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hmr.spec.ts
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hmr.spec.ts
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import { beforeAll, describe, expect, it, test } from 'vitest'
import type { Page } from 'playwright-chromium'
import {
addFile,
browser,
browserLogs,
editFile,
getBg,
getColor,
isBuild,
page,
readFile,
removeFile,
serverLogs,
untilBrowserLogAfter,
untilUpdated,
viteTestUrl,
} from '~utils'
test('should render', async () => {
expect(await page.textContent('.app')).toBe('1')
expect(await page.textContent('.dep')).toBe('1')
expect(await page.textContent('.nested')).toBe('1')
})
if (!isBuild) {
test('should connect', async () => {
expect(browserLogs.length).toBe(3)
expect(browserLogs.some((msg) => msg.includes('connected'))).toBe(true)
browserLogs.length = 0
})
test('self accept', async () => {
const el = await page.$('.app')
await untilBrowserLogAfter(
() =>
editFile('hmr.ts', (code) =>
code.replace('const foo = 1', 'const foo = 2'),
),
[
'>>> vite:beforeUpdate -- update',
'foo was: 1',
'(self-accepting 1) foo is now: 2',
'(self-accepting 2) foo is now: 2',
'[vite] hot updated: /hmr.ts',
'>>> vite:afterUpdate -- update',
],
true,
)
await untilUpdated(() => el.textContent(), '2')
await untilBrowserLogAfter(
() =>
editFile('hmr.ts', (code) =>
code.replace('const foo = 2', 'const foo = 3'),
),
[
'>>> vite:beforeUpdate -- update',
'foo was: 2',
'(self-accepting 1) foo is now: 3',
'(self-accepting 2) foo is now: 3',
'[vite] hot updated: /hmr.ts',
'>>> vite:afterUpdate -- update',
],
true,
)
await untilUpdated(() => el.textContent(), '3')
})
test('accept dep', async () => {
const el = await page.$('.dep')
await untilBrowserLogAfter(
() =>
editFile('hmrDep.js', (code) =>
code.replace('const foo = 1', 'const foo = 2'),
),
[
'>>> vite:beforeUpdate -- update',
'(dep) foo was: 1',
'(dep) foo from dispose: 1',
'(single dep) foo is now: 2',
'(single dep) nested foo is now: 1',
'(multi deps) foo is now: 2',
'(multi deps) nested foo is now: 1',
'[vite] hot updated: /hmrDep.js via /hmr.ts',
'>>> vite:afterUpdate -- update',
],
true,
)
await untilUpdated(() => el.textContent(), '2')
await untilBrowserLogAfter(
() =>
editFile('hmrDep.js', (code) =>
code.replace('const foo = 2', 'const foo = 3'),
),
[
'>>> vite:beforeUpdate -- update',
'(dep) foo was: 2',
'(dep) foo from dispose: 2',
'(single dep) foo is now: 3',
'(single dep) nested foo is now: 1',
'(multi deps) foo is now: 3',
'(multi deps) nested foo is now: 1',
'[vite] hot updated: /hmrDep.js via /hmr.ts',
'>>> vite:afterUpdate -- update',
],
true,
)
await untilUpdated(() => el.textContent(), '3')
})
test('nested dep propagation', async () => {
const el = await page.$('.nested')
await untilBrowserLogAfter(
() =>
editFile('hmrNestedDep.js', (code) =>
code.replace('const foo = 1', 'const foo = 2'),
),
[
'>>> vite:beforeUpdate -- update',
'(dep) foo was: 3',
'(dep) foo from dispose: 3',
'(single dep) foo is now: 3',
'(single dep) nested foo is now: 2',
'(multi deps) foo is now: 3',
'(multi deps) nested foo is now: 2',
'[vite] hot updated: /hmrDep.js via /hmr.ts',
'>>> vite:afterUpdate -- update',
],
true,
)
await untilUpdated(() => el.textContent(), '2')
await untilBrowserLogAfter(
() =>
editFile('hmrNestedDep.js', (code) =>
code.replace('const foo = 2', 'const foo = 3'),
),
[
'>>> vite:beforeUpdate -- update',
'(dep) foo was: 3',
'(dep) foo from dispose: 3',
'(single dep) foo is now: 3',
'(single dep) nested foo is now: 3',
'(multi deps) foo is now: 3',
'(multi deps) nested foo is now: 3',
'[vite] hot updated: /hmrDep.js via /hmr.ts',
'>>> vite:afterUpdate -- update',
