Apply “Using Sass with Jest” environment guidance

Preparation work for Dart Sass since JavaScript compiled from Dart requires real Node.js globals which Jest doesn’t use https://github.com/sass/dart-sass#using-sass-with-jest jestjs/jest#2549
alphagov · Jan 23, 2023 · e077e5f · e077e5f
1 parent 9bc9bdf
commit e077e5f
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Showing 3 changed files with 30 additions and 6 deletions.
diff --git a/config/jest/environment/node.mjs b/config/jest/environment/node.mjs
@@ -1,12 +1,15 @@
-import { TestEnvironment } from 'jest-environment-node'
+import SingleContextNodeEnvironment from 'jest-environment-node-single-context'
 
 import { globals } from '../globals.mjs'
 
 /**
- * Default Node.js environment
- * Adds shared test globals
+ * Single context Node.js environment
+ * Adds real Node.js test globals for Dart Sass
+ *
+ * {@link https://github.com/sass/dart-sass#using-sass-with-jest}
+ * {@link https://github.com/facebook/jest/issues/2549}
  */
-class NodeEnvironment extends TestEnvironment {
+class NodeEnvironment extends SingleContextNodeEnvironment {
   async setup () {
     await super.setup()
 

diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -93,7 +93,7 @@
     "jest-axe": "^7.0.0",
     "jest-dev-server": "^6.2.0",
     "jest-environment-jsdom": "^29.3.1",
-    "jest-environment-node": "^29.3.1",
+    "jest-environment-node-single-context": "^29.0.0",
     "jest-environment-puppeteer": "^6.2.0",
     "jest-serializer-html": "^7.1.0",
     "lint-staged": "^13.1.0",