42 lines
753 B
JavaScript
42 lines
753 B
JavaScript
'use strict';
|
|
|
|
Object.defineProperty(exports, '__esModule', {
|
|
value: true,
|
|
});
|
|
exports.memoize3 = memoize3;
|
|
|
|
/**
|
|
* Memoizes the provided three-argument function.
|
|
*/
|
|
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;
|
|
};
|
|
}
|