next.js / test /development /app-dir /build-error-logs /build-error-logs.test.ts
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import { nextTestSetup } from 'e2e-utils'
import stripAnsi from 'strip-ansi'
describe('build-error-logs', () => {
const { next, isTurbopack, isRspack } = nextTestSetup({
files: __dirname,
})
it('should only log error a single time', async () => {
await next.fetch('/')
const output = stripAnsi(next.cliOutput)
expect(output).toContain('Module not found')
const moduleNotFoundLogs = output
.split('\n')
.filter((line) => line.includes('Module not found'))
if (isTurbopack) {
expect(moduleNotFoundLogs).toHaveLength(1)
} else if (isRspack) {
expect([2, 3]).toContain(moduleNotFoundLogs.length)
} else {
// FIXME: next with webpack still logs the same error too many times
expect(moduleNotFoundLogs).toHaveLength(3)
}
})
})