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index.test.js
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/
index.test.js
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/* eslint-env jest */
import path from 'path'
import fs from 'fs-extra'
import {
runNextCommand,
launchApp,
findPort,
killApp,
waitFor,
nextBuild,
nextLint,
check,
findAllTelemetryEvents,
} from 'next-test-utils'
const appDir = path.join(__dirname, '..')
describe('Telemetry CLI', () => {
it('can print telemetry status', async () => {
const { stdout } = await runNextCommand(['telemetry'], {
stdout: true,
})
expect(stdout).toMatch(/Status: .*/)
})
it('can enable telemetry with flag', async () => {
const { stdout } = await runNextCommand(['telemetry', '--enable'], {
stdout: true,
})
expect(stdout).toMatch(/Success/)
expect(stdout).toMatch(/Status: Enabled/)
})
it('can disable telemetry with flag', async () => {
const { stdout } = await runNextCommand(['telemetry', '--disable'], {
stdout: true,
})
expect(stdout).toMatch(/Your preference has been saved/)
expect(stdout).toMatch(/Status: Disabled/)
})
it('can enable telemetry without flag', async () => {
const { stdout } = await runNextCommand(['telemetry', 'enable'], {
stdout: true,
})
expect(stdout).toMatch(/Success/)
expect(stdout).toMatch(/Status: Enabled/)
})
it('can re-enable telemetry', async () => {
const { stdout } = await runNextCommand(['telemetry', 'enable'], {
stdout: true,
})
expect(stdout).toMatch(/Success/)
expect(stdout).toMatch(/Status: Enabled/)
})
it('can disable telemetry without flag', async () => {
const { stdout } = await runNextCommand(['telemetry', 'disable'], {
stdout: true,
})
expect(stdout).toMatch(/Your preference has been saved/)
expect(stdout).toMatch(/Status: Disabled/)
})
it('can re-disable telemetry', async () => {
const { stdout } = await runNextCommand(['telemetry', 'disable'], {
stdout: true,
})
expect(stdout).toMatch(/already disabled/)
expect(stdout).toMatch(/Status: Disabled/)
})
it('detects isSrcDir dir correctly for `next build`', async () => {
// must clear cache for GSSP imports to be detected correctly
await fs.remove(path.join(appDir, '.next'))
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
expect(stderr).toMatch(/isSrcDir.*?false/)
expect(stderr).toMatch(/package.*?"fs"/)
expect(stderr).toMatch(/package.*?"path"/)
expect(stderr).toMatch(/package.*?"http"/)
expect(stderr).toMatch(/NEXT_PACKAGE_USED_IN_GET_SERVER_SIDE_PROPS/)
await fs.move(path.join(appDir, 'pages'), path.join(appDir, 'src/pages'))
const { stderr: stderr2 } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await fs.move(path.join(appDir, 'src/pages'), path.join(appDir, 'pages'))
expect(stderr2).toMatch(/isSrcDir.*?true/)
})
it('emits event when swc fails to load', async () => {
await fs.remove(path.join(appDir, '.next'))
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
// block swc from loading
NODE_OPTIONS: '--no-addons',
NEXT_TELEMETRY_DEBUG: 1,
},
})
expect(stderr).toMatch(/NEXT_SWC_LOAD_FAILURE/)
expect(stderr).toContain(
`"nextVersion": "${require('next/package.json').version}"`
)
expect(stderr).toContain(`"arch": "${process.arch}"`)
expect(stderr).toContain(`"platform": "${process.platform}"`)
expect(stderr).toContain(`"nodeVersion": "${process.versions.node}"`)
})
it('logs completed `next build` with warnings', async () => {
await fs.rename(
path.join(appDir, 'pages', 'warning.skip'),
path.join(appDir, 'pages', 'warning.js')
)
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await fs.rename(
path.join(appDir, 'pages', 'warning.js'),
path.join(appDir, 'pages', 'warning.skip')
)
expect(stderr).toMatch(/Compiled with warnings/)
