@antv/layout/lib/node_modules/lodash/isPlainObject.js

graph layout algorithm

import { __require as require_baseGetTag } from './_baseGetTag.js';
import { __require as require_getPrototype } from './_getPrototype.js';
import { __require as requireIsObjectLike } from './isObjectLike.js';

var isPlainObject_1;
var hasRequiredIsPlainObject;

function requireIsPlainObject () {
	if (hasRequiredIsPlainObject) return isPlainObject_1;
	hasRequiredIsPlainObject = 1;
	var baseGetTag = require_baseGetTag(),
	    getPrototype = require_getPrototype(),
	    isObjectLike = requireIsObjectLike();

	/** `Object#toString` result references. */
	var objectTag = '[object Object]';

	/** Used for built-in method references. */
	var funcProto = Function.prototype,
	    objectProto = Object.prototype;

	/** Used to resolve the decompiled source of functions. */
	var funcToString = funcProto.toString;

	/** Used to check objects for own properties. */
	var hasOwnProperty = objectProto.hasOwnProperty;

	/** Used to infer the `Object` constructor. */
	var objectCtorString = funcToString.call(Object);

	/**
	 * Checks if `value` is a plain object, that is, an object created by the
	 * `Object` constructor or one with a `[[Prototype]]` of `null`.
	 *
	 * @static
	 * @memberOf _
	 * @since 0.8.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
	 * @example
	 *
	 * function Foo() {
	 *   this.a = 1;
	 * }
	 *
	 * _.isPlainObject(new Foo);
	 * // => false
	 *
	 * _.isPlainObject([1, 2, 3]);
	 * // => false
	 *
	 * _.isPlainObject({ 'x': 0, 'y': 0 });
	 * // => true
	 *
	 * _.isPlainObject(Object.create(null));
	 * // => true
	 */
	function isPlainObject(value) {
	  if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
	    return false;
	  }
	  var proto = getPrototype(value);
	  if (proto === null) {
	    return true;
	  }
	  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
	  return typeof Ctor == 'function' && Ctor instanceof Ctor &&
	    funcToString.call(Ctor) == objectCtorString;
	}

	isPlainObject_1 = isPlainObject;
	return isPlainObject_1;
}

export { requireIsPlainObject as __require };
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