Always import jest from @jest/globals

.eslintrc.cjs

@@ -68,6 +68,9 @@ module.exports = {
         "jest/no-test-callback": "off",
         "jest/valid-describe": "off",
         "import/extensions": ["error", { json: "always", cjs: "always" }],
+        // The "jest" global is not available when using native ESM. For consistency,
+        // always disallow it.
+        "no-restricted-globals": ["error", "jest"],
       },
     },
     {
@@ -86,7 +89,9 @@ module.exports = {
         "packages/babel-register/**/*.js",
       ],
       rules: {
-        "no-restricted-globals": ["error", ...cjsGlobals],
+        // The "jest" global is not available when using native ESM. For consistency,
+        // always disallow it.
+        "no-restricted-globals": ["error", ...cjsGlobals, "jest"],
       },
     },
     {

package.json

@@ -59,8 +59,8 @@
     "gulp-filter": "^7.0.0",
     "gulp-plumber": "^1.2.1",
     "husky": "^3.0.0",
-    "jest": "^27.2.0",
-    "jest-worker": "^27.2.0",
+    "jest": "^27.3.1",
+    "jest-worker": "^27.3.1",
     "lint-staged": "^9.2.0",
     "lodash": "^4.17.21",
     "mergeiterator": "^1.2.5",

packages/babel-cli/package.json

@@ -42,6 +42,7 @@
   "devDependencies": {
     "@babel/core": "workspace:*",
     "@babel/helper-fixtures": "workspace:*",
+    "@jest/globals": "^27.3.1",
     "rimraf": "^3.0.0"
   },
   "bin": {

packages/babel-cli/test/index.js

@@ -6,6 +6,7 @@ import path from "path";
 import fs from "fs";
 import { fileURLToPath } from "url";
 import { createRequire } from "module";
+import { jest } from "@jest/globals";
 
 import { chmod } from "../lib/babel/util";
 

packages/babel-core/package.json

@@ -67,6 +67,7 @@
   "devDependencies": {
     "@babel/helper-transform-fixture-test-runner": "workspace:*",
     "@babel/plugin-transform-modules-commonjs": "workspace:*",
+    "@jest/globals": "^27.3.1",
     "@types/convert-source-map": "^1.5.1",
     "@types/debug": "^4.1.0",
     "@types/resolve": "^1.3.2",

packages/babel-core/test/assumptions.js

@@ -2,6 +2,7 @@ import path from "path";
 import { fileURLToPath } from "url";
 import { loadOptions as loadOptionsOrig, transformSync } from "../lib";
 import pluginCommonJS from "@babel/plugin-transform-modules-commonjs";
+import { jest } from "@jest/globals";
 
 const cwd = path.dirname(fileURLToPath(import.meta.url));
 

packages/babel-helper-transform-fixture-test-runner/package.json

@@ -24,7 +24,8 @@
     "source-map": "^0.5.0"
   },
   "devDependencies": {
-    "@types/jest": "^25.2.2"
+    "@jest/globals": "^27.3.1",
+    "@types/jest": "^27.0.2"
   },
   "engines": {
     "node": ">=6.9.0"

packages/babel-helper-transform-fixture-test-runner/src/index.ts

@@ -14,6 +14,7 @@ import path from "path";
 import vm from "vm";
 import QuickLRU from "quick-lru";
 import { fileURLToPath } from "url";
+import { jest } from "@jest/globals";
 
 import { createRequire } from "module";
 const require = createRequire(import.meta.url);

packages/babel-register/package.json

@@ -29,6 +29,7 @@
   "devDependencies": {
     "@babel/core": "workspace:*",
     "@babel/plugin-transform-modules-commonjs": "workspace:*",
+    "@jest/globals": "^27.3.1",
     "browserify": "^16.5.2"
   },
   "homepage": "https://babel.dev/docs/en/next/babel-register",

packages/babel-register/test/cache.js

@@ -1,6 +1,7 @@
 import fs from "fs";
 import path from "path";
 import { fileURLToPath } from "url";
+import { jest } from "@jest/globals";
 
 const testCacheFilename = path.join(
   path.dirname(fileURLToPath(import.meta.url)),

packages/babel-register/test/index.js

@@ -4,6 +4,10 @@ const fs = require("fs");
 const path = require("path");
 const child = require("child_process");
 
+// We cannot use "const" here, because Jest wraps this module in a function with a "jest" parameter.
+// eslint-disable-next-line no-var
+var { jest } = require("@jest/globals");
+
 let currentHook;
 let currentOptions;
 let sourceMapSupport = false;