],
true,
)
await untilUpdated(() => el.textContent(), '3')
})
test('invalidate', async () => {
const el = await page.$('.invalidation-parent')
await untilBrowserLogAfter(
() =>
editFile('invalidation/child.js', (code) =>
code.replace('child', 'child updated'),
),
[
'>>> vite:beforeUpdate -- update',
'>>> vite:invalidate -- /invalidation/child.js',
'[vite] invalidate /invalidation/child.js',
'[vite] hot updated: /invalidation/child.js',
'>>> vite:afterUpdate -- update',
'>>> vite:beforeUpdate -- update',
'(invalidation) parent is executing',
'[vite] hot updated: /invalidation/parent.js',
'>>> vite:afterUpdate -- update',
],
true,
)
await untilUpdated(() => el.textContent(), 'child updated')
})
test('invalidate works with multiple tabs', async () => {
let page2: Page
try {
page2 = await browser.newPage()
await page2.goto(viteTestUrl)
const el = await page.$('.invalidation-parent')
await untilBrowserLogAfter(
() =>
editFile('invalidation/child.js', (code) =>
code.replace('child', 'child updated'),
),
[
'>>> vite:beforeUpdate -- update',
'>>> vite:invalidate -- /invalidation/child.js',
'[vite] invalidate /invalidation/child.js',
'[vite] hot updated: /invalidation/child.js',
'>>> vite:afterUpdate -- update',
// if invalidate dedupe doesn't work correctly, this beforeUpdate will be called twice
'>>> vite:beforeUpdate -- update',
'(invalidation) parent is executing',
'[vite] hot updated: /invalidation/parent.js',
'>>> vite:afterUpdate -- update',
],
true,
)
await untilUpdated(() => el.textContent(), 'child updated')
} finally {
await page2.close()
}
})
test('invalidate on root triggers page reload', async () => {
editFile('invalidation/root.js', (code) => code.replace('Init', 'Updated'))
await page.waitForEvent('load')
await untilUpdated(
async () => (await page.$('.invalidation-root')).textContent(),
'Updated',
)
})
test('soft invalidate', async () => {
const el = await page.$('.soft-invalidation')
expect(await el.textContent()).toBe(
'soft-invalidation/index.js is transformed 1 times. child is bar',
)
editFile('soft-invalidation/child.js', (code) =>
code.replace('bar', 'updated'),
)
await untilUpdated(
() => el.textContent(),
'soft-invalidation/index.js is transformed 1 times. child is updated',
)
editFile('soft-invalidation/index.js', (code) =>
code.replace('child is', 'child is now'),
)
editFile('soft-invalidation/child.js', (code) =>
code.replace('updated', 'updated?'),
)
await untilUpdated(
() => el.textContent(),
'soft-invalidation/index.js is transformed 2 times. child is now updated?',
)
})
test('plugin hmr handler + custom event', async () => {
const el = await page.$('.custom')
editFile('customFile.js', (code) => code.replace('custom', 'edited'))
await untilUpdated(() => el.textContent(), 'edited')
})
test('plugin hmr remove custom events', async () => {
const el = await page.$('.toRemove')
editFile('customFile.js', (code) => code.replace('custom', 'edited'))
await untilUpdated(() => el.textContent(), 'edited')
editFile('customFile.js', (code) => code.replace('edited', 'custom'))
await untilUpdated(() => el.textContent(), 'edited')
})
test('plugin client-server communication', async () => {
const el = await page.$('.custom-communication')
await untilUpdated(() => el.textContent(), '3')
})
test('full-reload encodeURI path', async () => {
await page.goto(
viteTestUrl + '/unicode-path/中文-にほんご-한글-🌕🌖🌗/index.html',
)
const el = await page.$('#app')
expect(await el.textContent()).toBe('title')
editFile('unicode-path/中文-にほんご-한글-🌕🌖🌗/index.html', (code) =>
code.replace('title', 'title2'),
)
await page.waitForEvent('load')
await untilUpdated(
async () => (await page.$('#app')).textContent(),
