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fix(compiler-sfc): rewrite default export with AST analysis instead o…
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…f regex (#7068)

closes #7038
closes #7041
closes #7078
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@sxzz
sxzz authored Mar 28, 2023
1 parent 7def8b1 commit 701b95f
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Showing 5 changed files with 149 additions and 89 deletions.
115 changes: 81 additions & 34 deletions packages/compiler-sfc/__tests__/rewriteDefault.spec.ts
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,9 @@ import { rewriteDefault } from '../src'

describe('compiler sfc: rewriteDefault', () => {
test('without export default', () => {
expect(rewriteDefault(`export a = {}`, 'script')).toMatchInlineSnapshot(`
"export a = {}
expect(rewriteDefault(`export const a = {}`, 'script'))
.toMatchInlineSnapshot(`
"export const a = {}
const script = {}"
`)
})
Expand All @@ -14,6 +15,14 @@ describe('compiler sfc: rewriteDefault', () => {
).toMatchInlineSnapshot(`"const script = {}"`)
})

test('rewrite variable value default', () => {
expect(rewriteDefault(`export const foo = 'default'`, 'script'))
.toMatchInlineSnapshot(`
"export const foo = 'default'
const script = {}"
`)
})

test('rewrite export named default', () => {
expect(
rewriteDefault(
Expand All @@ -36,6 +45,18 @@ describe('compiler sfc: rewriteDefault', () => {
export { a as b, a as c}
const script = a"
`)

expect(
rewriteDefault(
`const a = 1 \n export { a as b } \n export { a as default, a as c }`,
'script'
)
).toMatchInlineSnapshot(`
"const a = 1
export { a as b }
export { a as c }
const script = a"
`)
})

test('w/ comments', async () => {
Expand All @@ -52,7 +73,7 @@ describe('compiler sfc: rewriteDefault', () => {
).toMatchInlineSnapshot(`
"let App = {}
export {
}
const _sfc_main = App"
`)
Expand Down Expand Up @@ -96,25 +117,25 @@ describe('compiler sfc: rewriteDefault', () => {
expect(
rewriteDefault(`export { default, foo } from './index.js'`, 'script')
).toMatchInlineSnapshot(`
"import { default as __VUE_DEFAULT__ } from './index.js'
export { foo } from './index.js'
const script = __VUE_DEFAULT__"
"import { default as __VUE_DEFAULT__ } from './index.js'
export { foo } from './index.js'
const script = __VUE_DEFAULT__"
`)

expect(
rewriteDefault(`export { default , foo } from './index.js'`, 'script')
).toMatchInlineSnapshot(`
"import { default as __VUE_DEFAULT__ } from './index.js'
export { foo } from './index.js'
const script = __VUE_DEFAULT__"
"import { default as __VUE_DEFAULT__ } from './index.js'
export { foo } from './index.js'
const script = __VUE_DEFAULT__"
`)

expect(
rewriteDefault(`export { foo, default } from './index.js'`, 'script')
).toMatchInlineSnapshot(`
"import { default as __VUE_DEFAULT__ } from './index.js'
export { foo, } from './index.js'
const script = __VUE_DEFAULT__"
"import { default as __VUE_DEFAULT__ } from './index.js'
export { foo, } from './index.js'
const script = __VUE_DEFAULT__"
`)

expect(
Expand All @@ -123,9 +144,9 @@ describe('compiler sfc: rewriteDefault', () => {
'script'
)
).toMatchInlineSnapshot(`
"import { foo } from './index.js'
export { bar } from './index.js'
const script = foo"
"import { foo as __VUE_DEFAULT__ } from './index.js'
export { bar } from './index.js'
const script = __VUE_DEFAULT__"
`)

expect(
Expand All @@ -134,9 +155,9 @@ describe('compiler sfc: rewriteDefault', () => {
'script'
)
).toMatchInlineSnapshot(`
"import { foo } from './index.js'
export { bar } from './index.js'
const script = foo"
"import { foo as __VUE_DEFAULT__ } from './index.js'
export { bar } from './index.js'
const script = __VUE_DEFAULT__"
`)

expect(
Expand All @@ -145,26 +166,50 @@ describe('compiler sfc: rewriteDefault', () => {
'script'
)
).toMatchInlineSnapshot(`
"import { foo } from './index.js'
export { bar, } from './index.js'
const script = foo"
"import { foo as __VUE_DEFAULT__ } from './index.js'
export { bar, } from './index.js'
const script = __VUE_DEFAULT__"
`)

