Created
May 8, 2020 13:27
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Immutable.js ImmutableFrom TS helper
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import { Map } from 'immutable'; | |
type ExpectedPrimitive = boolean | number | string | symbol | null; | |
/** | |
* Generic конвертор неиммутабельного интерфейса в иммутабельный. | |
* В отличие от RecordOf вычисляет return type для getIn и вложенных полей. | |
*/ | |
// eslint-disable-next-line @typescript-eslint/no-explicit-any | |
export interface ImmutableFrom<Interface> extends Map<string, any> { | |
toJS(): Interface; | |
get<K extends keyof Interface, D>( | |
key: K, | |
defaultValue?: D, | |
): Interface[K] extends object | |
? ImmutableFrom<Interface[K]> | |
: Interface[K] extends ExpectedPrimitive | |
? Interface[K] | |
: D; | |
getIn<TKey1 extends keyof Interface, TKey2 extends keyof Interface[TKey1], D>( | |
path: [TKey1, TKey2], | |
defaultValue?: D, | |
): Interface[TKey1][TKey2] extends object | |
? ImmutableFrom<Interface[TKey1][TKey2]> | |
: Interface[TKey1][TKey2] extends ExpectedPrimitive | |
? Interface[TKey1][TKey2] | |
: never; | |
} |
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