903 lines
22 KiB
TypeScript
903 lines
22 KiB
TypeScript
import {
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describe,
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Component,
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defineComponent,
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PropType,
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ref,
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reactive,
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createApp,
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expectError,
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expectType,
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ComponentPublicInstance,
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ComponentOptions,
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SetupContext
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} from './index'
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describe('with object props', () => {
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interface ExpectedProps {
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a?: number | undefined
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b: string
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e?: Function
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bb: string
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bbb: string
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cc?: string[] | undefined
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dd: { n: 1 }
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ee?: () => string
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ff?: (a: number, b: string) => { a: boolean }
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ccc?: string[] | undefined
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ddd: string[]
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eee: () => { a: string }
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fff: (a: number, b: string) => { a: boolean }
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hhh: boolean
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ggg: 'foo' | 'bar'
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ffff: (a: number, b: string) => { a: boolean }
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validated?: string
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}
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type GT = string & { __brand: unknown }
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const MyComponent = defineComponent({
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props: {
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a: Number,
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// required should make property non-void
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b: {
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type: String,
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required: true
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},
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e: Function,
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// default value should infer type and make it non-void
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bb: {
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default: 'hello'
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},
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bbb: {
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// Note: default function value requires arrow syntax + explicit
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// annotation
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default: (props: any) => (props.bb as string) || 'foo'
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},
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// explicit type casting
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cc: Array as PropType<string[]>,
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// required + type casting
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dd: {
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type: Object as PropType<{ n: 1 }>,
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required: true
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},
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// return type
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ee: Function as PropType<() => string>,
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// arguments + object return
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ff: Function as PropType<(a: number, b: string) => { a: boolean }>,
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// explicit type casting with constructor
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ccc: Array as () => string[],
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// required + contructor type casting
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ddd: {
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type: Array as () => string[],
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required: true
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},
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// required + object return
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eee: {
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type: Function as PropType<() => { a: string }>,
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required: true
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},
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// required + arguments + object return
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fff: {
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type: Function as PropType<(a: number, b: string) => { a: boolean }>,
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required: true
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},
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hhh: {
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type: Boolean,
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required: true
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},
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// default + type casting
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ggg: {
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type: String as PropType<'foo' | 'bar'>,
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default: 'foo'
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},
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// default + function
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ffff: {
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type: Function as PropType<(a: number, b: string) => { a: boolean }>,
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default: (a: number, b: string) => ({ a: a > +b })
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},
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validated: {
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type: String,
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// validator requires explicit annotation
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validator: (val: unknown) => val !== ''
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}
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},
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setup(props) {
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// type assertion. See https://github.com/SamVerschueren/tsd
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expectType<ExpectedProps['a']>(props.a)
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expectType<ExpectedProps['b']>(props.b)
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expectType<ExpectedProps['e']>(props.e)
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expectType<ExpectedProps['bb']>(props.bb)
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expectType<ExpectedProps['bbb']>(props.bbb)
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expectType<ExpectedProps['cc']>(props.cc)
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expectType<ExpectedProps['dd']>(props.dd)
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expectType<ExpectedProps['ee']>(props.ee)
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expectType<ExpectedProps['ff']>(props.ff)
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expectType<ExpectedProps['ccc']>(props.ccc)
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expectType<ExpectedProps['ddd']>(props.ddd)
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expectType<ExpectedProps['eee']>(props.eee)
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expectType<ExpectedProps['fff']>(props.fff)
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expectType<ExpectedProps['hhh']>(props.hhh)