expect(stderr).toMatch(/NEXT_BUILD_COMPLETED/)
})
it('detects tests correctly for `next build`', async () => {
await fs.rename(
path.join(appDir, 'pages', 'hello.test.skip'),
path.join(appDir, 'pages', 'hello.test.js')
)
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await fs.rename(
path.join(appDir, 'pages', 'hello.test.js'),
path.join(appDir, 'pages', 'hello.test.skip')
)
const event1 = /NEXT_BUILD_COMPLETED[\s\S]+?{([\s\S]+?)}/.exec(stderr).pop()
expect(event1).toMatch(/hasDunderPages.*?true/)
expect(event1).toMatch(/hasTestPages.*?true/)
const event2 = /NEXT_BUILD_OPTIMIZED[\s\S]+?{([\s\S]+?)}/.exec(stderr).pop()
expect(event2).toMatch(/hasDunderPages.*?true/)
expect(event2).toMatch(/hasTestPages.*?true/)
})
it('detects correct cli session defaults', async () => {
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
const event = /NEXT_CLI_SESSION_STARTED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event).toMatch(/"hasNextConfig": false/)
expect(event).toMatch(/"buildTarget": "default"/)
expect(event).toMatch(/"hasWebpackConfig": false/)
expect(event).toMatch(/"hasBabelConfig": false/)
})
it('cli session: babel tooling config', async () => {
await fs.rename(
path.join(appDir, '.babelrc.default'),
path.join(appDir, '.babelrc')
)
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await fs.rename(
path.join(appDir, '.babelrc'),
path.join(appDir, '.babelrc.default')
)
const event = /NEXT_CLI_SESSION_STARTED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event).toMatch(/"hasNextConfig": false/)
expect(event).toMatch(/"buildTarget": "default"/)
expect(event).toMatch(/"hasWebpackConfig": false/)
expect(event).toMatch(/"hasBabelConfig": false/)
})
it('cli session: custom babel config (plugin)', async () => {
await fs.rename(
path.join(appDir, '.babelrc.plugin'),
path.join(appDir, '.babelrc')
)
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await fs.rename(
path.join(appDir, '.babelrc'),
path.join(appDir, '.babelrc.plugin')
)
const event = /NEXT_CLI_SESSION_STARTED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event).toMatch(/"hasNextConfig": false/)
expect(event).toMatch(/"buildTarget": "default"/)
expect(event).toMatch(/"hasWebpackConfig": false/)
expect(event).toMatch(/"hasBabelConfig": true/)
})
it('cli session: package.json custom babel config (plugin)', async () => {
await fs.rename(
path.join(appDir, 'package.babel'),
path.join(appDir, 'package.json')
)
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await fs.rename(
path.join(appDir, 'package.json'),
path.join(appDir, 'package.babel')
)
const event = /NEXT_CLI_SESSION_STARTED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event).toMatch(/"hasNextConfig": false/)
expect(event).toMatch(/"buildTarget": "default"/)
expect(event).toMatch(/"hasWebpackConfig": false/)
expect(event).toMatch(/"hasBabelConfig": true/)
})
it('cli session: custom babel config (preset)', async () => {
await fs.rename(
path.join(appDir, '.babelrc.preset'),
path.join(appDir, '.babelrc')
)
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await fs.rename(
path.join(appDir, '.babelrc'),
path.join(appDir, '.babelrc.preset')
)
const event = /NEXT_CLI_SESSION_STARTED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event).toMatch(/"hasNextConfig": false/)
expect(event).toMatch(/"buildTarget": "default"/)
expect(event).toMatch(/"hasWebpackConfig": false/)
expect(event).toMatch(/"hasBabelConfig": true/)
})
it('cli session: next config with webpack', async () => {
await fs.rename(
path.join(appDir, 'next.config.webpack'),
path.join(appDir, 'next.config.js')
)
const { stderr } = await runNextCommand(['build', appDir], {
