Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `package.json`:
  Upstream updated `jest`, moving its config in a separate file.
  This config was modified in glitch-soc, so the corresponding changes have
  been ported to `jest.config.js`

jest.config.js

@@ -0,0 +1,33 @@
+module.exports = {
+  'testEnvironment': 'jsdom',
+  'projects': [
+    '<rootDir>/app/javascript/mastodon',
+  ],
+  'testPathIgnorePatterns': [
+    '<rootDir>/node_modules/',
+    '<rootDir>/vendor/',
+    '<rootDir>/config/',
+    '<rootDir>/log/',
+    '<rootDir>/public/',
+    '<rootDir>/tmp/',
+    '<rootDir>/app/javascript/themes/',
+  ],
+  'setupFiles': [
+    'raf/polyfill',
+  ],
+  'setupFilesAfterEnv': [
+    '<rootDir>/app/javascript/mastodon/test_setup.js',
+  ],
+  'collectCoverageFrom': [
+    'app/javascript/mastodon/**/*.js',
+    '!app/javascript/mastodon/features/emoji/emoji_compressed.js',
+    '!app/javascript/mastodon/locales/locale-data/*.js',
+    '!app/javascript/mastodon/service_worker/entry.js',
+    '!app/javascript/mastodon/test_setup.js',
+  ],
+  'coverageDirectory': '<rootDir>/coverage',
+  'moduleDirectories': [
+    '<rootDir>/node_modules',
+    '<rootDir>/app/javascript',
+  ],
+};