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types(reactivity): Simplify the SymbolExtract (#4162)

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2021-07-28 23:12:46 +08:00
committed by GitHub
parent d2585e13e9
commit b79e4ca717
3 changed files with 69 additions and 44 deletions
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35
packages/reactivity/src/ref.ts
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@@ -274,36 +274,7 @@ type UnwrapRefSimple<T> = T extends
: T extends Array<any>
? { [K in keyof T]: UnwrapRefSimple<T[K]> }
: T extends object
? UnwrappedObject<T>
? {
[P in keyof T]: P extends symbol ? T[P] : UnwrapRef<T[P]>
}
: T
// Extract all known symbols from an object
// when unwrapping Object the symbols are not `in keyof`, this should cover all the
// known symbols
type SymbolExtract<T> = (T extends { [Symbol.asyncIterator]: infer V }
? { [Symbol.asyncIterator]: V }
: {}) &
(T extends { [Symbol.hasInstance]: infer V }
? { [Symbol.hasInstance]: V }
: {}) &
(T extends { [Symbol.isConcatSpreadable]: infer V }
? { [Symbol.isConcatSpreadable]: V }
: {}) &
(T extends { [Symbol.iterator]: infer V } ? { [Symbol.iterator]: V } : {}) &
(T extends { [Symbol.match]: infer V } ? { [Symbol.match]: V } : {}) &
(T extends { [Symbol.matchAll]: infer V } ? { [Symbol.matchAll]: V } : {}) &
(T extends { [Symbol.replace]: infer V } ? { [Symbol.replace]: V } : {}) &
(T extends { [Symbol.search]: infer V } ? { [Symbol.search]: V } : {}) &
(T extends { [Symbol.species]: infer V } ? { [Symbol.species]: V } : {}) &
(T extends { [Symbol.split]: infer V } ? { [Symbol.split]: V } : {}) &
(T extends { [Symbol.toPrimitive]: infer V }
? { [Symbol.toPrimitive]: V }
: {}) &
(T extends { [Symbol.toStringTag]: infer V }
? { [Symbol.toStringTag]: V }
: {}) &
(T extends { [Symbol.unscopables]: infer V }
? { [Symbol.unscopables]: V }
: {})
type UnwrappedObject<T> = { [P in keyof T]: UnwrapRef<T[P]> } & SymbolExtract<T>