stderr: true,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await fs.rename(
path.join(appDir, 'next.config.js'),
path.join(appDir, 'next.config.webpack')
)
const event = /NEXT_CLI_SESSION_STARTED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event).toMatch(/"hasNextConfig": true/)
expect(event).toMatch(/"buildTarget": "default"/)
expect(event).toMatch(/"hasWebpackConfig": true/)
expect(event).toMatch(/"hasBabelConfig": false/)
})
it('detect static 404 correctly for `next build`', async () => {
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
const event1 = /NEXT_BUILD_OPTIMIZED[\s\S]+?{([\s\S]+?)}/.exec(stderr).pop()
expect(event1).toMatch(/hasStatic404.*?true/)
})
it('detect page counts correctly for `next build`', async () => {
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
const event1 = /NEXT_BUILD_OPTIMIZED[\s\S]+?{([\s\S]+?)}/.exec(stderr).pop()
expect(event1).toMatch(/"staticPropsPageCount": 2/)
expect(event1).toMatch(/"serverPropsPageCount": 2/)
expect(event1).toMatch(/"ssrPageCount": 3/)
expect(event1).toMatch(/"staticPageCount": 4/)
expect(event1).toMatch(/"totalPageCount": 11/)
expect(event1).toMatch(/"totalAppPagesCount": 0/)
expect(event1).toMatch(/"staticAppPagesCount": 0/)
expect(event1).toMatch(/"serverAppPagesCount": 0/)
expect(event1).toMatch(/"edgeRuntimeAppCount": 0/)
expect(event1).toMatch(/"edgeRuntimePagesCount": 2/)
})
it('detects isSrcDir dir correctly for `next dev`', async () => {
let port = await findPort()
let stderr = ''
const handleStderr = (msg) => {
stderr += msg
}
let app = await launchApp(appDir, port, {
onStderr: handleStderr,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await waitFor(1000)
await killApp(app)
expect(stderr).toMatch(/isSrcDir.*?false/)
await fs.move(path.join(appDir, 'pages'), path.join(appDir, 'src/pages'))
stderr = ''
port = await findPort()
app = await launchApp(appDir, port, {
onStderr: handleStderr,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await waitFor(1000)
await killApp(app)
await fs.move(path.join(appDir, 'src/pages'), path.join(appDir, 'pages'))
expect(stderr).toMatch(/isSrcDir.*?true/)
})
const setupAppDir = async () => {
await fs.writeFile(
path.join(__dirname, '../next.config.js'),
'module.exports = { experimental: { appDir: true } }'
)
await fs.mkdir(path.join(__dirname, '../app'))
await fs.writeFile(
path.join(__dirname, '../app/layout.js'),
`
export default function RootLayout({ children }) {
return <html>
<head/>
<body>{children}</body>
</html>
}
`
)
await fs.ensureFile(path.join(__dirname, '../app/hello/page.js'))
await fs.writeFile(
path.join(__dirname, '../app/hello/page.js'),
'export default function Page() { return "hello world" }'
)
return async function teardownAppDir() {
await fs.remove(path.join(__dirname, '../app'))
await fs.remove(path.join(__dirname, '../next.config.js'))
}
}
it('detects --turbo correctly for `next dev`', async () => {
let port = await findPort()
let stderr = ''
const teardown = await setupAppDir()
try {
const handleStderr = (msg) => {
stderr += msg
}
let app = await launchApp(appDir, port, {
onStderr: handleStderr,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
turbo: true,
})
await waitFor(1000)
if (app) {
await killApp(app)
}
const event1 = /NEXT_CLI_SESSION_STARTED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event1).toMatch(/"pagesDir": true/)
expect(event1).toMatch(/"turboFlag": true/)
} finally {
await teardown()
}
})
it('detects --turbo correctly for `next dev` stopped', async () => {
let port = await findPort()
let stderr = ''
const teardown = await setupAppDir()
try {
const handleStderr = (msg) => {
stderr += msg
}
let app = await launchApp(appDir, port, {
