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node_modules/lodash/_composeArgs.js 1.29 KB
f7563de62   Palak Handa   first commit
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  /* Built-in method references for those with the same name as other `lodash` methods. */
  var nativeMax = Math.max;
  
  /**
   * 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) {
    var argsIndex = -1,
        argsLength = args.length,
        holdersLength = holders.length,
        leftIndex = -1,
        leftLength = partials.length,
        rangeLength = nativeMax(argsLength - holdersLength, 0),
        result = Array(leftLength + rangeLength),
        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;
  }
  
  module.exports = composeArgs;