@newdash/newdash/.internal/composeArgs.js

javascript/typescript utility library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Creates an array that is the composition of partially applied arguments,
 * placeholders, and provided arguments into a single array of arguments.
 *
 * @private
 * @param {Array} args The provided arguments.
 * @param {Array} partials The arguments to prepend to those provided.
 * @param {Array} holders The `partials` placeholder indexes.
 * @params {boolean} [isCurried] Specify composing for a curried function.
 * @returns {Array} Returns the new array of composed arguments.
 */
function composeArgs(args, partials, holders, isCurried) {
    const argsLength = args.length;
    const holdersLength = holders.length;
    const leftLength = partials.length;
    let argsIndex = -1;
    let leftIndex = -1;
    let rangeLength = Math.max(argsLength - holdersLength, 0);
    const result = new Array(leftLength + rangeLength);
    const isUncurried = !isCurried;
    while (++leftIndex < leftLength) {
        result[leftIndex] = partials[leftIndex];
    }
    while (++argsIndex < holdersLength) {
        if (isUncurried || argsIndex < argsLength) {
            result[holders[argsIndex]] = args[argsIndex];
        }
    }
    while (rangeLength--) {
        result[leftIndex++] = args[argsIndex++];
    }
    return result;
}
exports.default = composeArgs;