onStderr: handleStderr,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
turbo: true,
})
if (app) {
await killApp(app)
}
await check(() => stderr, /NEXT_CLI_SESSION_STOPPED/)
const event1 = /NEXT_CLI_SESSION_STOPPED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event1).toMatch(/"pagesDir": true/)
expect(event1).toMatch(/"turboFlag": true/)
} finally {
await teardown()
}
})
it('detects correctly for `next dev` stopped (no turbo)', async () => {
let port = await findPort()
let stderr = ''
const teardown = await setupAppDir()
try {
const handleStderr = (msg) => {
stderr += msg
}
let app = await launchApp(appDir, port, {
onStderr: handleStderr,
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await check(() => stderr, /NEXT_CLI_SESSION_STARTED/)
if (app) {
await killApp(app)
}
await check(() => stderr, /NEXT_CLI_SESSION_STOPPED/)
const event1 = /NEXT_CLI_SESSION_STOPPED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event1).toMatch(/"turboFlag": false/)
expect(event1).toMatch(/"pagesDir": true/)
expect(event1).toMatch(/"appDir": true/)
} finally {
await teardown()
}
})
it('should detect app page counts', async () => {
const teardown = await setupAppDir()
try {
await fs.ensureFile(path.join(__dirname, '../app/ssr/page.js'))
await fs.writeFile(
path.join(__dirname, '../app/ssr/page.js'),
`
export const revalidate = 0
export default function Page() {
return <p>ssr page</p>
}
`
)
await fs.ensureFile(path.join(__dirname, '../app/edge-ssr/page.js'))
await fs.writeFile(
path.join(__dirname, '../app/edge-ssr/page.js'),
`
export const runtime = 'experimental-edge'
export default function Page() {
return <p>edge-ssr page</p>
}
`
)
await fs.ensureFile(path.join(__dirname, '../app/app-ssg/[slug]/page.js'))
await fs.writeFile(
path.join(__dirname, '../app/app-ssg/[slug]/page.js'),
`
export function generateStaticParams() {
return [
{ slug: 'post-1' },
{ slug: 'post-2' },
]
}
export default function Page() {
return <p>ssg page</p>
}
`
)
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
const event1 = /NEXT_BUILD_OPTIMIZED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event1).toMatch(/"staticPropsPageCount": 2/)
expect(event1).toMatch(/"serverPropsPageCount": 2/)
expect(event1).toMatch(/"ssrPageCount": 3/)
expect(event1).toMatch(/"staticPageCount": 4/)
expect(event1).toMatch(/"totalPageCount": 11/)
expect(event1).toMatch(/"totalAppPagesCount": 4/)
expect(event1).toMatch(/"serverAppPagesCount": 2/)
expect(event1).toMatch(/"edgeRuntimeAppCount": 1/)
expect(event1).toMatch(/"edgeRuntimePagesCount": 2/)
const event2 = /NEXT_BUILD_COMPLETED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event2).toMatch(/"totalAppPagesCount": 4/)
} finally {
await teardown()
}
})
it('detect reportWebVitals correctly for `next build`', async () => {
// Case 1: When _app.js does not exist.
let build = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
let event1 = /NEXT_BUILD_OPTIMIZED[\s\S]+?{([\s\S]+?)}/
.exec(build.stderr)
.pop()
expect(event1).toMatch(/hasReportWebVitals.*?false/)
// Case 2: When _app.js exist with reportWebVitals function.
await fs.utimes(
path.join(appDir, 'pages', '_app_withreportwebvitals.empty'),
new Date(),
new Date()
)
await fs.rename(
path.join(appDir, 'pages', '_app_withreportwebvitals.empty'),
path.join(appDir, 'pages', '_app.js')
)
build = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.rename(
path.join(appDir, 'pages', '_app.js'),
path.join(appDir, 'pages', '_app_withreportwebvitals.empty')
)
event1 = /NEXT_BUILD_OPTIMIZED[\s\S]+?{([\s\S]+?)}/.exec(build.stderr).pop()
expect(event1).toMatch(/hasReportWebVitals.*?true/)
// Case 3: When _app.js exist without reportWebVitals function.
