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/**
* Memoizes the provided three-argument function.
*/
export function memoize3(fn) {
let cache0;
return function memoized(a1, a2, a3) {
if (cache0 === undefined) {
cache0 = new WeakMap();
}
let cache1 = cache0.get(a1);
if (cache1 === undefined) {
cache1 = new WeakMap();
cache0.set(a1, cache1);
}
let cache2 = cache1.get(a2);
if (cache2 === undefined) {
cache2 = new WeakMap();
cache1.set(a2, cache2);
}
let fnResult = cache2.get(a3);
if (fnResult === undefined) {
fnResult = fn(a1, a2, a3);
cache2.set(a3, fnResult);
}
return fnResult;
};
}