'title2',
)
})
test('CSS update preserves query params', async () => {
await page.goto(viteTestUrl)
editFile('global.css', (code) => code.replace('white', 'tomato'))
const elprev = await page.$('.css-prev')
const elpost = await page.$('.css-post')
await untilUpdated(() => elprev.textContent(), 'param=required')
await untilUpdated(() => elpost.textContent(), 'param=required')
const textprev = await elprev.textContent()
const textpost = await elpost.textContent()
expect(textprev).not.toBe(textpost)
expect(textprev).not.toMatch('direct')
expect(textpost).not.toMatch('direct')
})
test('it swaps out link tags', async () => {
await page.goto(viteTestUrl)
editFile('global.css', (code) => code.replace('white', 'tomato'))
let el = await page.$('.link-tag-added')
await untilUpdated(() => el.textContent(), 'yes')
el = await page.$('.link-tag-removed')
await untilUpdated(() => el.textContent(), 'yes')
expect((await page.$$('link')).length).toBe(1)
})
test('not loaded dynamic import', async () => {
await page.goto(viteTestUrl + '/counter/index.html', { waitUntil: 'load' })
let btn = await page.$('button')
expect(await btn.textContent()).toBe('Counter 0')
await btn.click()
expect(await btn.textContent()).toBe('Counter 1')
// Modifying `index.ts` triggers a page reload, as expected
const indexTsLoadPromise = page.waitForEvent('load')
editFile('counter/index.ts', (code) => code)
await indexTsLoadPromise
btn = await page.$('button')
expect(await btn.textContent()).toBe('Counter 0')
await btn.click()
expect(await btn.textContent()).toBe('Counter 1')
// #7561
// `dep.ts` defines `import.module.hot.accept` and has not been loaded.
// Therefore, modifying it has no effect (doesn't trigger a page reload).
// (Note that, a dynamic import that is never loaded and that does not
// define `accept.module.hot.accept` may wrongfully trigger a full page
// reload, see discussion at #7561.)
const depTsLoadPromise = page.waitForEvent('load', { timeout: 1000 })
editFile('counter/dep.ts', (code) => code)
await expect(depTsLoadPromise).rejects.toThrow(
/page\.waitForEvent: Timeout \d+ms exceeded while waiting for event "load"/,
)
btn = await page.$('button')
expect(await btn.textContent()).toBe('Counter 1')
})
// #2255
test('importing reloaded', async () => {
await page.goto(viteTestUrl)
const outputEle = await page.$('.importing-reloaded')
const getOutput = () => {
return outputEle.innerHTML()
}
await untilUpdated(getOutput, ['a.js: a0', 'b.js: b0,a0'].join('<br>'))
editFile('importing-updated/a.js', (code) => code.replace("'a0'", "'a1'"))
await untilUpdated(
getOutput,
['a.js: a0', 'b.js: b0,a0', 'a.js: a1'].join('<br>'),
)
editFile('importing-updated/b.js', (code) =>
code.replace('`b0,${a}`', '`b1,${a}`'),
)
// note that "a.js: a1" should not happen twice after "b.js: b0,a0'"
await untilUpdated(
getOutput,
['a.js: a0', 'b.js: b0,a0', 'a.js: a1', 'b.js: b1,a1'].join('<br>'),
)
})
describe('acceptExports', () => {
const HOT_UPDATED = /hot updated/
const CONNECTED = /connected/
const baseDir = 'accept-exports'
describe('when all used exports are accepted', () => {
const testDir = baseDir + '/main-accepted'
const fileName = 'target.ts'
const file = `${testDir}/${fileName}`
const url = '/' + file
let dep = 'dep0'
beforeAll(async () => {
await untilBrowserLogAfter(
() => page.goto(`${viteTestUrl}/${testDir}/`),
[CONNECTED, />>>>>>/],
(logs) => {
expect(logs).toContain(`<<<<<< A0 B0 D0 ; ${dep}`)
expect(logs).toContain('>>>>>> A0 D0')
},
)
})
it('the callback is called with the new version the module', async () => {
const callbackFile = `${testDir}/callback.ts`
const callbackUrl = '/' + callbackFile
