47 lines
1.7 KiB
TypeScript
47 lines
1.7 KiB
TypeScript
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declare namespace Van {
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interface State<T> {
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val: T
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readonly oldVal: T
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readonly rawVal: T
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}
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// Defining readonly view of State<T> for covariance.
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// Basically we want StateView<string> to implement StateView<string | number>
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type StateView<T> = Readonly<State<T>>
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type Val<T> = State<T> | T
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type Primitive = string | number | boolean | bigint
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// deno-lint-ignore no-explicit-any
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type PropValue = Primitive | ((e: any) => void) | null
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type PropValueOrDerived = PropValue | StateView<PropValue> | (() => PropValue)
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type Props = Record<string, PropValueOrDerived> & { class?: PropValueOrDerived; is?: string }
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type PropsWithKnownKeys<ElementType> = Partial<{[K in keyof ElementType]: PropValueOrDerived}>
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type ValidChildDomValue = Primitive | Node | null | undefined
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type BindingFunc = ((dom?: Node) => ValidChildDomValue) | ((dom?: Element) => Element)
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type ChildDom = ValidChildDomValue | StateView<Primitive | null | undefined> | BindingFunc | readonly ChildDom[]
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type TagFunc<Result> = (first?: Props & PropsWithKnownKeys<Result> | ChildDom, ...rest: readonly ChildDom[]) => Result
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type Tags = Readonly<Record<string, TagFunc<Element>>> & {
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[K in keyof HTMLElementTagNameMap]: TagFunc<HTMLElementTagNameMap[K]>
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}
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}
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declare namespace VanX
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{
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type StateOf<T> = { readonly [K in keyof T]: Van.State<T[K]> }
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type ValueType<T> = T extends (infer V)[] ? V : T[keyof T]
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type KeyType<T> = T extends unknown[] ? number : string
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type ReplacementFunc<T> =
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T extends (infer V)[] ? (items: V[]) => readonly V[] :
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(items: [string, T[keyof T]][]) => readonly [string, T[keyof T]][]
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} |