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expectType<ExpectedProps['ggg']>(props.ggg)
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expectType<ExpectedProps['ffff']>(props.ffff)
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expectType<ExpectedProps['validated']>(props.validated)
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// @ts-expect-error props should be readonly
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expectError((props.a = 1))
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// setup context
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return {
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c: ref(1),
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d: {
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e: ref('hi')
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},
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f: reactive({
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g: ref('hello' as GT)
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})
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}
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},
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render() {
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const props = this.$props
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expectType<ExpectedProps['a']>(props.a)
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expectType<ExpectedProps['b']>(props.b)
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expectType<ExpectedProps['e']>(props.e)
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expectType<ExpectedProps['bb']>(props.bb)
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expectType<ExpectedProps['cc']>(props.cc)
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expectType<ExpectedProps['dd']>(props.dd)
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expectType<ExpectedProps['ee']>(props.ee)
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expectType<ExpectedProps['ff']>(props.ff)
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expectType<ExpectedProps['ccc']>(props.ccc)
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expectType<ExpectedProps['ddd']>(props.ddd)
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expectType<ExpectedProps['eee']>(props.eee)
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expectType<ExpectedProps['fff']>(props.fff)
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expectType<ExpectedProps['hhh']>(props.hhh)
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expectType<ExpectedProps['ggg']>(props.ggg)
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// @ts-expect-error props should be readonly
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expectError((props.a = 1))
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// should also expose declared props on `this`
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expectType<ExpectedProps['a']>(this.a)
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expectType<ExpectedProps['b']>(this.b)
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expectType<ExpectedProps['e']>(this.e)
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expectType<ExpectedProps['bb']>(this.bb)
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expectType<ExpectedProps['cc']>(this.cc)
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expectType<ExpectedProps['dd']>(this.dd)
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expectType<ExpectedProps['ee']>(this.ee)
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expectType<ExpectedProps['ff']>(this.ff)
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expectType<ExpectedProps['ccc']>(this.ccc)
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expectType<ExpectedProps['ddd']>(this.ddd)
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expectType<ExpectedProps['eee']>(this.eee)
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expectType<ExpectedProps['fff']>(this.fff)
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expectType<ExpectedProps['hhh']>(this.hhh)
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expectType<ExpectedProps['ggg']>(this.ggg)
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// @ts-expect-error props on `this` should be readonly
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expectError((this.a = 1))
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// assert setup context unwrapping
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expectType<number>(this.c)
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expectType<string>(this.d.e.value)
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expectType<GT>(this.f.g)
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// setup context properties should be mutable
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this.c = 2
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return null
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}
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})
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expectType<Component>(MyComponent)
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// Test TSX
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expectType<JSX.Element>(
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<MyComponent
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a={1}
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b="b"
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bb="bb"
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e={() => {}}
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cc={['cc']}
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dd={{ n: 1 }}
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ee={() => 'ee'}
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ccc={['ccc']}
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ddd={['ddd']}
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eee={() => ({ a: 'eee' })}
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fff={(a, b) => ({ a: a > +b })}
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hhh={false}
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ggg="foo"
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// should allow class/style as attrs
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class="bar"
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style={{ color: 'red' }}
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// should allow key
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key={'foo'}
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// should allow ref
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ref={'foo'}
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/>
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)
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expectType<Component>(
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<MyComponent
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b="b"
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dd={{ n: 1 }}
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ddd={['ddd']}
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eee={() => ({ a: 'eee' })}
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fff={(a, b) => ({ a: a > +b })}
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hhh={false}
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/>
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)
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// @ts-expect-error missing required props
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expectError(<MyComponent />)
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expectError(
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// @ts-expect-error wrong prop types
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<MyComponent a={'wrong type'} b="foo" dd={{ n: 1 }} ddd={['foo']} />
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)
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expectError(
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// @ts-expect-error wrong prop types
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<MyComponent ggg="baz" />
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)
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// @ts-expect-error
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expectError(<MyComponent b="foo" dd={{ n: 'string' }} ddd={['foo']} />)
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// `this` should be void inside of prop validators and prop default factories
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defineComponent({
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props: {
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myProp: {
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type: Number,
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validator(val: unknown): boolean {
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// @ts-expect-error
