dynatrace-cordova-outsystems-plugin/node_modules/lodash/_createFlow.js

This plugin gives you the ability to use the Dynatrace instrumentation in your hybrid application (Cordova, Ionic, ..). It uses the Mobile Agent, the JavaScript Agent and the Javascript Bridge. The Mobile Agent will give you all device specific values con

var LodashWrapper = require('./_LodashWrapper'),
    flatRest = require('./_flatRest'),
    getData = require('./_getData'),
    getFuncName = require('./_getFuncName'),
    isArray = require('./isArray'),
    isLaziable = require('./_isLaziable');

/** Error message constants. */
var FUNC_ERROR_TEXT = 'Expected a function';

/** Used to compose bitmasks for function metadata. */
var WRAP_CURRY_FLAG = 8,
    WRAP_PARTIAL_FLAG = 32,
    WRAP_ARY_FLAG = 128,
    WRAP_REARG_FLAG = 256;

/**
 * Creates a `_.flow` or `_.flowRight` function.
 *
 * @private
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new flow function.
 */
function createFlow(fromRight) {
  return flatRest(function(funcs) {
    var length = funcs.length,
        index = length,
        prereq = LodashWrapper.prototype.thru;

    if (fromRight) {
      funcs.reverse();
    }
    while (index--) {
      var func = funcs[index];
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
        var wrapper = new LodashWrapper([], true);
      }
    }
    index = wrapper ? index : length;
    while (++index < length) {
      func = funcs[index];

      var funcName = getFuncName(func),
          data = funcName == 'wrapper' ? getData(func) : undefined;

      if (data && isLaziable(data[0]) &&
            data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
            !data[4].length && data[9] == 1
          ) {
        wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
      } else {
        wrapper = (func.length == 1 && isLaziable(func))
          ? wrapper[funcName]()
          : wrapper.thru(func);
      }
    }
    return function() {
      var args = arguments,
          value = args[0];

      if (wrapper && args.length == 1 && isArray(value)) {
        return wrapper.plant(value).value();
      }
      var index = 0,
          result = length ? funcs[index].apply(this, args) : value;

      while (++index < length) {
        result = funcs[index].call(this, result);
      }
      return result;
    };
  });
}

module.exports = createFlow;