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This commit is contained in:
RMidhunSuresh 2022-06-07 13:28:56 +05:30
parent ba647d012d
commit d31f127982
1 changed files with 10 additions and 0 deletions
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10
src/domain/navigation/Navigation.ts
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@ -19,6 +19,16 @@ import {BaseObservableValue, ObservableValue} from "../../observable/ObservableV
type AllowsChild<T> = (parent: Segment<T> | undefined, child: Segment<T>) => boolean; type AllowsChild<T> = (parent: Segment<T> | undefined, child: Segment<T>) => boolean;
/**
* OptionalValue is basically stating that if SegmentType[type] = true:
* - Allow this type to be optional
* - Give it a default value of undefined
* - Also allow it to be true
* This lets us do:
* const s: Segment<SegmentType> = new Segment("create-room");
* instead of
* const s: Segment<SegmentType> = new Segment("create-room", undefined);
*/
export type OptionalValue<T> = T extends true? [(undefined | true)?]: [T]; export type OptionalValue<T> = T extends true? [(undefined | true)?]: [T];
export class Navigation<T extends object> { export class Navigation<T extends object> {