series-processing/lib/studies/subtract.js

Time-series processing for forex, market analysis, including MA, EMA,...

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

/**
 * Subtract 2 series
 *
 * <output series> = <input 1 series> - <input 2 series>
 */
var subtract = exports.subtract = function subtract(outputKey, inputKey1, inputKey2) {
  return function (record) {
    if (typeof record === 'undefined') {
      return null;
    }
    return _defineProperty({}, outputKey, (record[inputKey1] || 0) - (record[inputKey2] || 0));
  };
};