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//// [vueLikeDataAndPropsInference2.ts]
interface Instance {
_instanceBrand: never
}
type DataDef<Data, Props> = (this: Readonly<Props> & Instance) => Data
type PropsDefinition<T> = {
[K in keyof T]: T[K]
}
interface Options<
Data = object | ((this: Instance) => object),
PropsDef = PropsDefinition<Record<string, any>>
> {
data?: Data
props?: PropsDef
watch?: Record<string, WatchHandler<any>>
}
type WatchHandler<T> = (val: T, oldVal: T) => void;
type ThisTypedOptions<Data, Props> =
object &
Options<DataDef<Data, Props>, PropsDefinition<Props>> &
ThisType<Data & Readonly<Props> & Instance>
declare function test<Data, Props>(fn: ThisTypedOptions<Data, Props>): void;
declare function test(fn: Options): void;
test({
props: {
foo: ''
},
data(): { bar: boolean } {
return {
bar: true
}
},
watch: {
foo(newVal: string, oldVal: string): void {
this.bar = false
}
}
})
//// [vueLikeDataAndPropsInference2.js]
test({
props: {
foo: ''
},
data: function () {
return {
bar: true
};
},
watch: {
foo: function (newVal, oldVal) {
this.bar = false;
}
}
});
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