source: trip-planner-front/node_modules/lodash/_createPartial.js@ bdd6491

Last change on this file since bdd6491 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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1var apply = require('./_apply'),
2 createCtor = require('./_createCtor'),
3 root = require('./_root');
4
5/** Used to compose bitmasks for function metadata. */
6var WRAP_BIND_FLAG = 1;
7
8/**
9 * Creates a function that wraps `func` to invoke it with the `this` binding
10 * of `thisArg` and `partials` prepended to the arguments it receives.
11 *
12 * @private
13 * @param {Function} func The function to wrap.
14 * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
15 * @param {*} thisArg The `this` binding of `func`.
16 * @param {Array} partials The arguments to prepend to those provided to
17 * the new function.
18 * @returns {Function} Returns the new wrapped function.
19 */
20function createPartial(func, bitmask, thisArg, partials) {
21 var isBind = bitmask & WRAP_BIND_FLAG,
22 Ctor = createCtor(func);
23
24 function wrapper() {
25 var argsIndex = -1,
26 argsLength = arguments.length,
27 leftIndex = -1,
28 leftLength = partials.length,
29 args = Array(leftLength + argsLength),
30 fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
31
32 while (++leftIndex < leftLength) {
33 args[leftIndex] = partials[leftIndex];
34 }
35 while (argsLength--) {
36 args[leftIndex++] = arguments[++argsIndex];
37 }
38 return apply(fn, isBind ? thisArg : this, args);
39 }
40 return wrapper;
41}
42
43module.exports = createPartial;
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