use createJestConfig fn

internal/config/src/index.js

@@ -1,3 +1,3 @@
 module.exports = {
-  getJestModuleMap: require("./jest").getJestModuleMap
-}
+  createJestTSConfig: require('./jest/config').createJestTSConfig,
+}

internal/config/src/jest/config.js

@@ -0,0 +1,34 @@
+const { getJestModuleMap } = require('./get-module-map')
+
+/**
+ * Create Config
+ * @param {import('jest').Config} Overrides.
+ * @param {object} getJestModuleMap options.
+ * @returns {import('jest').Config}
+ */
+const createJestTSConfig = (
+  { modulePathIgnorePatterns, testMatch, ...overridesToMerge } = {},
+  { packageRoot, skipPackageMap } = {}
+) => {
+  return {
+    moduleNameMapper: getJestModuleMap(packageRoot, skipPackageMap),
+    preset: 'ts-jest',
+    modulePathIgnorePatterns: [
+      '<rootDir>/dist/',
+      ...(modulePathIgnorePatterns || []),
+    ],
+    testEnvironment: 'node',
+    testMatch: ['**/?(*.)+(test).[jt]s?(x)', ...(testMatch || [])],
+    clearMocks: true,
+    globals: {
+      'ts-jest': {
+        isolatedModules: true,
+      },
+    },
+    ...(overridesToMerge || {}),
+  }
+}
+
+module.exports = {
+  createJestTSConfig,
+}

internal/config/src/jest/index.js → internal/config/src/jest/get-module-map.js

@@ -6,8 +6,10 @@ const doNotMapPackages = process.env.JEST_SKIP_PACKAGE_MAP === 'true'
 /**
  * Allows ts-jest to dynamically resolve packages so "build"
  */
-const getJestModuleMap = (packageRoot = '../../', skipPackageMap = doNotMapPackages) => {
-
+const getJestModuleMap = (
+  packageRoot = '../../',
+  skipPackageMap = doNotMapPackages
+) => {
   // get listing of packages in the mono repo
   const createLocation = (name) => {
     return `<rootDir>/./${name}/src/$1`
@@ -22,7 +24,7 @@ const getJestModuleMap = (packageRoot = '../../', skipPackageMap = doNotMapPacka
 
   return {
     '@/(.+)': '<rootdir>/../../src/$1',
-    ...(skipPackageMap ? {}: moduleNameMapper)
+    ...(skipPackageMap ? {} : moduleNameMapper),
   }
 }
 

packages/browser/jest.config.js

@@ -1,26 +1,9 @@
-const { getJestModuleMap } = require('@internal/config')
+const { createJestTSConfig } = require('@internal/config')
 
-module.exports = {
-  preset: 'ts-jest',
-  modulePathIgnorePatterns: [
-    '<rootDir>/dist/',
-    '<rootDir>/e2e-tests',
-    '<rootDir>/qa',
-  ],
-  testEnvironment: 'jsdom',
-  testMatch: ["**/?(*.)+(test).[jt]s?(x)"],
-  clearMocks: true,
-  testEnvironmentOptions: {
-    resources: 'usable',
-  },
-  moduleNameMapper: getJestModuleMap(),
+module.exports = createJestTSConfig({
+  modulePathIgnorePatterns: ['<rootDir>/e2e-tests', '<rootDir>/qa'],
   setupFilesAfterEnv: ['./jest.setup.js'],
-  globals: {
-    'ts-jest': {
-      isolatedModules: true,
-    },
-  },
-  reporters: ['default'],
+  testEnvironment: 'jsdom',
   coverageThreshold: {
     global: {
       branches: 80.91,
@@ -29,4 +12,4 @@ module.exports = {
       statements: 87.25,
     },
   },
-}
+})

packages/core-integration-tests/jest.config.js

@@ -1,15 +1,3 @@
-const { getJestModuleMap } = require('@internal/config')
+const { createJestTSConfig } = require('@internal/config')
 
-module.exports = {
-  moduleNameMapper: getJestModuleMap(),
-  preset: 'ts-jest',
-  modulePathIgnorePatterns: ['<rootDir>/dist/'],
-  testEnvironment: 'node',
-  testMatch: ['**/?(*.)+(test).[jt]s?(x)'],
-  clearMocks: true,
-  globals: {
-    'ts-jest': {
-      isolatedModules: true,
-    },
-  },
-}
+module.exports = createJestTSConfig()

packages/core/jest.config.js

@@ -1,19 +1,5 @@
-module.exports = {
-  preset: 'ts-jest',
-  modulePathIgnorePatterns: [
-    '<rootDir>/dist/',
-  ],
-  testEnvironment: 'node',
-  testMatch: ["**/?(*.)+(test).[jt]s?(x)"],
-  clearMocks: true,
-  setupFilesAfterEnv: ['./jest.setup.js'],
-  projects: [
-    "<rootDir>",
-    "<rootDir>/../core-integration-tests"
-  ],
-  globals: {
-    'ts-jest': {
-      isolatedModules: true,
-    },
-  },
-}
+const { createJestTSConfig } = require('@internal/config')
+
+module.exports = createJestTSConfig({
+  projects: ['<rootDir>', '<rootDir>/../core-integration-tests'],
+})

packages/node/jest.config.js

@@ -1,16 +1,3 @@
-const { getJestModuleMap } = require("@internal/config")
-module.exports = {
-  preset: 'ts-jest',
-  modulePathIgnorePatterns: [
-    '<rootDir>/dist/',
-  ],
-  testEnvironment: 'node',
-  testMatch: ["**/?(*.)+(test).[jt]s?(x)"],
-  clearMocks: true,
-  moduleNameMapper: getJestModuleMap(),
-  globals: {
-    'ts-jest': {
-      isolatedModules: true,
-    },
-  },
-}
+const { createJestTSConfig } = require('@internal/config')
+
+module.exports = createJestTSConfig()

packages/plugin-validation/jest.config.js

@@ -1,17 +1,3 @@
-const { getJestModuleMap } = require('@internal/config')
+const { createJestTSConfig } = require('@internal/config')
 
-module.exports = {
-  moduleNameMapper: getJestModuleMap(),
-  preset: 'ts-jest',
-  modulePathIgnorePatterns: [
-    '<rootDir>/dist/',
-  ],
-  testEnvironment: 'node',
-  testMatch: ["**/?(*.)+(test).[jt]s?(x)"],
-  clearMocks: true,
-  globals: {
-    'ts-jest': {
-      isolatedModules: true,
-    },
-  },
-}
+module.exports = createJestTSConfig()