test(electron): switch to @kayahr/jest-electron-runner and fix electron unit tests

Author: hamudi-ahmed

config/electron-jest.config.js

@@ -1,21 +1,64 @@
+// these paths must be specified because otherwise typescript relies on the
+// "main" field in each package.json file, which points to the compiled JS and
+// we want to run Jest against the TS source
+const paths = {
+  // @bugsnag/core must resolve to source so that module-level singleton state
+  // (e.g. clone-client's onCloneCallbacks) is shared across jest.isolateModules
+  // boundaries. Without this, bundled dist creates duplicate state.
+  '@bugsnag/core': ['./packages/core/src/index.ts']
+}
+
+const moduleNameMapper = Object.fromEntries(
+  Object.entries(paths)
+    .map(([name, directories]) => [
+      `^${name}$`,
+      directories.map(directory => directory.replace('./', '<rootDir>/'))
+    ])
+)
+
+const defaultModuleConfig = {
+  preset: 'ts-jest/presets/js-with-ts',
+  moduleNameMapper,
+  transform: {
+    '^.+\\.m?[tj]sx?$': [
+      'ts-jest',
+      {
+        isolatedModules: true,
+        tsconfig: {
+          module: 'commonjs',
+          target: 'ES2019',
+          esModuleInterop: true,
+          allowSyntheticDefaultImports: true,
+          allowJs: true,
+          skipLibCheck: true,
+          jsx: 'react',
+          paths
+        }
+      }
+    ]
+  }
+}
+
 module.exports = {
   projects: [
     {
-      resolver: '<rootDir>/jest/node-exports-resolver',
+      ...defaultModuleConfig,
       setupFilesAfterEnv: ['<rootDir>/test/electron/setup.ts'],
       clearMocks: true,
       modulePathIgnorePatterns: ['.verdaccio', 'fixtures', 'examples'],
       displayName: 'electron main',
-      runner: '@jest-runner/electron/main',
+      runner: '@kayahr/jest-electron-runner/main',
+      testEnvironment: 'node',
       testMatch: ['**/test/**/*.test-main.ts']
     },
     {
-      resolver: '<rootDir>/jest/node-exports-resolver',
+      ...defaultModuleConfig,
       setupFilesAfterEnv: ['<rootDir>/test/electron/setup.ts'],
       clearMocks: true,
       modulePathIgnorePatterns: ['.verdaccio', 'fixtures', 'examples'],
       displayName: 'electron renderer',
-      runner: '@jest-runner/electron',
+      runner: '@kayahr/jest-electron-runner',
+      testEnvironment: '@kayahr/jest-electron-runner/environment',
       testMatch: ['**/test/**/*.test-renderer.ts']
     }
   ]