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return val !== this.otherProp
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},
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default(): number {
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// @ts-expect-error
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return this.otherProp + 1
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}
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},
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otherProp: {
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type: Number,
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required: true
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}
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}
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})
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})
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// describe('type inference w/ optional props declaration', () => {
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// const MyComponent = defineComponent({
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// setup(_props: { msg: string }) {
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// return {
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// a: 1
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// }
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// },
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// render() {
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// expectType<string>(this.$props.msg)
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// // props should be readonly
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// expectError((this.$props.msg = 'foo'))
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// // should not expose on `this`
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// expectError(this.msg)
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// expectType<number>(this.a)
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// return null
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// }
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// })
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// expectType<JSX.Element>(<MyComponent msg="foo" />)
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// expectError(<MyComponent />)
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// expectError(<MyComponent msg={1} />)
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// })
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// describe('type inference w/ direct setup function', () => {
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// const MyComponent = defineComponent((_props: { msg: string }) => {})
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// expectType<JSX.Element>(<MyComponent msg="foo" />)
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// expectError(<MyComponent />)
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// expectError(<MyComponent msg={1} />)
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// })
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describe('type inference w/ array props declaration', () => {
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const MyComponent = defineComponent({
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props: ['a', 'b'],
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setup(props) {
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// @ts-expect-error props should be readonly
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expectError((props.a = 1))
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expectType<any>(props.a)
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expectType<any>(props.b)
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return {
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c: 1
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}
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},
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render() {
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expectType<any>(this.$props.a)
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expectType<any>(this.$props.b)
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// @ts-expect-error
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expectError((this.$props.a = 1))
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expectType<any>(this.a)
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expectType<any>(this.b)
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expectType<number>(this.c)
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}
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})
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expectType<JSX.Element>(<MyComponent a={[1, 2]} b="b" />)
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// @ts-expect-error
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expectError(<MyComponent other="other" />)
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})
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describe('type inference w/ options API', () => {
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defineComponent({
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props: { a: Number },
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setup() {
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return {
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b: 123
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}
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},
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data() {
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// Limitation: we cannot expose the return result of setup() on `this`
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// here in data() - somehow that would mess up the inference
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expectType<number | undefined>(this.a)
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return {
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c: this.a || 123
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}
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},
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computed: {
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d(): number {
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expectType<number>(this.b)
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return this.b + 1
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},
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e: {
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get(): number {
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expectType<number>(this.b)
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expectType<number>(this.d)
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return this.b + this.d
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},
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set(v: number) {
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expectType<number>(this.b)
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expectType<number>(this.d)
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expectType<number>(v)
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}
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}
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},
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watch: {
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a() {
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expectType<number>(this.b)
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this.b + 1
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}
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},
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created() {
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// props
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expectType<number | undefined>(this.a)
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// returned from setup()
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expectType<number>(this.b)
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// returned from data()
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expectType<number>(this.c)
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// computed
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expectType<number>(this.d)
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// computed get/set
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expectType<number>(this.e)
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},
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methods: {
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doSomething() {
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// props
