31 lines
767 B
JavaScript
31 lines
767 B
JavaScript
export const holder = new WeakMap();
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export const rootInstanceSymbol = Symbol('rootInstance');
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/**
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* Register an object as a root instance.
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*
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* @param {object} object An object to associate with root instance flag.
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*/
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export function registerAsRootInstance(object) {
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holder.set(object, true);
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}
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/**
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* Check if the source of the root indication call is valid.
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*
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* @param {symbol} rootSymbol A symbol as a source of truth.
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* @returns {boolean}
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*/
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export function hasValidParameter(rootSymbol) {
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return rootSymbol === rootInstanceSymbol;
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}
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/**
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* Check if passed an object was flagged as a root instance.
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*
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* @param {object} object An object to check.
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* @returns {boolean}
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*/
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export function isRootInstance(object) {
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return holder.has(object);
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} |