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Improve IndexableBoolean type

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This commit is contained in:
Daniel Gasienica 2018-04-14 21:08:36 -04:00
parent 809e34b0f4
commit c6904476f4
1 changed files with 7 additions and 2 deletions
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9
ts/types/IndexedDB.ts
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@ -6,7 +6,12 @@
// to `0`.
// N.B. Using `undefined` allows excluding an entry from an index. Useful
// when index size is a consideration or one only needs to query for `true`.
export type IndexableBoolean = 1 | 0;
export type IndexableBoolean = IndexableFalse | IndexableTrue;
type IndexableTrue = 1;
type IndexableFalse = 0;
export const INDEXABLE_FALSE: IndexableFalse = 0;
export const INDEXABLE_TRUE: IndexableTrue = 1;
export const toIndexableBoolean = (value: boolean): IndexableBoolean =>
value ? 1 : 0;
value ? INDEXABLE_TRUE : INDEXABLE_FALSE;