github-pages-deploy-action/node_modules/graphql/jsutils/memoize3.mjs

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2020-03-07 11:45:40 +08:00
/**
* Memoizes the provided three-argument function.
*/
export default function memoize3(fn) {
var cache0;
function memoized(a1, a2, a3) {
if (!cache0) {
cache0 = new WeakMap();
}
var cache1 = cache0.get(a1);
var cache2;
if (cache1) {
cache2 = cache1.get(a2);
if (cache2) {
var cachedValue = cache2.get(a3);
if (cachedValue !== undefined) {
return cachedValue;
}
}
} else {
cache1 = new WeakMap();
cache0.set(a1, cache1);
}
if (!cache2) {
cache2 = new WeakMap();
cache1.set(a2, cache2);
}
var newValue = fn(a1, a2, a3);
cache2.set(a3, newValue);
return newValue;
}
return memoized;
}