await untilBrowserLogAfter(
() => {
editFile(callbackFile, (code) =>
code
.replace("x = 'X'", "x = 'Y'")
.replace('reloaded >>>', 'reloaded (2) >>>'),
)
},
HOT_UPDATED,
(logs) => {
expect(logs).toEqual([
'reloaded >>> Y',
`[vite] hot updated: ${callbackUrl}`,
])
},
)
await untilBrowserLogAfter(
() => {
editFile(callbackFile, (code) => code.replace("x = 'Y'", "x = 'Z'"))
},
HOT_UPDATED,
(logs) => {
expect(logs).toEqual([
'reloaded (2) >>> Z',
`[vite] hot updated: ${callbackUrl}`,
])
},
)
})
it('stops HMR bubble on dependency change', async () => {
const depFileName = 'dep.ts'
const depFile = `${testDir}/${depFileName}`
await untilBrowserLogAfter(
() => {
editFile(depFile, (code) => code.replace('dep0', (dep = 'dep1')))
},
HOT_UPDATED,
(logs) => {
expect(logs).toEqual([
`<<<<<< A0 B0 D0 ; ${dep}`,
`[vite] hot updated: ${url}`,
])
},
)
})
it('accepts itself and refreshes on change', async () => {
await untilBrowserLogAfter(
() => {
editFile(file, (code) => code.replace(/(\b[A-Z])0/g, '$11'))
},
HOT_UPDATED,
(logs) => {
expect(logs).toEqual([
`<<<<<< A1 B1 D1 ; ${dep}`,
`[vite] hot updated: ${url}`,
])
},
)
})
it('accepts itself and refreshes on 2nd change', async () => {
await untilBrowserLogAfter(
() => {
editFile(file, (code) =>
code
.replace(/(\b[A-Z])1/g, '$12')
.replace(
"acceptExports(['a', 'default']",
"acceptExports(['b', 'default']",
),
)
},
HOT_UPDATED,
(logs) => {
expect(logs).toEqual([
`<<<<<< A2 B2 D2 ; ${dep}`,
`[vite] hot updated: ${url}`,
])
},
)
})
it('does not accept itself anymore after acceptedExports change', async () => {
await untilBrowserLogAfter(
async () => {
editFile(file, (code) => code.replace(/(\b[A-Z])2/g, '$13'))
await page.waitForEvent('load')
},
[CONNECTED, />>>>>>/],
(logs) => {
expect(logs).toContain(`<<<<<< A3 B3 D3 ; ${dep}`)
expect(logs).toContain('>>>>>> A3 D3')
},
)
})
})
describe('when some used exports are not accepted', () => {
const testDir = baseDir + '/main-non-accepted'
const namedFileName = 'named.ts'
const namedFile = `${testDir}/${namedFileName}`
const defaultFileName = 'default.ts'
const defaultFile = `${testDir}/${defaultFileName}`
const depFileName = 'dep.ts'
const depFile = `${testDir}/${depFileName}`
const a = 'A0'
let dep = 'dep0'
beforeAll(async () => {
await untilBrowserLogAfter(
() => page.goto(`${viteTestUrl}/${testDir}/`),
[CONNECTED, />>>>>>/],
(logs) => {
expect(logs).toContain(`<<< named: ${a} ; ${dep}`)
expect(logs).toContain(`<<< default: def0`)
expect(logs).toContain(`>>>>>> ${a} def0`)
},
)
})
it('does not stop the HMR bubble on change to dep', async () => {
await untilBrowserLogAfter(
async () => {
editFile(depFile, (code) => code.replace('dep0', (dep = 'dep1')))
await page.waitForEvent('load')
},
[CONNECTED, />>>>>>/],
(logs) => {
expect(logs).toContain(`<<< named: ${a} ; ${dep}`)
},
)
})
describe('does not stop the HMR bubble on change to self', () => {
it('with named exports', async () => {
await untilBrowserLogAfter(
async () => {
editFile(namedFile, (code) => code.replace(a, 'A1'))
await page.waitForEvent('load')
},
[CONNECTED, />>>>>>/],
(logs) => {
expect(logs).toContain(`<<< named: A1 ; ${dep}`)
},
)
})
it('with default export', async () => {
await untilBrowserLogAfter(
async () => {
editFile(defaultFile, (code) => code.replace('def0', 'def1'))
await page.waitForEvent('load')
},
[CONNECTED, />>>>>>/],
(logs) => {
expect(logs).toContain(`<<< default: def1`)
},
)
})
})
})
test('accepts itself when imported for side effects only (no bindings imported)', async () => {
const testDir = baseDir + '/side-effects'
const file = 'side-effects.ts'
await untilBrowserLogAfter(
() => page.goto(`${viteTestUrl}/${testDir}/`),
