feat(runtime-vapor): implement defineVaporCustomElement type inference

packages-private/dts-test/vapor/defineVaporCustomElement.test-d.ts

@@ -0,0 +1,162 @@
+import {
+  type VaporElementConstructor,
+  defineVaporComponent,
+  defineVaporCustomElement,
+} from 'vue'
+import { describe, expectType, test } from '../utils'
+
+describe('defineVaporCustomElement using defineVaporComponent return type', () => {
+  test('with object emits', () => {
+    const Comp1Vapor = defineVaporComponent({
+      props: {
+        a: String,
+      },
+      emits: {
+        click: () => true,
+      },
+    })
+    const Comp = defineVaporCustomElement(Comp1Vapor)
+    expectType<VaporElementConstructor>(Comp)
+
+    const instance = new Comp()
+    expectType<string | undefined>(instance.a)
+    instance.a = ''
+  })
+
+  test('with array emits', () => {
+    const Comp1Vapor = defineVaporComponent({
+      props: {
+        a: Number,
+      },
+      emits: ['click'],
+    })
+    const Comp = defineVaporCustomElement(Comp1Vapor)
+    expectType<VaporElementConstructor>(Comp)
+
+    const instance = new Comp()
+    expectType<number | undefined>(instance.a)
+    instance.a = 42
+  })
+
+  test('with required props', () => {
+    const Comp1Vapor = defineVaporComponent({
+      props: {
+        a: { type: Number, required: true },
+      },
+    })
+    const Comp = defineVaporCustomElement(Comp1Vapor)
+    expectType<VaporElementConstructor>(Comp)
+
+    const instance = new Comp()
+    expectType<number>(instance.a)
+    instance.a = 42
+  })
+
+  test('with default props', () => {
+    const Comp1Vapor = defineVaporComponent({
+      props: {
+        a: {
+          type: Number,
+          default: 1,
+          validator: () => true,
+        },
+      },
+      emits: ['click'],
+    })
+    const Comp = defineVaporCustomElement(Comp1Vapor)
+    expectType<VaporElementConstructor>(Comp)
+
+    const instance = new Comp()
+    expectType<number>(instance.a)
+    instance.a = 42
+  })
+})
+
+describe('defineVaporCustomElement with direct setup function', () => {
+  test('basic setup function', () => {
+    const Comp = defineVaporCustomElement((props: { msg: string }) => {
+      expectType<string>(props.msg)
+      return []
+    })
+    expectType<VaporElementConstructor<{ msg: string }>>(Comp)
+
+    const instance = new Comp()
+    expectType<string>(instance.msg)
+  })
+
+  test('setup function with emits', () => {
+    const Comp = defineVaporCustomElement(
+      (props: { msg: string }, ctx) => {
+        ctx.emit('foo')
+        return []
+      },
+      {
+        emits: ['foo'],
+      },
+    )
+    expectType<VaporElementConstructor<{ msg: string }>>(Comp)
+
+    const instance = new Comp()
+    expectType<string>(instance.msg)
+  })
+})
+
+describe('defineVaporCustomElement with options object', () => {
+  test('with object props', () => {
+    const Comp = defineVaporCustomElement({
+      props: {
+        foo: String,
+        bar: {
+          type: Number,
+          required: true,
+        },
+      },
+      setup(props) {
+        expectType<string | undefined>(props.foo)
+        expectType<number>(props.bar)
+      },
+    })
+    expectType<VaporElementConstructor>(Comp)
+
+    const instance = new Comp()
+    expectType<string | undefined>(instance.foo)
+    expectType<number>(instance.bar)
+  })
+
+  test('with array props', () => {
+    const Comp = defineVaporCustomElement({
+      props: ['foo', 'bar'],
+      setup(props) {
+        expectType<any>(props.foo)
+        expectType<any>(props.bar)
+      },
+    })
+    expectType<VaporElementConstructor>(Comp)
+
+    const instance = new Comp()
+    expectType<any>(instance.foo)
+    expectType<any>(instance.bar)
+  })
+
+  test('with emits', () => {
+    const Comp = defineVaporCustomElement({
+      props: {
+        value: String,
+      },
+      emits: {
+        change: (val: string) => true,
+      },
+      setup(props, { emit }) {
+        emit('change', 'test')
+        // @ts-expect-error
+        emit('change', 123)
+        // @ts-expect-error
+        emit('unknown')
+      },
+    })
+    expectType<VaporElementConstructor>(Comp)
+
+    const instance = new Comp()
+    expectType<string | undefined>(instance.value)
+  })
+})