await fs.utimes(
path.join(appDir, 'pages', '_app_withoutreportwebvitals.empty'),
new Date(),
new Date()
)
await fs.rename(
path.join(appDir, 'pages', '_app_withoutreportwebvitals.empty'),
path.join(appDir, 'pages', '_app.js')
)
build = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.rename(
path.join(appDir, 'pages', '_app.js'),
path.join(appDir, 'pages', '_app_withoutreportwebvitals.empty')
)
event1 = /NEXT_BUILD_OPTIMIZED[\s\S]+?{([\s\S]+?)}/.exec(build.stderr).pop()
expect(event1).toMatch(/hasReportWebVitals.*?false/)
})
it('detects rewrites, headers, and redirects for next build', async () => {
await fs.rename(
path.join(appDir, 'next.config.custom-routes'),
path.join(appDir, 'next.config.js')
)
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.rename(
path.join(appDir, 'next.config.js'),
path.join(appDir, 'next.config.custom-routes')
)
const event1 = /NEXT_BUILD_OPTIMIZED[\s\S]+?{([\s\S]+?)}/.exec(stderr).pop()
expect(event1).toMatch(/"headersCount": 1/)
expect(event1).toMatch(/"rewritesCount": 2/)
expect(event1).toMatch(/"redirectsCount": 1/)
expect(event1).toMatch(/"middlewareCount": 0/)
})
it('detects i18n and image configs for session start', async () => {
await fs.rename(
path.join(appDir, 'next.config.i18n-images'),
path.join(appDir, 'next.config.js')
)
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.rename(
path.join(appDir, 'next.config.js'),
path.join(appDir, 'next.config.i18n-images')
)
const event1 = /NEXT_CLI_SESSION_STARTED[\s\S]+?{([\s\S]+?)}/
.exec(stderr)
.pop()
expect(event1).toMatch(/"i18nEnabled": true/)
expect(event1).toMatch(/"locales": "en,nl,fr"/)
expect(event1).toMatch(/"localeDomainsCount": 2/)
expect(event1).toMatch(/"localeDetectionEnabled": true/)
expect(event1).toMatch(/"imageEnabled": true/)
expect(event1).toMatch(/"imageFutureEnabled": true/)
expect(event1).toMatch(/"imageDomainsCount": 2/)
expect(event1).toMatch(/"imageRemotePatternsCount": 1/)
expect(event1).toMatch(/"imageSizes": "64,128,256,512,1024"/)
expect(event1).toMatch(/"imageFormats": "image\/avif,image\/webp"/)
expect(event1).toMatch(/"trailingSlashEnabled": false/)
expect(event1).toMatch(/"reactStrictMode": false/)
expect(event1).toMatch(/"turboFlag": false/)
expect(event1).toMatch(/"pagesDir": true/)
expect(event1).toMatch(/"appDir": false/)
await fs.rename(
path.join(appDir, 'next.config.i18n-images'),
path.join(appDir, 'next.config.js')
)
let stderr2 = ''
let app = await launchApp(appDir, await findPort(), {
onStderr(msg) {
stderr2 += msg || ''
},
env: {
NEXT_TELEMETRY_DEBUG: 1,
},
})
await waitFor(1000)
await killApp(app)
await fs.rename(
path.join(appDir, 'next.config.js'),
path.join(appDir, 'next.config.i18n-images')
)
const event2 = /NEXT_CLI_SESSION_STARTED[\s\S]+?{([\s\S]+?)}/
.exec(stderr2)
.pop()
expect(event2).toMatch(/"i18nEnabled": true/)
expect(event2).toMatch(/"locales": "en,nl,fr"/)
expect(event2).toMatch(/"localeDomainsCount": 2/)
expect(event2).toMatch(/"localeDetectionEnabled": true/)
expect(event2).toMatch(/"imageDomainsCount": 2/)
expect(event2).toMatch(/"imageRemotePatternsCount": 1/)
expect(event2).toMatch(/"imageSizes": "64,128,256,512,1024"/)
