Revert "Node 16 Upgrade (#30354)" (#30399)

This reverts commit f4c3c3f.

.babelrc

@@ -1,10 +1,33 @@
 {
-    "plugins": [
-      "@babel/transform-object-assign",
-      "@babel/plugin-proposal-object-rest-spread",
+  "plugins": [
+    "transform-object-assign",
+    "transform-object-rest-spread"
+  ],
+  "presets": [
+    [
+      "env",
+      {
+        "targets": {
+          "browsers": [
+            "last 2 versions",
+            "IE >= 11"
+          ]
+        },
+        "modules": false
+      }
     ],
-    "presets": [
-      "@babel/react",
-      "@babel/preset-env"
-    ]
+    "babel-preset-react"
+  ],
+  "env": {
+    "test": {
+      "presets": [
+        [
+          "env",
+          {
+            "modules": "commonjs",
+          }
+        ]
+      ]
+    }
+  },
 }

.github/workflows/js-tests.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-20.04 ]
-        node-version: [ 12, 14, 16 ]
+        node-version: [ 12 ]
         python-version: [ 3.8 ]
 
     steps:
@@ -28,9 +28,6 @@ jobs:
       uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.node-version }}
-
-    - name: Setup npm
-      run: npm i -g [email protected]
 
     - name: Install Firefox 61.0
       run: |

.github/workflows/quality-checks.yml

@@ -15,8 +15,8 @@ jobs:
       matrix:
         os: [ ubuntu-20.04 ]
         python-version: [ 3.8 ]
-        node-version: [ 12, 14, 16 ]
-        
+        node-version: [ 12 ]
+
     steps:
 
     - uses: actions/checkout@v2
@@ -39,9 +39,6 @@ jobs:
       with:
         node-version: ${{ matrix.node-version }}
 
-    - name: Setup npm
-      run: npm i -g [email protected]
-
     - name: Get pip cache dir
       id: pip-cache-dir
       run: |

Dockerfile

@@ -106,7 +106,6 @@ RUN pip install -r requirements/edx/base-minus-local.txt
 # via pip.
 # The node environment is already 'activated' because its .../bin was put on $PATH.
 RUN nodeenv /edx/app/edxapp/nodeenv --node=12.11.1 --prebuilt
-RUN npm install -g [email protected]
 COPY package.json package.json
 COPY package-lock.json package-lock.json
 RUN npm set progress=false && npm install

jest.config.js

@@ -1,18 +1,17 @@
 module.exports = {
-    "globals": {
-        "gettext": (t) => { return t; },
-    },
-    "modulePaths": [
-        "common/static/common/js/components",
-    ],
-    "setupFilesAfterEnv": ["<rootDir>/setupTests.js"],
-    "testMatch": [
-        "/**/*.test.jsx",
-        "common/static/common/js/components/**/?(*.)+(spec|test).js?(x)",
-    ],
-    "testEnvironment": "jsdom",
-    "transform": {
-        "^.+\\.jsx$": "babel-jest",
-        "^.+\\.js$": "babel-jest",
-    },
+  "globals": {
+    "gettext": (t) => { return t; },
+  },
+  "modulePaths": [
+    "common/static/common/js/components",
+  ],
+  "setupTestFrameworkScriptFile": "<rootDir>/setupTests.js",
+  "testMatch": [
+    "/**/*.test.jsx",
+    "common/static/common/js/components/**/?(*.)+(spec|test).js?(x)",
+  ],
+  "transform": {
+    "^.+\\.jsx$": "babel-jest",
+    "^.+\\.js$": "babel-jest",
+  },
 };