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Better types with branding #66

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Better types with branding #66

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14 changes: 12 additions & 2 deletions types/index.d.ts
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Original file line number Diff line number Diff line change
@@ -1,7 +1,17 @@
declare module '@nx-js/observer-util' {
function observable<Observable extends object>(obj?: Observable): Observable
class ObservableBrand {
protected __OBSERVABLE_NOMINAL_BRAND: never;
}

type Observed<T> = T & ObservableBrand;

type MonoObserved<T> = T extends Observed<infer U>
? MonoObserved<U>
: T;

function observable<Observable extends object>(obj?: Observable): Observed<MonoObserved<Observable>>
function isObservable(obj: object): boolean
function raw<Observable extends object>(obj: Observable): Observable
function raw<Observable extends object>(obj: Observable): Observable extends Observed<infer T> ? MonoObserved<T> : Observable;

interface Scheduler {
add: Function
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