Revert "feat: node16 upgrade (#30249)" (#30268)

This reverts commit f10ebf0.

.babelrc

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

.eslintrc.json

@@ -1,5 +1,5 @@
 {
-  "extends": "@edx/eslint-config",
+  "extends": "eslint-config-edx-es5",
   "globals": {  // Try to avoid adding any new globals.
     // Old compatibility things and hacks
     "edx": true,

.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:
@@ -29,9 +29,6 @@ jobs:
       with:
         node-version: ${{ matrix.node-version }}
 
-    - name: Setup npm
-      run: npm i -g [email protected]
-
     - name: Install Firefox 61.0
       run: |
         sudo apt-get purge firefox

.github/workflows/quality-checks.yml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         os: [ ubuntu-20.04 ]
         python-version: [ 3.8 ]
-        node-version: [ 12, 14, 16 ]
+        node-version: [ 12 ]
 
     steps:
 
@@ -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

@@ -105,7 +105,7 @@ RUN pip install -r requirements/edx/base-minus-local.txt
 # Must be done after Python requirements, since nodeenv is installed
 # via pip.
 # The node environment is already 'activated' because its .../bin was put on $PATH.
-RUN nodeenv /edx/app/edxapp/nodeenv --node=16.14.0 --npm=8.5.x --prebuilt
+RUN nodeenv /edx/app/edxapp/nodeenv --node=12.11.1 --prebuilt
 COPY package.json package.json
 COPY package-lock.json package-lock.json
 RUN npm set progress=false && npm install

jest.config.js

@@ -5,12 +5,11 @@ module.exports = {
   "modulePaths": [
     "common/static/common/js/components",
   ],
-  "setupFilesAfterEnv": ["<rootDir>/setupTests.js"],
+  "setupTestFrameworkScriptFile": "<rootDir>/setupTests.js",
   "testMatch": [
     "/**/*.test.jsx",
     "common/static/common/js/components/**/?(*.)+(spec|test).js?(x)",
   ],
-  "testEnvironment": "jsdom",
   "transform": {
     "^.+\\.jsx$": "babel-jest",
     "^.+\\.js$": "babel-jest",