expect(event2).toMatch(/"trailingSlashEnabled": false/)
expect(event2).toMatch(/"reactStrictMode": false/)
})
it('emits telemetry for lint during build', async () => {
await fs.writeFile(
path.join(appDir, '.eslintrc'),
`{ "root": true, "extends": "next" }`
)
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.remove(path.join(appDir, '.eslintrc'))
const event1 = /NEXT_LINT_CHECK_COMPLETED[\s\S]+?{([\s\S}]+?)^}/m
.exec(stderr)
.pop()
expect(event1).toMatch(/"durationInSeconds": [\d]{1,}/)
expect(event1).toMatch(/"eslintVersion": ".*?\..*?\..*?"/)
expect(event1).toMatch(/"lintedFilesCount": [\d]{1,}/)
expect(event1).toMatch(/"lintFix": false/)
expect(event1).toMatch(/"buildLint": true/)
expect(event1).toMatch(/"nextEslintPluginVersion": ".*?\..*?\..*?"/)
expect(event1).toMatch(/"nextEslintPluginErrorsCount": \d{1,}/)
expect(event1).toMatch(/"nextEslintPluginWarningsCount": \d{1,}/)
expect(event1).toMatch(`"nextRulesEnabled": {`)
expect(event1).toMatch(/"@next\/next\/.+?": "(off|warn|error)"/)
const featureUsageEvents = findAllTelemetryEvents(
stderr,
'NEXT_BUILD_FEATURE_USAGE'
)
expect(featureUsageEvents).toContainEqual({
featureName: 'build-lint',
invocationCount: 1,
})
})
it(`emits telemetry for lint during build when '--no-lint' is specified`, async () => {
const { stderr } = await nextBuild(appDir, ['--no-lint'], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
const events = findAllTelemetryEvents(stderr, 'NEXT_BUILD_FEATURE_USAGE')
expect(events).toContainEqual({
featureName: 'build-lint',
invocationCount: 0,
})
})
it(`emits telemetry for lint during build when 'ignoreDuringBuilds' is specified`, async () => {
const nextConfig = path.join(appDir, 'next.config.js')
await fs.writeFile(
nextConfig,
`module.exports = { eslint: { ignoreDuringBuilds: true } }`
)
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.remove(nextConfig)
const events = findAllTelemetryEvents(stderr, 'NEXT_BUILD_FEATURE_USAGE')
expect(events).toContainEqual({
featureName: 'build-lint',
invocationCount: 0,
})
})
it('emits telemetry for `next lint`', async () => {
await fs.writeFile(
path.join(appDir, '.eslintrc'),
`{ "root": true, "extends": "next" }`
)
const { stderr } = await nextLint(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.remove(path.join(appDir, '.eslintrc'))
const event1 = /NEXT_LINT_CHECK_COMPLETED[\s\S]+?{([\s\S]+?)^}/m
.exec(stderr)
.pop()
expect(event1).toMatch(/"durationInSeconds": [\d]{1,}/)
expect(event1).toMatch(/"eslintVersion": ".*?\..*?\..*?"/)
expect(event1).toMatch(/"lintedFilesCount": [\d]{1,}/)
expect(event1).toMatch(/"lintFix": false/)
expect(event1).toMatch(/"buildLint": false/)
expect(event1).toMatch(/"nextEslintPluginVersion": ".*?\..*?\..*?"/)
expect(event1).toMatch(/"nextEslintPluginErrorsCount": \d{1,}/)
expect(event1).toMatch(/"nextEslintPluginWarningsCount": \d{1,}/)
expect(event1).toMatch(`"nextRulesEnabled": {`)
expect(event1).toMatch(/"@next\/next\/.+?": "(off|warn|error)"/)
})
it('emits telemery for usage of optimizeFonts, image, script & dynamic', async () => {
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
const featureUsageEvents = findAllTelemetryEvents(
stderr,
'NEXT_BUILD_FEATURE_USAGE'