expect(
rewriteDefault(
`export { foo as default } from './index.js' \n const foo = 1`,
'script'
)
).toMatchInlineSnapshot(`
"import { foo as __VUE_DEFAULT__ } from './index.js'
export { } from './index.js'
const foo = 1
const script = __VUE_DEFAULT__"
`)

expect(
rewriteDefault(
`const a = 1 \nexport { a as default } from 'xxx'`,
'script'
)
).toMatchInlineSnapshot(`
"import { a as __VUE_DEFAULT__ } from 'xxx'
const a = 1
export { } from 'xxx'
const script = __VUE_DEFAULT__"
`)
})

test('export default class', async () => {
expect(rewriteDefault(`export default class Foo {}`, 'script'))
.toMatchInlineSnapshot(`
"class Foo {}
const script = Foo"
`)
" class Foo {}
const script = Foo"
`)
})

test('export default class w/ comments', async () => {
expect(
rewriteDefault(`// export default\nexport default class Foo {}`, 'script')
).toMatchInlineSnapshot(`
"// export default
class Foo {}
class Foo {}
const script = Foo"
`)
})
Expand All @@ -190,16 +235,18 @@ describe('compiler sfc: rewriteDefault', () => {
).toMatchInlineSnapshot(`
"/*
export default class Foo {}*/
class Bar {}
class Bar {}
const script = Bar"
`)
})

test('@Component\nexport default class', async () => {
expect(rewriteDefault(`@Component\nexport default class Foo {}`, 'script'))
.toMatchInlineSnapshot(`
"@Component
class Foo {}
expect(
rewriteDefault(`@Component\nexport default class Foo {}`, 'script', [
'decorators-legacy'
])
).toMatchInlineSnapshot(`
"@Component class Foo {}
const script = Foo"
`)
})
Expand All @@ -208,12 +255,12 @@ describe('compiler sfc: rewriteDefault', () => {
expect(
rewriteDefault(
`// export default\n@Component\nexport default class Foo {}`,
'script'
'script',
['decorators-legacy']
)
).toMatchInlineSnapshot(`
"// export default
@Component
class Foo {}
@Component class Foo {}
const script = Foo"
`)
})
Expand Down Expand Up @@ -242,7 +289,7 @@ describe('compiler sfc: rewriteDefault', () => {
"/*
@Component
export default class Foo {}*/
class Bar {}
class Bar {}
const script = Bar"
`)
})
Expand Down
7 changes: 5 additions & 2 deletions packages/compiler-sfc/src/compileScript.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,7 @@ import {
} from './cssVars'
import { compileTemplate, SFCTemplateCompileOptions } from './compileTemplate'
import { warnOnce } from './warn'
import { rewriteDefault } from './rewriteDefault'
import { rewriteDefaultAST } from './rewriteDefault'
import { createCache } from './cache'
import { shouldTransform, transformAST } from '@vue/reactivity-transform'

Expand Down Expand Up @@ -231,7 +231,9 @@ export function compileScript(
}
}
if (cssVars.length) {
content = rewriteDefault(content, DEFAULT_VAR, plugins)
const s = new MagicString(content)
rewriteDefaultAST(scriptAst.body, s, DEFAULT_VAR)
content = s.toString()
content += genNormalScriptCssVarsCode(
cssVars,
bindings,
Expand Down Expand Up @@ -1759,6 +1761,7 @@ export function compileScript(

return {
...scriptSetup,
s,
bindings: bindingMetadata,
imports: userImports,
content: s.toString(),
Expand Down
2 changes: 1 addition & 1 deletion packages/compiler-sfc/src/index.ts
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@ export { parse } from './parse'
export { compileTemplate } from './compileTemplate'
export { compileStyle, compileStyleAsync } from './compileStyle'
export { compileScript } from './compileScript'
export { rewriteDefault } from './rewriteDefault'
export { rewriteDefault, rewriteDefaultAST } from './rewriteDefault'
export {
shouldTransform as shouldTransformRef,
transform as transformRef,
Expand Down
2 changes: 2 additions & 0 deletions packages/compiler-sfc/src/parse.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ import { TemplateCompiler } from './compileTemplate'
import { parseCssVars } from './cssVars'
import { createCache } from './cache'
import { hmrShouldReload, ImportBinding } from './compileScript'
import MagicString from 'magic-string'

export const DEFAULT_FILENAME = 'anonymous.vue'

Expand Down Expand Up @@ -41,6 +42,7 @@ export interface SFCTemplateBlock extends SFCBlock {

export interface SFCScriptBlock extends SFCBlock {
type: 'script'
s: MagicString
setup?: string | boolean
bindings?: BindingMetadata
imports?: Record<string, ImportBinding>
Expand Down
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