[CONNECTED, />>>/],
(logs) => {
expect(logs).toContain('>>> side FX')
},
)
await untilBrowserLogAfter(
() => {
editFile(`${testDir}/${file}`, (code) =>
code.replace('>>> side FX', '>>> side FX !!'),
)
},
HOT_UPDATED,
(logs) => {
expect(logs).toEqual([
'>>> side FX !!',
`[vite] hot updated: /${testDir}/${file}`,
])
},
)
})
describe('acceptExports([])', () => {
const testDir = baseDir + '/unused-exports'
test('accepts itself if no exports are imported', async () => {
const fileName = 'unused.ts'
const file = `${testDir}/${fileName}`
const url = '/' + file
await untilBrowserLogAfter(
() => page.goto(`${viteTestUrl}/${testDir}/`),
[CONNECTED, '-- unused --'],
(logs) => {
expect(logs).toContain('-- unused --')
},
)
await untilBrowserLogAfter(
() => {
editFile(file, (code) =>
code.replace('-- unused --', '-> unused <-'),
)
},
HOT_UPDATED,
(logs) => {
expect(logs).toEqual(['-> unused <-', `[vite] hot updated: ${url}`])
},
)
})
test("doesn't accept itself if any of its exports is imported", async () => {
const fileName = 'used.ts'
const file = `${testDir}/${fileName}`
await untilBrowserLogAfter(
() => page.goto(`${viteTestUrl}/${testDir}/`),
[CONNECTED, '-- used --'],
(logs) => {
expect(logs).toContain('-- used --')
expect(logs).toContain('used:foo0')
},
)
await untilBrowserLogAfter(
async () => {
editFile(file, (code) =>
code.replace('foo0', 'foo1').replace('-- used --', '-> used <-'),
)
await page.waitForEvent('load')
},
[CONNECTED, /used:foo/],
(logs) => {
expect(logs).toContain('-> used <-')
expect(logs).toContain('used:foo1')
},
)
})
})
describe('indiscriminate imports: import *', () => {
const testStarExports = (testDirName: string) => {
const testDir = `${baseDir}/${testDirName}`
it('accepts itself if all its exports are accepted', async () => {
const fileName = 'deps-all-accepted.ts'
const file = `${testDir}/${fileName}`
const url = '/' + file
await untilBrowserLogAfter(
() => page.goto(`${viteTestUrl}/${testDir}/`),
[CONNECTED, '>>> ready <<<'],
(logs) => {
expect(logs).toContain('loaded:all:a0b0c0default0')
expect(logs).toContain('all >>>>>> a0, b0, c0')
},
)
await untilBrowserLogAfter(
() => {
editFile(file, (code) => code.replace(/([abc])0/g, '$11'))
},
HOT_UPDATED,
(logs) => {
expect(logs).toEqual([
'all >>>>>> a1, b1, c1',
`[vite] hot updated: ${url}`,
])
},
)
await untilBrowserLogAfter(
() => {
editFile(file, (code) => code.replace(/([abc])1/g, '$12'))
},
HOT_UPDATED,
(logs) => {
expect(logs).toEqual([
'all >>>>>> a2, b2, c2',
`[vite] hot updated: ${url}`,
])
},
)
})
it("doesn't accept itself if one export is not accepted", async () => {
const fileName = 'deps-some-accepted.ts'
const file = `${testDir}/${fileName}`
await untilBrowserLogAfter(
() => page.goto(`${viteTestUrl}/${testDir}/`),
[CONNECTED, '>>> ready <<<'],
(logs) => {
expect(logs).toContain('loaded:some:a0b0c0default0')
expect(logs).toContain('some >>>>>> a0, b0, c0')
},
)
await untilBrowserLogAfter(
async () => {
const loadPromise = page.waitForEvent('load')
editFile(file, (code) => code.replace(/([abc])0/g, '$11'))
await loadPromise
},
[CONNECTED, '>>> ready <<<'],
(logs) => {
expect(logs).toContain('loaded:some:a1b1c1default0')
expect(logs).toContain('some >>>>>> a1, b1, c1')
},
)
})
}
describe('import * from ...', () => testStarExports('star-imports'))
describe('dynamic import(...)', () => testStarExports('dynamic-imports'))
})
})
test('css in html hmr', async () => {
await page.goto(viteTestUrl)
expect(await getBg('.import-image')).toMatch('icon')
await page.goto(viteTestUrl + '/foo/', { waitUntil: 'load' })
expect(await getBg('.import-image')).toMatch('icon')
const loadPromise = page.waitForEvent('load')