)
expect(featureUsageEvents).toEqual(
expect.arrayContaining([
{
featureName: 'optimizeFonts',
invocationCount: 1,
},
{
featureName: 'next/image',
invocationCount: 2,
},
{
featureName: 'next/script',
invocationCount: 1,
},
{
featureName: 'next/dynamic',
invocationCount: 1,
},
])
)
})
it('emits telemetry for usage of swc', async () => {
await fs.remove(path.join(appDir, 'next.config.js'))
await fs.remove(path.join(appDir, 'jsconfig.json'))
await fs.rename(
path.join(appDir, 'next.config.swc'),
path.join(appDir, 'next.config.js')
)
await fs.rename(
path.join(appDir, 'jsconfig.swc'),
path.join(appDir, 'jsconfig.json')
)
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.rename(
path.join(appDir, 'next.config.js'),
path.join(appDir, 'next.config.swc')
)
await fs.rename(
path.join(appDir, 'jsconfig.json'),
path.join(appDir, 'jsconfig.swc')
)
const featureUsageEvents = findAllTelemetryEvents(
stderr,
'NEXT_BUILD_FEATURE_USAGE'
)
expect(featureUsageEvents).toEqual(
expect.arrayContaining([
{
featureName: 'swcLoader',
invocationCount: 1,
},
{
featureName: 'swcMinify',
invocationCount: 1,
},
{
featureName: 'swcRelay',
invocationCount: 1,
},
{
featureName: 'swcStyledComponents',
invocationCount: 1,
},
{
featureName: 'swcReactRemoveProperties',
invocationCount: 1,
},
{
featureName: 'swcExperimentalDecorators',
invocationCount: 1,
},
{
featureName: 'swcRemoveConsole',
invocationCount: 1,
},
{
featureName: 'swcImportSource',
invocationCount: 0,
},
])
)
})
it('emits telemetry for usage of `optimizeCss`', async () => {
await fs.rename(
path.join(appDir, 'next.config.optimize-css'),
path.join(appDir, 'next.config.js')
)
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.rename(
path.join(appDir, 'next.config.js'),
path.join(appDir, 'next.config.optimize-css')
)
const events = findAllTelemetryEvents(stderr, 'NEXT_BUILD_FEATURE_USAGE')
expect(events).toContainEqual({
featureName: 'experimental/optimizeCss',
invocationCount: 1,
})
})
it('emits telemetry for usage of `nextScriptWorkers`', async () => {
await fs.rename(
path.join(appDir, 'next.config.next-script-workers'),
path.join(appDir, 'next.config.js')
)
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.rename(
path.join(appDir, 'next.config.js'),
path.join(appDir, 'next.config.next-script-workers')
)
const featureUsageEvents = findAllTelemetryEvents(
stderr,
'NEXT_BUILD_FEATURE_USAGE'
)
expect(featureUsageEvents).toContainEqual({
featureName: 'experimental/nextScriptWorkers',
invocationCount: 1,
})
})
it('emits telemetry for usage of middleware', async () => {
await fs.writeFile(
path.join(appDir, 'middleware.js'),
`export function middleware () { }`
)
const { stderr } = await nextBuild(appDir, [], {
stderr: true,
env: { NEXT_TELEMETRY_DEBUG: 1 },
})
await fs.remove(path.join(appDir, 'middleware.js'))
const buildOptimizedEvents = findAllTelemetryEvents(
stderr,
'NEXT_BUILD_OPTIMIZED'
)
expect(buildOptimizedEvents).toContainEqual(
expect.objectContaining({
middlewareCount: 1,
})
)
})
it('emits telemetry for usage of swc plugins', async () => {
await fs.remove(path.join(appDir, 'next.config.js'))
await fs.remove(path.join(appDir, 'package.json'))