520 lines
14 KiB
TypeScript
520 lines
14 KiB
TypeScript
import { parse, SFCScriptCompileOptions, compileScript } from '../src'
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import { parse as babelParse } from '@babel/parser'
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import { babelParserDefaultPlugins } from '@vue/shared'
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function compile(src: string, options?: SFCScriptCompileOptions) {
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const { descriptor } = parse(src)
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return compileScript(descriptor, options)
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}
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function assertCode(code: string) {
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// parse the generated code to make sure it is valid
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try {
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babelParse(code, {
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sourceType: 'module',
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plugins: [...babelParserDefaultPlugins, 'typescript']
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})
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} catch (e) {
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console.log(code)
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throw e
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}
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expect(code).toMatchSnapshot()
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}
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describe('SFC compile <script setup>', () => {
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test('should hoist imports', () => {
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assertCode(
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compile(`<script setup>import { ref } from 'vue'</script>`).content
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)
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})
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test('explicit setup signature', () => {
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assertCode(
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compile(`<script setup="props, { emit }">emit('foo')</script>`).content
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)
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})
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test('import dedupe between <script> and <script setup>', () => {
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const { content } = compile(`
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<script>
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import { x } from './x'
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</script>
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<script setup>
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import { x } from './x'
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x()
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</script>
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`)
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assertCode(content)
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expect(content.indexOf(`import { x }`)).toEqual(
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content.lastIndexOf(`import { x }`)
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)
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})
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describe('exports', () => {
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test('export const x = ...', () => {
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const { content, bindings } = compile(
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`<script setup>export const x = 1</script>`
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)
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assertCode(content)
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expect(bindings).toStrictEqual({
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x: 'setup'
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})
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})
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test('export const { x } = ... (destructuring)', () => {
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const { content, bindings } = compile(`<script setup>
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export const [a = 1, { b } = { b: 123 }, ...c] = useFoo()
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export const { d = 2, _: [e], ...f } = useBar()
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</script>`)
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assertCode(content)
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expect(bindings).toStrictEqual({
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a: 'setup',
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b: 'setup',
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c: 'setup',
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d: 'setup',
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e: 'setup',
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f: 'setup'
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})
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})
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test('export function x() {}', () => {
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const { content, bindings } = compile(
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`<script setup>export function x(){}</script>`
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)
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assertCode(content)
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expect(bindings).toStrictEqual({
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x: 'setup'
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})
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})
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test('export class X() {}', () => {
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const { content, bindings } = compile(
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`<script setup>export class X {}</script>`
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)
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assertCode(content)
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expect(bindings).toStrictEqual({
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X: 'setup'
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})
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})
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test('export { x }', () => {
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const { content, bindings } = compile(
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`<script setup>
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const x = 1
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const y = 2
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export { x, y }
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</script>`
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)
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assertCode(content)
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expect(bindings).toStrictEqual({
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x: 'setup',
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y: 'setup'
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})
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})
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test(`export { x } from './x'`, () => {
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const { content, bindings } = compile(
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`<script setup>
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export { x, y } from './x'
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</script>`
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)
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assertCode(content)
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expect(bindings).toStrictEqual({
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x: 'setup',
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y: 'setup'
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})
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})
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test(`export default from './x'`, () => {
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const { content, bindings } = compile(
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`<script setup>
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export default from './x'
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</script>`,
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{
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babelParserPlugins: ['exportDefaultFrom']
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}
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)
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assertCode(content)
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expect(bindings).toStrictEqual({})
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})
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test(`export { x as default }`, () => {
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const { content, bindings } = compile(
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`<script setup>
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import x from './x'
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const y = 1
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export { x as default, y }
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</script>`
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)
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assertCode(content)
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expect(bindings).toStrictEqual({
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y: 'setup'
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})
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})
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test(`export { x as default } from './x'`, () => {
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const { content, bindings } = compile(
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`<script setup>
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export { x as default, y } from './x'
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</script>`
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)
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assertCode(content)
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expect(bindings).toStrictEqual({
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y: 'setup'
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})
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})
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test(`export * from './x'`, () => {
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const { content, bindings } = compile(
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`<script setup>
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export * from './x'
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export const y = 1
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</script>`
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)
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assertCode(content)
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expect(bindings).toStrictEqual({
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y: 'setup'
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// in this case we cannot extract bindings from ./x so it falls back