editFile('index.html', (code) => code.replace('url("./icon.png")', ''))
await loadPromise
expect(await getBg('.import-image')).toMatch('')
})
test('HTML', async () => {
await page.goto(viteTestUrl + '/counter/index.html')
let btn = await page.$('button')
expect(await btn.textContent()).toBe('Counter 0')
const loadPromise = page.waitForEvent('load')
editFile('counter/index.html', (code) =>
code.replace('Counter', 'Compteur'),
)
await loadPromise
btn = await page.$('button')
expect(await btn.textContent()).toBe('Compteur 0')
})
test('handle virtual module updates', async () => {
await page.goto(viteTestUrl)
const el = await page.$('.virtual')
expect(await el.textContent()).toBe('[success]0')
editFile('importedVirtual.js', (code) => code.replace('[success]', '[wow]'))
await untilUpdated(async () => {
const el = await page.$('.virtual')
return await el.textContent()
}, '[wow]')
})
test('invalidate virtual module', async () => {
await page.goto(viteTestUrl)
const el = await page.$('.virtual')
expect(await el.textContent()).toBe('[wow]0')
const btn = await page.$('.virtual-update')
btn.click()
await untilUpdated(async () => {
const el = await page.$('.virtual')
return await el.textContent()
}, '[wow]1')
})
test('keep hmr reload after missing import on server startup', async () => {
const file = 'missing-import/a.js'
const importCode = "import 'missing-modules'"
const unImportCode = `// ${importCode}`
await untilBrowserLogAfter(
() =>
page.goto(viteTestUrl + '/missing-import/index.html', {
waitUntil: 'load',
}),
/connected/, // wait for HMR connection
)
await untilBrowserLogAfter(async () => {
const loadPromise = page.waitForEvent('load')
editFile(file, (code) => code.replace(importCode, unImportCode))
await loadPromise
}, ['missing test', /connected/])
await untilBrowserLogAfter(async () => {
const loadPromise = page.waitForEvent('load')
editFile(file, (code) => code.replace(unImportCode, importCode))
await loadPromise
}, [/500/, /connected/])
})
test('should hmr when file is deleted and restored', async () => {
await page.goto(viteTestUrl)
const parentFile = 'file-delete-restore/parent.js'
const childFile = 'file-delete-restore/child.js'
await untilUpdated(
() => page.textContent('.file-delete-restore'),
'parent:child',
)
editFile(childFile, (code) =>
code.replace("value = 'child'", "value = 'child1'"),
)
await untilUpdated(
() => page.textContent('.file-delete-restore'),
'parent:child1',
)
// delete the file
editFile(parentFile, (code) =>
code.replace(
"export { value as childValue } from './child'",
"export const childValue = 'not-child'",
),
)
const originalChildFileCode = readFile(childFile)
removeFile(childFile)
await untilUpdated(
() => page.textContent('.file-delete-restore'),
'parent:not-child',
)
await untilBrowserLogAfter(async () => {
const loadPromise = page.waitForEvent('load')
addFile(childFile, originalChildFileCode)
editFile(parentFile, (code) =>
code.replace(
"export const childValue = 'not-child'",
"export { value as childValue } from './child'",
),
)
await loadPromise
}, [/connected/])
await untilUpdated(
() => page.textContent('.file-delete-restore'),
'parent:child',
)
})
test('delete file should not break hmr', async () => {
await page.goto(viteTestUrl)
await untilUpdated(
() => page.textContent('.intermediate-file-delete-display'),
'count is 1',
)
// add state
await page.click('.intermediate-file-delete-increment')
await untilUpdated(
() => page.textContent('.intermediate-file-delete-display'),
'count is 2',
)
// update import, hmr works
editFile('intermediate-file-delete/index.js', (code) =>
code.replace("from './re-export.js'", "from './display.js'"),