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expectType<number | undefined>(this.a)
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// returned from setup()
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expectType<number>(this.b)
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// returned from data()
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expectType<number>(this.c)
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// computed
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expectType<number>(this.d)
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// computed get/set
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expectType<number>(this.e)
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},
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returnSomething() {
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return this.a
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}
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},
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render() {
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// props
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expectType<number | undefined>(this.a)
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// returned from setup()
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expectType<number>(this.b)
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// returned from data()
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expectType<number>(this.c)
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// computed
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expectType<number>(this.d)
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// computed get/set
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expectType<number>(this.e)
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// method
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expectType<() => number | undefined>(this.returnSomething)
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}
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})
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})
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describe('with mixins', () => {
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const MixinA = defineComponent({
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props: {
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aP1: {
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type: String,
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default: 'aP1'
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},
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aP2: Boolean
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},
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data() {
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return {
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a: 1
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}
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}
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})
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const MixinB = defineComponent({
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props: ['bP1', 'bP2'],
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data() {
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return {
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b: 2
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}
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}
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})
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const MixinC = defineComponent({
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data() {
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return {
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c: 3
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}
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}
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})
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const MixinD = defineComponent({
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mixins: [MixinA],
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data() {
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return {
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d: 4
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}
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},
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computed: {
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dC1(): number {
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return this.d + this.a
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},
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dC2(): string {
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return this.aP1 + 'dC2'
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}
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}
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})
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const MyComponent = defineComponent({
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mixins: [MixinA, MixinB, MixinC, MixinD],
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props: {
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// required should make property non-void
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z: {
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type: String,
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required: true
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}
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},
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render() {
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const props = this.$props
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// props
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expectType<string>(props.aP1)
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expectType<boolean | undefined>(props.aP2)
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expectType<any>(props.bP1)
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expectType<any>(props.bP2)
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expectType<string>(props.z)
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const data = this.$data
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expectType<number>(data.a)
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expectType<number>(data.b)
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expectType<number>(data.c)
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expectType<number>(data.d)
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// should also expose declared props on `this`
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expectType<number>(this.a)
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expectType<string>(this.aP1)
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expectType<boolean | undefined>(this.aP2)
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expectType<number>(this.b)
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expectType<any>(this.bP1)
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expectType<number>(this.c)
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expectType<number>(this.d)
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expectType<number>(this.dC1)
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expectType<string>(this.dC2)
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// props should be readonly
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// @ts-expect-error
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expectError((this.aP1 = 'new'))
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// @ts-expect-error
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expectError((this.z = 1))
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// props on `this` should be readonly
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// @ts-expect-error
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expectError((this.bP1 = 1))
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// string value can not assigned to number type value
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// @ts-expect-error
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expectError((this.c = '1'))
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// setup context properties should be mutable
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this.d = 5
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return null
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}
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})
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// Test TSX
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expectType<JSX.Element>(
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<MyComponent aP1={'aP'} aP2 bP1={1} bP2={[1, 2]} z={'z'} />
