@pothos/core/lib/utils/context-cache.js

Pothos (formerly GiraphQL) is a plugin based schema builder for creating code-first GraphQL schemas in typescript

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
function _export(target, all) {
    for(var name in all)Object.defineProperty(target, name, {
        enumerable: true,
        get: all[name]
    });
}
_export(exports, {
    contextCacheSymbol: function() {
        return contextCacheSymbol;
    },
    createContextCache: function() {
        return createContextCache;
    },
    initContextCache: function() {
        return initContextCache;
    }
});
const contextCacheSymbol = Symbol.for('Pothos.contextCache');
function initContextCache() {
    return {
        [contextCacheSymbol]: {}
    };
}
function createContextCache(create) {
    const cache = new WeakMap();
    const getOrCreate = (context, ...args)=>{
        const cacheKey = context[contextCacheSymbol] || context;
        if (cache.has(cacheKey)) {
            return cache.get(cacheKey);
        }
        const entry = create(context, ...args);
        cache.set(cacheKey, entry);
        return entry;
    };
    getOrCreate.delete = (context)=>{
        const cacheKey = context[contextCacheSymbol] || context;
        cache.delete(cacheKey);
    };
    return getOrCreate;
}

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