@lyra/form-builder/lib/utils/resolveJSType.js

Lyra form builder

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.resolveJSType = resolveJSType;
const toString = Object.prototype.toString;
// Copied from https://github.com/ForbesLindesay/type-of, but inlined to have fine grained control

function resolveJSType(val) {
  switch (toString.call(val)) {
    case '[object Function]':
      return 'function';
    case '[object Date]':
      return 'date';
    case '[object RegExp]':
      return 'regexp';
    case '[object Arguments]':
      return 'arguments';
    case '[object Array]':
      return 'array';
    case '[object String]':
      return 'string';
    default:
  }

  if (typeof val == 'object' && val && typeof val.length == 'number') {
    try {
      if (typeof val.callee == 'function') {
        // eslint-disable-line max-depth
        return 'arguments';
      }
    } catch (ex) {
      if (ex instanceof TypeError) {
        // eslint-disable-line max-depth
        return 'arguments';
      }
    }
  }

  if (val === null) {
    return 'null';
  }

  if (val === undefined) {
    return 'undefined';
  }

  if (val && val.nodeType === 1) {
    return 'element';
  }

  if (val === Object(val)) {
    return 'object';
  }

  return typeof val;
}