@graphql-tools/graphql/esm/jsutils/memoize1.js

Fork of GraphQL.js

/**
 * Memoizes the provided one-argument function.
 */
export function memoize1(fn) {
    const memoize1cache = new WeakMap();
    return function memoized(a1) {
        const cachedValue = memoize1cache.get(a1);
        if (cachedValue === undefined) {
            const newValue = fn(a1);
            memoize1cache.set(a1, newValue);
            return newValue;
        }
        return cachedValue;
    };
}