)
editFile('intermediate-file-delete/display.js', (code) =>
code.replace('count is ${count}', 'count is ${count}!'),
)
await untilUpdated(
() => page.textContent('.intermediate-file-delete-display'),
'count is 2!',
)
// remove unused file, page reload because it's considered entry point now
removeFile('intermediate-file-delete/re-export.js')
await untilUpdated(
() => page.textContent('.intermediate-file-delete-display'),
'count is 1!',
)
// re-add state
await page.click('.intermediate-file-delete-increment')
await untilUpdated(
() => page.textContent('.intermediate-file-delete-display'),
'count is 2!',
)
// hmr works after file deletion
editFile('intermediate-file-delete/display.js', (code) =>
code.replace('count is ${count}!', 'count is ${count}'),
)
await untilUpdated(
() => page.textContent('.intermediate-file-delete-display'),
'count is 2',
)
})
test('deleted file should trigger dispose and prune callbacks', async () => {
await page.goto(viteTestUrl)
const parentFile = 'file-delete-restore/parent.js'
const childFile = 'file-delete-restore/child.js'
// delete the file
editFile(parentFile, (code) =>
code.replace(
"export { value as childValue } from './child'",
"export const childValue = 'not-child'",
),
)
const originalChildFileCode = readFile(childFile)
removeFile(childFile)
await untilUpdated(
() => page.textContent('.file-delete-restore'),
'parent:not-child',
)
expect(browserLogs).to.include('file-delete-restore/child.js is disposed')
expect(browserLogs).to.include('file-delete-restore/child.js is pruned')
// restore the file
addFile(childFile, originalChildFileCode)
editFile(parentFile, (code) =>
code.replace(
"export const childValue = 'not-child'",
"export { value as childValue } from './child'",
),
)
await untilUpdated(
() => page.textContent('.file-delete-restore'),
'parent:child',
)
})
test('import.meta.hot?.accept', async () => {
const el = await page.$('.optional-chaining')
await untilBrowserLogAfter(
() =>
editFile('optional-chaining/child.js', (code) =>
code.replace('const foo = 1', 'const foo = 2'),
),
'(optional-chaining) child update',
)
await untilUpdated(() => el.textContent(), '2')
})
test('hmr works for self-accepted module within circular imported files', async () => {
await page.goto(viteTestUrl + '/self-accept-within-circular/index.html')
const el = await page.$('.self-accept-within-circular')
expect(await el.textContent()).toBe('c')
editFile('self-accept-within-circular/c.js', (code) =>
code.replace(`export const c = 'c'`, `export const c = 'cc'`),
)
await untilUpdated(
() => page.textContent('.self-accept-within-circular'),
'cc',
)
expect(serverLogs.length).greaterThanOrEqual(1)
// Should still keep hmr update, but it'll error on the browser-side and will refresh itself.
// Match on full log not possible because of color markers
expect(serverLogs.at(-1)!).toContain('hmr update')
})
test('hmr should not reload if no accepted within circular imported files', async () => {
await page.goto(viteTestUrl + '/circular/index.html')
const el = await page.$('.circular')
expect(await el.textContent()).toBe(
'mod-a -> mod-b -> mod-c -> mod-a (expected error)',
)
editFile('circular/mod-b.js', (code) =>
code.replace(`mod-b ->`, `mod-b (edited) ->`),
)
await untilUpdated(
() => el.textContent(),
'mod-a -> mod-b (edited) -> mod-c -> mod-a (expected error)',
)
})
test('assets HMR', async () => {
await page.goto(viteTestUrl)
const el = await page.$('#logo')
await untilBrowserLogAfter(
() =>
editFile('logo.svg', (code) =>
code.replace('height="30px"', 'height="40px"'),
),
/Logo updated/,
)
await untilUpdated(() => el.evaluate((it) => `${it.clientHeight}`), '40')
})