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import { nextTestSetup } from 'e2e-utils'
describe('app-dir client-components-tree-shaking', () => {
const { next, skipped } = nextTestSetup({
files: __dirname,
skipDeployment: true,
})
if (skipped) return
it('should only include imported components 3rd party package in browser bundle with direct imports', async () => {
const $ = await next.render$('/third-party-dep')
const chunkContents = await Promise.all(
$('script[src]')
.toArray()
.map(async (el) => {
const href = $(el).attr('src')
const file = await next.fetch(href).then((res) => res.text())
return file
})
)
expect(
chunkContents.some((content) => content.includes('client-dep-bar:esm'))
).toBe(true)
expect(
chunkContents.every((content) => content.includes('client-dep-foo:esm'))
).toBe(false)
expect(
chunkContents.every((content) =>
content.includes('client-dep-default:esm')
)
).toBe(false)
})
it('should only include the imported identifier of CJS module in browser bundle', async () => {
const $ = await next.render$('/cjs-dep')
const chunkContents = await Promise.all(
$('script[src]')
.toArray()
.map(async (el) => {
const href = $(el).attr('src')
const file = await next.fetch(href).then((res) => res.text())
return file
})
)
expect(
chunkContents.some((content) => content.includes('cjs-client:default'))
).toBe(true)
expect(
chunkContents.every((content) => content.includes('cjs-client:foo'))
).toBe(false)
})
it('should able to resolve the client module entry with mixing rexports', async () => {
const $ = await next.render$('/client-reexport-index')
expect($('p').text()).toContain('client:mod-export-default')
})
it('should handle mixing namespace imports and named imports from client components', async () => {
const $ = await next.render$('/client-import-namespace')
// mixing namespace imports and named imports
expect($('#a').text()).toContain('client-mod:export-a')
expect($('#b').text()).toContain('client-mod:export-b')
expect($('#c').text()).toContain('client-mod:export-c')
expect($('#named-c').text()).toContain('client-mod:export-c')
// only named exports
expect($('#a2').text()).toContain('client-mod2:export-a')
expect($('#b2').text()).toContain('client-mod2:export-b')
})
it('should only include imported relative components in browser bundle with direct imports', async () => {
const $ = await next.render$('/relative-dep')
const chunkContents = await Promise.all(
$('script[src]')
.toArray()
.map(async (el) => {
const href = $(el).attr('src')
const file = await next.fetch(href).then((res) => res.text())
return file
})
)
expect(
chunkContents.some((content) => content.includes('client-comp-imported'))
).toBe(true)
expect(
chunkContents.every((content) => content.includes('client-comp-unused'))
).toBe(false)
expect(
chunkContents.every((content) => content.includes('client-comp-default'))
).toBe(false)
})
})
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