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// to runtime proxy dispatching
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})
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})
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test('export default in <script setup>', () => {
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const { content, bindings } = compile(
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`<script setup>
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export default {
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props: ['foo']
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}
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export const y = 1
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</script>`
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)
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assertCode(content)
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expect(bindings).toStrictEqual({
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y: 'setup'
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})
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})
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})
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describe('<script setup lang="ts">', () => {
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test('hoist type declarations', () => {
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const { content, bindings } = compile(`
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<script setup lang="ts">
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export interface Foo {}
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type Bar = {}
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export const a = 1
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</script>`)
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assertCode(content)
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expect(bindings).toStrictEqual({ a: 'setup' })
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})
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test('extract props', () => {
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const { content } = compile(`
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<script setup="myProps" lang="ts">
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interface Test {}
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type Alias = number[]
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declare const myProps: {
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string: string
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number: number
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boolean: boolean
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object: object
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objectLiteral: { a: number }
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fn: (n: number) => void
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functionRef: Function
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objectRef: Object
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array: string[]
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arrayRef: Array<any>
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tuple: [number, number]
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set: Set<string>
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literal: 'foo'
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optional?: any
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recordRef: Record<string, null>
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interface: Test
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alias: Alias
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union: string | number
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literalUnion: 'foo' | 'bar'
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literalUnionMixed: 'foo' | 1 | boolean
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intersection: Test & {}
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}
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</script>`)
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assertCode(content)
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expect(content).toMatch(`string: { type: String, required: true }`)
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expect(content).toMatch(`number: { type: Number, required: true }`)
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expect(content).toMatch(`boolean: { type: Boolean, required: true }`)
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expect(content).toMatch(`object: { type: Object, required: true }`)
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expect(content).toMatch(`objectLiteral: { type: Object, required: true }`)
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expect(content).toMatch(`fn: { type: Function, required: true }`)
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expect(content).toMatch(`functionRef: { type: Function, required: true }`)
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expect(content).toMatch(`objectRef: { type: Object, required: true }`)
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expect(content).toMatch(`array: { type: Array, required: true }`)
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expect(content).toMatch(`arrayRef: { type: Array, required: true }`)
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expect(content).toMatch(`tuple: { type: Array, required: true }`)
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expect(content).toMatch(`set: { type: Set, required: true }`)
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expect(content).toMatch(`literal: { type: String, required: true }`)
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expect(content).toMatch(`optional: { type: null, required: false }`)
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expect(content).toMatch(`recordRef: { type: Object, required: true }`)
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expect(content).toMatch(`interface: { type: Object, required: true }`)
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expect(content).toMatch(`alias: { type: Array, required: true }`)
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expect(content).toMatch(
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`union: { type: [String, Number], required: true }`
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)
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expect(content).toMatch(
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`literalUnion: { type: [String, String], required: true }`
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)
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expect(content).toMatch(
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`literalUnionMixed: { type: [String, Number, Boolean], required: true }`
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)
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expect(content).toMatch(`intersection: { type: Object, required: true }`)
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})
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test('extract emits', () => {
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const { content } = compile(`
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<script setup="_, { emit: myEmit }" lang="ts">
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declare function myEmit(e: 'foo' | 'bar'): void
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declare function myEmit(e: 'baz', id: number): void
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</script>
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`)
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assertCode(content)
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expect(content).toMatch(
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`declare function __emit__(e: 'foo' | 'bar'): void`
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)
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expect(content).toMatch(
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`declare function __emit__(e: 'baz', id: number): void`
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)
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expect(content).toMatch(
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`emits: ["foo", "bar", "baz"] as unknown as undefined`
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)
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})
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})
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describe('CSS vars injection', () => {
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test('<script> w/ no default export', () => {
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assertCode(
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compile(
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`<script>const a = 1</script>\n` +
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`<style vars="{ color }">div{ color: var(--color); }</style>`
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).content
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)
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})
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test('<script> w/ default export', () => {
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assertCode(
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compile(
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`<script>export default { setup() {} }</script>\n` +
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`<style vars="{ color }">div{ color: var(--color); }</style>`
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).content
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)
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})
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test('<script> w/ default export in strings/comments', () => {
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assertCode(
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compile(
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`<script>
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// export default {}
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export default {}
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</script>\n` +
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`<style vars="{ color }">div{ color: var(--color); }</style>`
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).content
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)
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})
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test('w/ <script setup>', () => {
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assertCode(
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compile(
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`<script setup>export const color = 'red'</script>\n` +
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`<style vars="{ color }">div{ color: var(--color); }</style>`
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).content
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)
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})
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})
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describe('async/await detection', () => {
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function assertAwaitDetection(code: string, shouldAsync = true) {
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const { content } = compile(`<script setup>${code}</script>`)
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expect(content).toMatch(
