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fix(resolve): try .tsx extension for .js import from typescript module #7005

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Mar 2, 2022
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46 changes: 45 additions & 1 deletion packages/vite/src/node/__tests__/utils.spec.ts
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import { injectQuery, isWindows } from '../utils'
import { getPotentialTsSrcPaths, injectQuery, isWindows } from '../utils'

if (isWindows) {
// this test will work incorrectly on unix systems
Expand Down Expand Up @@ -38,3 +38,47 @@ test('path with unicode, space, and %', () => {
'/usr/vite/東京 %20 hello?direct'
)
})

test('ts import of file with .js extension', () => {
expect(getPotentialTsSrcPaths('test-file.js')).toEqual([
'test-file.ts',
'test-file.tsx'
])
})

test('ts import of file with .jsx extension', () => {
expect(getPotentialTsSrcPaths('test-file.jsx')).toEqual(['test-file.tsx'])
})

test('ts import of file .mjs,.cjs extension', () => {
expect(getPotentialTsSrcPaths('test-file.cjs')).toEqual([
'test-file.cts',
'test-file.ctsx'
])
expect(getPotentialTsSrcPaths('test-file.mjs')).toEqual([
'test-file.mts',
'test-file.mtsx'
])
})

test('ts import of file with .js before extension', () => {
expect(getPotentialTsSrcPaths('test-file.js.js')).toEqual([
'test-file.js.ts',
'test-file.js.tsx'
])
})

test('ts import of file with .js and query param', () => {
expect(getPotentialTsSrcPaths('test-file.js.js?lee=123')).toEqual([
'test-file.js.ts?lee=123',
'test-file.js.tsx?lee=123'
])
})

test('ts import of non js file', () => {
expect(getPotentialTsSrcPaths('test-file.wasm')).toEqual(['test-file.wasm'])
})

test('ts import without any extension', () => {
expect(getPotentialTsSrcPaths('test-file')).toEqual(['test-file'])
})
26 changes: 15 additions & 11 deletions packages/vite/src/node/plugins/resolve.ts
Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ import {
isFileReadable,
isTsRequest,
isPossibleTsOutput,
getTsSrcPath
getPotentialTsSrcPaths
} from '../utils'
import type { ViteDevServer, SSROptions } from '..'
import type { PartialResolvedId } from 'rollup'
Expand Down Expand Up @@ -436,16 +436,20 @@ function tryResolveFile(

const tryTsExtension = options.isFromTsImporter && isPossibleTsOutput(file)
if (tryTsExtension) {
const tsSrcPath = getTsSrcPath(file)
return tryResolveFile(
tsSrcPath,
postfix,
options,
tryIndex,
targetWeb,
tryPrefix,
skipPackageJson
)
const tsSrcPaths = getPotentialTsSrcPaths(file)
for (const srcPath of tsSrcPaths) {
const res = tryResolveFile(
srcPath,
postfix,
options,
tryIndex,
targetWeb,
tryPrefix,
skipPackageJson
)
if (res) return res
}
return
}

if (tryPrefix) {
Expand Down
18 changes: 16 additions & 2 deletions packages/vite/src/node/utils.ts
Original file line number Diff line number Diff line change
Expand Up @@ -189,8 +189,22 @@ const knownTsOutputRE = /\.(js|mjs|cjs|jsx)$/
export const isTsRequest = (url: string) => knownTsRE.test(cleanUrl(url))
export const isPossibleTsOutput = (url: string) =>
knownTsOutputRE.test(cleanUrl(url))
export const getTsSrcPath = (filename: string) =>
filename.replace(/\.([cm])?(js)(x?)(\?|$)/, '.$1ts$3')
export const getPotentialTsSrcPaths = (filename: string) => {
const fileParts = filename.split(/(\.[cm]?js\?|\.[cm]?js$)/)

// If there are three parts, the file uses a .js, .mjs or .cjs extension.
// We replace the 'js' part with 'ts' and 'tsx'.
if (fileParts.length === 3) {
const [namePart, extension, queryPart] = fileParts

return [
`${namePart}${extension.replace('js', 'ts')}${queryPart}`,
`${namePart}${extension.replace('js', 'tsx')}${queryPart}`
]
}

return [filename.replace(/\.([cm])?(js)(x?)(\?|$)/, '.$1ts$3')]
}
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This is really nice, thanks for improving the implementation I came up with.


const importQueryRE = /(\?|&)import=?(?:&|$)/
const internalPrefixes = [
Expand Down