refactor(@vant/cli): migrate to ESM package

packages/vant-cli/cjs/jest.config.cjs

@@ -0,0 +1,47 @@
+const { join } = require('path');
+const { existsSync } = require('fs');
+const { ROOT } = require('./shared.cjs');
+
+const JEST_SETUP_FILE = join(__dirname, 'jest.setup.cjs');
+const JEST_FILE_MOCK_FILE = join(__dirname, 'jest.file-mock.cjs');
+const JEST_STYLE_MOCK_FILE = join(__dirname, 'jest.style-mock.cjs');
+
+const DEFAULT_CONFIG = {
+  testEnvironment: 'jsdom',
+  moduleNameMapper: {
+    '\\.(css|less|scss)$': JEST_STYLE_MOCK_FILE,
+    '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
+      JEST_FILE_MOCK_FILE,
+  },
+  setupFilesAfterEnv: [JEST_SETUP_FILE],
+  moduleFileExtensions: ['js', 'jsx', 'vue', 'ts', 'tsx'],
+  transform: {
+    '\\.(vue)$': 'vue3-jest',
+    '\\.(js|jsx|ts|tsx)$': 'babel-jest',
+  },
+  transformIgnorePatterns: ['/node_modules/(?!(@vant/cli))/'],
+  snapshotSerializers: ['jest-serializer-html'],
+  collectCoverage: true,
+  collectCoverageFrom: [
+    'src/**/*.{js,jsx,ts,tsx,vue}',
+    '!**/demo/**',
+    '!**/test/**',
+  ],
+  coverageReporters: ['html', 'lcov', 'text-summary'],
+  coverageDirectory: './test/coverage',
+};
+
+function readRootConfig() {
+  const ROOT_CONFIG_PATH = join(ROOT, 'jest.config.js');
+
+  if (existsSync(ROOT_CONFIG_PATH)) {
+    return require(ROOT_CONFIG_PATH);
+  }
+
+  return {};
+}
+
+module.exports = {
+  ...DEFAULT_CONFIG,
+  ...readRootConfig(),
+};