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)
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// missing required props
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// @ts-expect-error
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expectError(<MyComponent />)
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// wrong prop types
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// @ts-expect-error
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expectError(<MyComponent aP1="ap" aP2={'wrong type'} bP1="b" z={'z'} />)
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// @ts-expect-error
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expectError(<MyComponent aP1={1} bP2={[1]} />)
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})
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describe('with extends', () => {
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const Base = defineComponent({
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props: {
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aP1: Boolean,
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aP2: {
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type: Number,
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default: 2
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}
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},
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data() {
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return {
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a: 1
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}
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},
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computed: {
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c(): number {
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return this.aP2 + this.a
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}
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}
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})
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const MyComponent = defineComponent({
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extends: Base,
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props: {
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// required should make property non-void
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z: {
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type: String,
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required: true
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}
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},
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render() {
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const props = this.$props
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// props
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expectType<boolean | undefined>(props.aP1)
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expectType<number>(props.aP2)
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expectType<string>(props.z)
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const data = this.$data
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expectType<number>(data.a)
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// should also expose declared props on `this`
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expectType<number>(this.a)
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expectType<boolean | undefined>(this.aP1)
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expectType<number>(this.aP2)
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// setup context properties should be mutable
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this.a = 5
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return null
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}
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})
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// Test TSX
|
|
expectType<JSX.Element>(<MyComponent aP2={3} aP1 z={'z'} />)
|
|
|
|
// missing required props
|
|
// @ts-expect-error
|
|
expectError(<MyComponent />)
|
|
|
|
// wrong prop types
|
|
// @ts-expect-error
|
|
expectError(<MyComponent aP2={'wrong type'} z={'z'} />)
|
|
// @ts-expect-error
|
|
expectError(<MyComponent aP1={3} />)
|
|
})
|
|
|
|
describe('extends with mixins', () => {
|
|
const Mixin = defineComponent({
|
|
props: {
|
|
mP1: {
|
|
type: String,
|
|
default: 'mP1'
|
|
},
|
|
mP2: Boolean
|
|
},
|
|
data() {
|
|
return {
|
|
a: 1
|
|
}
|
|
}
|
|
})
|
|
const Base = defineComponent({
|
|
props: {
|
|
p1: Boolean,
|
|
p2: {
|
|
type: Number,
|
|
default: 2
|
|
}
|
|
},
|
|
data() {
|
|
return {
|
|
b: 2
|
|
}
|
|
},
|
|
computed: {
|
|
c(): number {
|
|
return this.p2 + this.b
|
|
}
|
|
}
|
|
})
|
|
const MyComponent = defineComponent({
|
|
extends: Base,
|
|
mixins: [Mixin],
|
|
props: {
|
|
// required should make property non-void
|
|
z: {
|
|
type: String,
|
|
required: true
|
|
}
|
|
},
|
|
render() {
|
|
const props = this.$props
|
|
// props
|
|
expectType<boolean | undefined>(props.p1)
|
|
expectType<number>(props.p2)
|
|
expectType<string>(props.z)
|
|
expectType<string>(props.mP1)
|
|
expectType<boolean | undefined>(props.mP2)
|
|
|
|
const data = this.$data
|
|
expectType<number>(data.a)
|
|
expectType<number>(data.b)
|
|
|
|
// should also expose declared props on `this`
|
|
expectType<number>(this.a)
|
|
expectType<number>(this.b)
|
|
expectType<boolean | undefined>(this.p1)
|
|
expectType<number>(this.p2)
|
|
expectType<string>(this.mP1)
|
|
expectType<boolean | undefined>(this.mP2)
|
|
|
|
// setup context properties should be mutable
|
|
this.a = 5
|
|
|
|
return null
|
|
}
|
|
})
|
|
|
|
// Test TSX
|
|
expectType<JSX.Element>(<MyComponent mP1="p1" mP2 p1 p2={1} z={'z'} />)
|
|
|
|
// missing required props
|
|
// @ts-expect-error
|
|
expectError(<MyComponent />)
|
|
|
|
// wrong prop types
|
|
// @ts-expect-error
|
|
expectError(<MyComponent p2={'wrong type'} z={'z'} />)
|
|
// @ts-expect-error
|
|
expectError(<MyComponent mP1={3} />)
|
|
})
|
|
|
|
describe('compatibility w/ createApp', () => {
|
|
const comp = defineComponent({})
|
|
createApp(comp).mount('#hello')
|
|
|
|
const comp2 = defineComponent({
|
|
props: { foo: String }
|
|
})
|
|
createApp(comp2).mount('#hello')
|
|
|
|
const comp3 = defineComponent({
|
|
setup() {
|
|
return {
|
|
a: 1
|
|
}
|
|
}
|
|
})
|
|
createApp(comp3).mount('#hello')
|
|
})
|
|
|
|
describe('defineComponent', () => {
|
|
test('should accept components defined with defineComponent', () => {
|
|
const comp = defineComponent({})
|
|
defineComponent({
|
|
components: { comp }
|
|
})
|
|
})
|
|
|
|
test('should accept class components with receiving constructor arguments', () => {
|
|
class Comp {
|
|
static __vccOpts = {}
|
|
constructor(_props: { foo: string }) {}
|
|
}
|
|
defineComponent({
|
|
components: { Comp }
|
|
})
|
|
})
|
|
})
|
|
|
|
describe('emits', () => {
|
|
// Note: for TSX inference, ideally we want to map emits to onXXX props,
|
|
// but that requires type-level string constant concatenation as suggested in
|
|
// https://github.com/Microsoft/TypeScript/issues/12754
|
|
|
|
// The workaround for TSX users is instead of using emits, declare onXXX props
|
|
// and call them instead. Since `v-on:click` compiles to an `onClick` prop,
|
|
// this would also support other users consuming the component in templates
|
|
// with `v-on` listeners.
|
|
|
|
// with object emits
|
|
defineComponent({
|
|
emits: {
|
|
click: (n: number) => typeof n === 'number',
|
|
input: (b: string) => b.length > 1
|
|
},
|
|
setup(props, { emit }) {
|
|
emit('click', 1)
|
|
emit('input', 'foo')
|
|
// @ts-expect-error
|
|
expectError(emit('nope'))
|
|
// @ts-expect-error
|
|
expectError(emit('click'))
|
|
// @ts-expect-error
|
|
expectError(emit('click', 'foo'))
|
|
// @ts-expect-error
|
|
expectError(emit('input'))
|
|
// @ts-expect-error
|
|
expectError(emit('input', 1))
|
|
},
|
|
created() {
|
|
this.$emit('click', 1)
|
|
this.$emit('input', 'foo')
|
|
// @ts-expect-error
|
|
expectError(this.$emit('nope'))
|
|
// @ts-expect-error
|
|
expectError(this.$emit('click'))
|
|
// @ts-expect-error
|
|
expectError(this.$emit('click', 'foo'))
|
|
// @ts-expect-error
|
|
expectError(this.$emit('input'))
|
|
// @ts-expect-error
|
|
expectError(this.$emit('input', 1))
|
|
}
|
|
})
|
|
|
|
// with array emits
|
|
defineComponent({
|
|
emits: ['foo', 'bar'],
|
|
setup(props, { emit }) {
|
|
emit('foo')
|
|
emit('foo', 123)
|
|
emit('bar')
|
|
// @ts-expect-error
|
|
expectError(emit('nope'))
|
|
},
|
|
created() {
|
|
this.$emit('foo')
|
|
this.$emit('foo', 123)
|
|
this.$emit('bar')
|
|
// @ts-expect-error
|
|
expectError(this.$emit('nope'))
|
|
}
|
|
})
|
|
|
|
// without emits
|
|
defineComponent({
|
|
setup(props, { emit }) {
|
|
emit('test', 1)
|
|
emit('test')
|
|
}
|
|
})
|
|
|
|
// emit should be valid when ComponentPublicInstance is used.
