chore: [arco-scripts] add test case

jest.config.ts

@@ -0,0 +1,13 @@
+import type { Config } from '@jest/types';
+
+const config: Config.InitialOptions = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  collectCoverage: true,
+  collectCoverageFrom: ['packages/*/src/*.{j,t}s'],
+  testRegex: '.*\\.test\\.(j|t)sx?$',
+  testPathIgnorePatterns: ['/node_modules/'],
+  transformIgnorePatterns: ['node_modules/[^/]+?/(?!(es|node_modules)/)'],
+};
+
+export default config;

package.json

@@ -18,6 +18,7 @@
     "@types/gulp": "^4.0.8",
     "@types/gulp-if": "^0.0.33",
     "@types/gulp-plumber": "^0.0.32",
+    "@types/jest": "^27.4.1",
     "@types/merge-stream": "^1.1.2",
     "@types/node": "^15.6.0",
     "@types/through2": "^2.0.36",
@@ -35,11 +36,14 @@
     "eslint-plugin-typescript": "^0.14.0",
     "fs-extra": "^9.0.0",
     "husky": "^4.3.0",
+    "jest": "^27.0.6",
     "lerna": "^3.21.0",
     "lint-staged": "^10.2.4",
     "prettier": "^2.0.5",
     "stylelint": "^13.4.1",
     "stylelint-config-standard": "^20.0.0",
+    "ts-jest": "^27.0.3",
+    "ts-node": "^10.7.0",
     "typescript": "^4.4.3"
   },
   "lint-staged": {