Init with yo typescript-react-lib

scripts/jest/config.cjs.js

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+const srcConfig = require('./config.src')
+
+module.exports = Object.assign({}, srcConfig, {
+  collectCoverage: false,
+  moduleNameMapper: {
+    '^../src$': `<rootDir>/dist/index.js`
+  }
+})

scripts/jest/config.es.js

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+const srcConfig = require('./config.src')
+
+module.exports = Object.assign({}, srcConfig, {
+  collectCoverage: false,
+  moduleNameMapper: {
+    '^../src$': `<rootDir>/dist/react-fiber-traverse.esm.js`
+  }
+})

scripts/jest/config.src.js

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+module.exports = {
+  collectCoverage: true,
+  collectCoverageFrom: ['src/*.{ts,tsx}'],
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'json'],
+  preset: 'ts-jest',
+  rootDir: process.cwd(),
+  roots: ['<rootDir>/test'],
+  setupFiles: ['<rootDir>/scripts/jest/setupEnvironment.ts'],
+  setupFilesAfterEnv: ['<rootDir>/scripts/jest/setupJest.ts'],
+  testMatch: ['<rootDir>/test/*.spec.ts?(x)'],
+  transform: { '^.+\\.(js|tsx?)$': 'ts-jest' }
+}

scripts/jest/config.umd.js

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+const srcConfig = require('./config.src')
+
+module.exports = Object.assign({}, srcConfig, {
+  collectCoverage: false,
+  moduleNameMapper: {
+    '^../src$': `<rootDir>/dist/react-fiber-traverse.umd.development.js`
+  }
+})

scripts/jest/config.umdprod.js

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+const srcConfig = require('./config.src')
+
+module.exports = Object.assign({}, srcConfig, {
+  collectCoverage: false,
+  moduleNameMapper: {
+    '^../src$': `<rootDir>/dist/react-fiber-traverse.umd.production.js`
+  }
+})

scripts/jest/setupEnvironment.ts

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+import { configure } from 'enzyme'
+import Adapter from 'enzyme-adapter-react-16'
+
+configure({ adapter: new Adapter() })

scripts/jest/setupJest.ts

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+import { createPrettyHtmlMatchers } from 'jest-prettyhtml-matchers'
+
+expect.extend(
+  createPrettyHtmlMatchers({
+    singleQuote: true,
+    sortAttributes: true,
+    wrapAttributes: true
+  })
+)