|
|
const instance = {} as ComponentPublicInstance
|
|
instance.$emit('test', 1)
|
|
instance.$emit('test')
|
|
|
|
// `this` should be void inside of emits validators
|
|
defineComponent({
|
|
props: ['bar'],
|
|
emits: {
|
|
foo(): boolean {
|
|
// @ts-expect-error
|
|
return this.bar === 3
|
|
}
|
|
}
|
|
})
|
|
})
|
|
|
|
describe('componentOptions setup should be `SetupContext`', () => {
|
|
expect<ComponentOptions['setup']>({} as (
|
|
props: Record<string, any>,
|
|
ctx: SetupContext
|
|
) => any)
|
|
})
|
|
|
|
describe('extract instance type', () => {
|
|
const Base = defineComponent({
|
|
props: {
|
|
baseA: {
|
|
type: Number,
|
|
default: 1
|
|
}
|
|
}
|
|
})
|
|
const MixinA = defineComponent({
|
|
props: {
|
|
mA: {
|
|
type: String,
|
|
default: ''
|
|
}
|
|
}
|
|
})
|
|
const CompA = defineComponent({
|
|
extends: Base,
|
|
mixins: [MixinA],
|
|
props: {
|
|
a: {
|
|
type: Boolean,
|
|
default: false
|
|
},
|
|
b: {
|
|
type: String,
|
|
required: true
|
|
},
|
|
c: Number
|
|
}
|
|
})
|
|
|
|
const compA = {} as InstanceType<typeof CompA>
|
|
|
|
expectType<boolean>(compA.a)
|
|
expectType<string>(compA.b)
|
|
expectType<number | undefined>(compA.c)
|
|
// mixins
|
|
expectType<string>(compA.mA)
|
|
// extends
|
|
expectType<number>(compA.baseA)
|
|
|
|
// @ts-expect-error
|
|
expectError((compA.a = true))
|
|
// @ts-expect-error
|
|
expectError((compA.b = 'foo'))
|
|
// @ts-expect-error
|
|
expectError((compA.c = 1))
|
|
// @ts-expect-error
|
|
expectError((compA.mA = 'foo'))
|
|
// @ts-expect-error
|
|
expectError((compA.baseA = 1))
|
|
})
|
|
|
|
describe('async setup', () => {
|
|
type GT = string & { __brand: unknown }
|
|
const Comp = defineComponent({
|
|
async setup() {
|
|
// setup context
|
|
return {
|
|
a: ref(1),
|
|
b: {
|
|
c: ref('hi')
|
|
},
|
|
d: reactive({
|
|
e: ref('hello' as GT)
|
|
})
|
|
}
|
|
},
|
|
render() {
|
|
// assert setup context unwrapping
|
|
expectType<number>(this.a)
|
|
expectType<string>(this.b.c.value)
|
|
expectType<GT>(this.d.e)
|
|
|
|
// setup context properties should be mutable
|
|
this.a = 2
|
|
}
|
|
})
|
|
|
|
const vm = {} as InstanceType<typeof Comp>
|
|
// assert setup context unwrapping
|
|
expectType<number>(vm.a)
|
|
expectType<string>(vm.b.c.value)
|
|
expectType<GT>(vm.d.e)
|
|
|
|
// setup context properties should be mutable
|
|
vm.a = 2
|
|
})
|