@sanity/desk-tool/lib/utils/memoBind.js

Tool for managing all sorts of content in a structured manner

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.memoBind = memoBind;
/* eslint-disable @typescript-eslint/ban-types */

// `WeakMap`s require the first type param to extend `object`
var bindCache = new WeakMap();

/**
 * An alternative to `obj.method.bind(obj)` that utilizes a weakmap to return
 * the same memory reference for sequent binds.
 */

function memoBind(obj, methodKey) {
  var boundMethods = bindCache.get(obj) || new Map();
  if (boundMethods) {
    var _bound = boundMethods.get(methodKey);
    if (_bound) return _bound;
  }
  var method = obj[methodKey];
  if (typeof method !== 'function') {
    throw new Error("Expected property `".concat(methodKey, "` to be a function but got ").concat(typeof method, " instead."));
  }
  var bound = method.bind(obj);
  boundMethods.set(methodKey, bound);
  bindCache.set(obj, boundMethods);
  return bound;
}