swatchjs-utils/dist/lib/api/parsers/numbers.js

Utilities for SwatchJS, a framework for easily creating and exposing APIs as methods

'use strict';

var _isNan = require('babel-runtime/core-js/number/is-nan');

var _isNan2 = _interopRequireDefault(_isNan);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var errors = require('../../errors');

var list = require('./list');
var optional = require('./optional');

// This parser is used for required number params,
//  and will reject undefined or non-numeric values
function parseNumber(param) {
  // Empty value should throw an error
  if (param === null || param === undefined) {
    throw new Error(errors.ERROR_CODE_INVALID_NUMBER);
  }

  var num = Number(param);
  if ((0, _isNan2.default)(num)) {
    throw new Error(errors.ERROR_CODE_INVALID_NUMBER);
  }
  return num;
}

// This parser is used for optional number params
function parseOptionalNumber(param) {
  return optional.parser(parseNumber)(param);
}

// This parser is used for required list of numbers params,
//  where every element in the list must be a required number
function parseNumberList(param) {
  return list.parser(parseNumber)(param);
}

// This parser is used for optional list of numbers params,
//  where every element in the list must be a required number
function parseOptionalNumberList(param) {
  return optional.parser(parseNumberList)(param);
}

module.exports = {
  parseNumber: parseNumber,
  parseNumberList: parseNumberList,
  parseOptionalNumber: parseOptionalNumber,
  parseOptionalNumberList: parseOptionalNumberList
};