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`export ${shouldAsync ? `async ` : ``}function setup`
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)
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}
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test('expression statement', () => {
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assertAwaitDetection(`await foo`)
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})
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test('variable', () => {
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assertAwaitDetection(`const a = 1 + (await foo)`)
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})
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test('export', () => {
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assertAwaitDetection(`export const a = 1 + (await foo)`)
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})
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test('nested statements', () => {
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assertAwaitDetection(`if (ok) { await foo } else { await bar }`)
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})
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test('should ignore await inside functions', () => {
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// function declaration
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assertAwaitDetection(`export async function foo() { await bar }`, false)
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// function expression
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assertAwaitDetection(`const foo = async () => { await bar }`, false)
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// object method
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assertAwaitDetection(`const obj = { async method() { await bar }}`, false)
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// class method
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assertAwaitDetection(
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`const cls = class Foo { async method() { await bar }}`,
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false
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)
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})
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})
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describe('errors', () => {
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test('<script> and <script setup> must have same lang', () => {
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expect(() =>
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compile(`<script>foo()</script><script setup lang="ts">bar()</script>`)
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).toThrow(`<script> and <script setup> must have the same language type`)
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})
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test('export local as default', () => {
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expect(() =>
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compile(`<script setup>
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const bar = 1
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export { bar as default }
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</script>`)
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).toThrow(`Cannot export locally defined variable as default`)
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})
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test('export default referencing local var', () => {
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expect(() =>
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compile(`<script setup>
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const bar = 1
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export default {
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props: {
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foo: {
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default: () => bar
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}
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}
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}
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</script>`)
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).toThrow(`cannot reference locally declared variables`)
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})
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test('export default referencing exports', () => {
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expect(() =>
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compile(`<script setup>
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export const bar = 1
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export default {
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props: bar
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}
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</script>`)
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).toThrow(`cannot reference locally declared variables`)
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})
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test('should allow export default referencing scope var', () => {
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assertCode(
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compile(`<script setup>
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const bar = 1
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export default {
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props: {
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foo: {
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default: bar => bar + 1
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}
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}
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}
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</script>`).content
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)
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})
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test('should allow export default referencing imported binding', () => {
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assertCode(
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compile(`<script setup>
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import { bar } from './bar'
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export { bar }
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export default {
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props: {
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foo: {
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default: () => bar
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}
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}
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}
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</script>`).content
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)
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})
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test('should allow export default referencing re-exported binding', () => {
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assertCode(
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compile(`<script setup>
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export { bar } from './bar'
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export default {
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props: {
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foo: {
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default: () => bar
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}
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}
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}
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</script>`).content
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)
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})
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test('error on duplicated default export', () => {
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expect(() =>
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compile(`
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<script>
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export default {}
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</script>
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<script setup>
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export default {}
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</script>
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`)
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).toThrow(`Default export is already declared`)
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expect(() =>
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compile(`
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<script>
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export default {}
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</script>
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<script setup>
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const x = {}
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export { x as default }
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</script>
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`)
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).toThrow(`Default export is already declared`)
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expect(() =>
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compile(`
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<script>
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export default {}
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</script>
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<script setup>
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export { x as default } from './y'
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</script>
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`)
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).toThrow(`Default export is already declared`)
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expect(() =>
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compile(`
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<script>
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export { x as default } from './y'
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</script>
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<script setup>
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export default {}
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</script>
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`)
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).toThrow(`Default export is already declared`)
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expect(() =>
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compile(`
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<script>
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const x = {}
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export { x as default }
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</script>
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<script setup>
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export default {}
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</script>
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`)
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).toThrow(`Default export is already declared`)
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})
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})
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})
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