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vitest.dev
test
testing-tools
vite
fix(coverage): v8 to ignore Vite's generated cjs import helpers (#8718)
Co-authored-by: Ari Perkkiö <ari.perkkio@gmail.com>
authored by
Bill Collins
Ari Perkkiö
and committed by
GitHub
(Oct 16, 2025, 2:59 PM +0300)
35816fe8
bc7c20de
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+8
pnpm-lock.yaml
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pnpm-lock.yaml
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'@vitest/browser-playwright':
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specifier: workspace:*
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version: link:../../packages/browser-playwright
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'@vitest/cjs-lib':
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specifier: file:../browser/cjs-lib
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version: file:test/browser/cjs-lib
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'@vitest/coverage-istanbul':
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specifier: workspace:*
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version: link:../../packages/coverage-istanbul
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peerDependencies:
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vite: ^7.1.5
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vue: ^3.2.25
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'@vitest/cjs-lib@file:test/browser/cjs-lib':
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resolution: {directory: test/browser/cjs-lib, type: directory}
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'@vitest/eslint-plugin@1.3.12':
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resolution: {integrity: sha512-cSEyUYGj8j8SLqKrzN7BlfsJ3wG67eRT25819PXuyoSBogLXiyagdKx4MHWHV1zv+EEuyMXsEKkBEKzXpxyBrg==}
···
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'@rolldown/pluginutils': 1.0.0-beta.29
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vite: 7.1.5(@types/node@22.18.6)(jiti@2.5.1)(lightningcss@1.30.1)(sass-embedded@1.93.0)(sass@1.93.0)(terser@5.44.0)(tsx@4.20.5)(yaml@2.8.1)
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vue: 3.5.21(typescript@5.9.2)
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'@vitest/cjs-lib@file:test/browser/cjs-lib': {}
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'@vitest/eslint-plugin@1.3.12(eslint@9.37.0(jiti@2.5.1))(typescript@5.9.2)(vitest@packages+vitest)':
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dependencies:
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test/coverage-test/package.json
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test/coverage-test/package.json
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"@types/istanbul-lib-report": "catalog:",
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"@vitejs/plugin-vue": "latest",
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"@vitest/browser-playwright": "workspace:*",
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"@vitest/cjs-lib": "file:../browser/cjs-lib",
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"@vitest/coverage-istanbul": "workspace:*",
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"@vitest/coverage-v8": "workspace:*",
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"@vitest/web-worker": "workspace:*",
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test/coverage-test/vitest.config.ts
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test/coverage-test/vitest.config.ts
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const CUSTOM_TESTS = 'test/**.custom.test.ts'
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const UNIT_TESTS = 'test/**.unit.test.ts'
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const BROWSER_TESTS = 'test/**.browser.test.ts'
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const FIXTURES = '**/fixtures/**'
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const config = defineConfig({
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test: {
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UNIT_TESTS,
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CUSTOM_TESTS,
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BROWSER_TESTS,
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FIXTURES,
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],
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},
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},
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UNIT_TESTS,
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CUSTOM_TESTS,
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BROWSER_TESTS,
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FIXTURES,
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],
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},
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},
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name: { label: 'custom', color: 'yellow' },
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env: { COVERAGE_PROVIDER: 'custom' },
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include: [CUSTOM_TESTS],
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exclude: [FIXTURES],
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},
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},
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···
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'**/vue.test.ts',
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'**/in-source.test.ts',
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'**/query-param-transforms.test.ts',
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'**/test/cjs-dependency.test.ts',
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],
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exclude: [FIXTURES],
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},
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},
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{
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'**/vue.test.ts',
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'**/in-source.test.ts',
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'**/query-param-transforms.test.ts',
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'**/test/cjs-dependency.test.ts',
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],
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exclude: [FIXTURES],
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},
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},
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+14
packages/coverage-v8/src/provider.ts
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packages/coverage-v8/src/provider.ts
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return true
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}
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// CJS imports as ternaries - e.g.
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// const React = __vite__cjsImport0_react.__esModule ? __vite__cjsImport0_react.default : __vite__cjsImport0_react;
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if (
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type === 'branch'
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&& node.type === 'ConditionalExpression'
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&& node.test.type === 'MemberExpression'
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&& node.test.object.type === 'Identifier'
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&& node.test.object.name.startsWith('__vite__cjsImport')
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&& node.test.property.type === 'Identifier'
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&& node.test.property.name === '__esModule'
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) {
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return true
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}
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// in-source test with "if (import.meta.vitest)"
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if (
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(type === 'branch' || type === 'statement')
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test/coverage-test/test/cjs-dependency.test.ts
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test/coverage-test/test/cjs-dependency.test.ts
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import { fileURLToPath } from 'node:url'
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import { expect } from 'vitest'
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import { readCoverageMap, runVitest, test } from '../utils'
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test('excludes Vite transforms done for CJS dependency', async () => {
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await runVitest({
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include: ['fixtures/test/cjs-dependency.test.ts'],
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coverage: {
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reporter: 'json',
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},
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}, undefined, {
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cacheDir: fileURLToPath(new URL('./node_modules/.vite', import.meta.url)),
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optimizeDeps: { include: ['@vitest/cjs-lib', '/Users/ari/Git/vitest/test/browser/cjs-lib'] },
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})
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const coverageMap = await readCoverageMap()
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const files = coverageMap.files()
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expect(files).toMatchInlineSnapshot(`
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[
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"<process-cwd>/fixtures/src/cjs-dependency.ts",
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]
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`)
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const fileCoverage = coverageMap.fileCoverageFor('<process-cwd>/fixtures/src/cjs-dependency.ts')
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// There should be 0 branches (#8717)
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expect(Object.keys(fileCoverage.b)).toHaveLength(0)
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expect(Object.keys(fileCoverage.branchMap)).toHaveLength(0)
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})
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test/coverage-test/fixtures/src/cjs-dependency.ts
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test/coverage-test/fixtures/src/cjs-dependency.ts