43 lines
1.5 KiB
TypeScript
43 lines
1.5 KiB
TypeScript
'use strict';
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import { SHOULD_BE_USE_WEB } from './PlatformChecker';
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import type { SerializableRef } from './workletTypes';
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/**
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* This symbol is used to represent a mapping from the value to itself.
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*
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* It's used to prevent converting a serializable that's already converted - for
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* example a Shared Value that's in worklet's closure.
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*/
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export const serializableMappingFlag = Symbol('serializable flag');
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/*
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During a fast refresh, React holds the same instance of a Mutable
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(that's guaranteed by `useRef`) but `serializableCache` gets regenerated and thus
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becoming empty. This happens when editing the file that contains the definition of this cache.
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Because of it, `createSerializable` can't find given mapping
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in `serializableCache` for the Mutable and tries to clone it as if it was a regular JS object.
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During cloning we use `Object.entries` to iterate over the keys which throws an error on accessing `_value`.
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For convenience we moved this cache to a separate file so it doesn't scare us with red squiggles.
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*/
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const cache = SHOULD_BE_USE_WEB
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? null
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: new WeakMap<object, SerializableRef | symbol>();
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export const serializableMappingCache = SHOULD_BE_USE_WEB
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? {
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set() {
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// NOOP
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},
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get() {
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return null;
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},
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}
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: {
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set(serializable: object, serializableRef?: SerializableRef): void {
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cache!.set(serializable, serializableRef || serializableMappingFlag);
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},
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get: cache!.get.bind(cache),
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};
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