slash
+shell:
+  name: Shell
+  comment: number
+stl:
+  name: STL
+  comment: none
+tasklist:
+  name: Tasklist
+  comment: xml
+text:
+  name: Text
+  comment: number
+topojson:
+  name: TopoJSON
+  comment: none
+xml:
+  name: XML
+  comment: xml
+yaml:
+  name: YAML
+  comment: number

src/content-linter/tests/lint-code-languages.js

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+// Code languages must be listed in data/variables/code-languages.yml
+import fs from 'fs'
+import walkFiles from '../../../script/helpers/walk-files.js'
+import yaml from 'js-yaml'
+
+const allFiles = walkFiles('content', '.md').concat(walkFiles('data', '.md'))
+const languages = Object.keys(
+  yaml.load(fs.readFileSync('./data/variables/code-languages.yml', 'utf8'))
+)
+
+describe.skip('lint-code-languages', () => {
+  test.each(allFiles)('%s', async (file) => {
+    const fileContents = await fs.promises.readFile(file, 'utf8')
+    for (const [, lang] of fileContents.matchAll(/```(\S+)/gm)) {
+      expect(languages).toContain(lang)
+    }
+  })
+})