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Unify Derivation and Prism 10/n

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This commit is contained in:
Aria Minaei 2022-12-01 14:54:10 +01:00
parent 53ab4dbf9d
commit 1236900ddf
1 changed files with 4 additions and 4 deletions
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8
packages/dataverse/src/Box.ts
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@ -33,12 +33,12 @@ export interface IBox<V> {
* Wraps a single value. * Wraps a single value.
* *
* @remarks * @remarks
* Derivations created with {@link Box.prism} update based on strict equality (`===`) of the old value and the new one. * Prisms created with {@link Box.prism} update based on strict equality (`===`) of the old value and the new one.
* This also means that property-changes of objects won't be tracked, and that for objects, updates will trigger on changes of * This also means that property-changes of objects won't be tracked, and that for objects, updates will trigger on changes of
* reference even if the objects are structurally equal. * reference even if the objects are structurally equal.
*/ */
export default class Box<V> implements IBox<V> { export default class Box<V> implements IBox<V> {
private _publicDerivation: Prism<V> private _publicPrism: Prism<V>
private _emitter = new Emitter<V>() private _emitter = new Emitter<V>()
/** /**
@ -53,7 +53,7 @@ export default class Box<V> implements IBox<V> {
const subscribe = (listener: (val: V) => void) => const subscribe = (listener: (val: V) => void) =>
this._emitter.tappable.tap(listener) this._emitter.tappable.tap(listener)
const getValue = () => this._value const getValue = () => this._value
this._publicDerivation = prism(() => { this._publicPrism = prism(() => {
return prism.source(subscribe, getValue) return prism.source(subscribe, getValue)
}) })
} }
@ -85,6 +85,6 @@ export default class Box<V> implements IBox<V> {
* Returns a prism of the Box that you can use to track changes to it. * Returns a prism of the Box that you can use to track changes to it.
*/ */
get prism() { get prism() {
return this._publicDerivation return this._publicPrism
} }
} }