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import { defineConfig, mergeConfig } from 'vitest/config'
import { externalizeDeps } from 'vite-plugin-externalize-deps'
import tsconfigPaths from 'vite-tsconfig-paths'
import dts from 'vite-plugin-dts'
import packageJson from './package.json'
import type { Options } from '@tanstack/config/vite'
function ensureImportFileExtension({
content,
extension,
}: {
content: string
extension: string
}) {
// replace e.g. `import { foo } from './foo'` with `import { foo } from './foo.js'`
content = content.replace(
/(im|ex)port\s[\w{}/*\s,]+from\s['"](?:\.\.?\/)+?[^.'"]+(?=['"];?)/gm,
`$&.${extension}`,
)
// replace e.g. `import('./foo')` with `import('./foo.js')`
content = content.replace(
/import\(['"](?:\.\.?\/)+?[^.'"]+(?=['"];?)/gm,
`$&.${extension}`,
)
return content
}
const config = defineConfig({
// fix from https://github.com/vitest-dev/vitest/issues/6992#issuecomment-2509408660
resolve: {
conditions: ['@tanstack/custom-condition'],
},
environments: {
ssr: {
resolve: {
conditions: ['@tanstack/custom-condition'],
},
},
},
test: {
name: packageJson.name,
dir: './src',
watch: false,
environment: 'jsdom',
setupFiles: ['src/test-setup.ts'],
coverage: { enabled: true, provider: 'istanbul', include: ['src/**/*'] },
typecheck: { enabled: true },
globals: true,
restoreMocks: true,
},
})
// copy from @tanstack/config/vite with changes:
// - build - lib - fileName: [name.mjs]
// - rollup - output - preserveModulesRoot: src
export const tanstackViteConfig = (options: Options) => {
const outDir = options.outDir ?? 'dist'
const cjs = options.cjs ?? true
return defineConfig({
plugins: [
externalizeDeps({ include: options.externalDeps ?? [] }),
tsconfigPaths({
projects: options.tsconfigPath ? [options.tsconfigPath] : undefined,
}),
dts({
outDir,
entryRoot: options.srcDir,
include: options.srcDir,
exclude: options.exclude,
tsconfigPath: options.tsconfigPath,
compilerOptions: {
module: 99, // ESNext
declarationMap: false,
},
beforeWriteFile: (filePath, content) => {
return {
filePath,
content: ensureImportFileExtension({ content, extension: 'js' }),
}
},
afterDiagnostic: (diagnostics) => {
if (diagnostics.length > 0) {
console.error('Please fix the above type errors')
process.exit(1)
}
},
}),
],
build: {
outDir,
minify: false,
sourcemap: true,
lib: {
entry: options.entry,
formats: cjs ? ['es', 'cjs'] : ['es'],
fileName: () => '[name].mjs',
},
rollupOptions: {
output: {
preserveModules: true,
preserveModulesRoot: 'src',
},
},
},
})
}
export default mergeConfig(
config,
tanstackViteConfig({
cjs: false,
entry: ['./src/index.ts'],
exclude: ['./src/__tests__'],
srcDir: './src',
tsconfigPath: './tsconfig.prod.json',
}),
)
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