dot.dot.dot.exampol

node_modules/traverse/test/lib/deep_equal.js

@@ -0,0 +1,87 @@
+'use strict';
+
+var traverse = require('../../');
+
+function toS(o) {
+	return Object.prototype.toString.call(o);
+}
+
+module.exports = function (a, b) {
+	if (arguments.length !== 2) {
+		throw new Error('deepEqual requires exactly two objects to compare against');
+	}
+
+	var equal = true;
+	function notEqual() {
+		equal = false;
+		// this.stop();
+		return undefined;
+	}
+
+	var node = b;
+
+	traverse(a).forEach(function (y) { // eslint-disable-line consistent-return
+
+		// if (node === undefined || node === null) return notEqual();
+
+		if (!this.isRoot) {
+			/*
+            if (!Object.hasOwnProperty.call(node, this.key)) {
+                return notEqual();
+            }
+        */
+			if (typeof node !== 'object') { return notEqual(); }
+			node = node[this.key];
+		}
+
+		var x = node;
+
+		this.post(function () {
+			node = x;
+		});
+
+		if (this.circular) {
+			if (traverse(b).get(this.circular.path) !== x) { notEqual(); }
+		} else if (typeof x !== typeof y) {
+			notEqual();
+		} else if (x === null || y === null || x === undefined || y === undefined) {
+			if (x !== y) { notEqual(); }
+		} else if (x.__proto__ !== y.__proto__) {
+			notEqual();
+		} else if (x === y) {
+			// nop
+		} else if (typeof x === 'function') {
+			if (x instanceof RegExp) {
+				// both regexps on account of the __proto__ check
+				if (String(x) !== String(y)) { notEqual(); }
+			} else if (x !== y) { notEqual(); }
+		} else if (typeof x === 'object') {
+			if (toS(y) === '[object Arguments]'
+            || toS(x) === '[object Arguments]') {
+				if (toS(x) !== toS(y)) {
+					notEqual();
+				}
+			} else if (toS(y) === '[object RegExp]'
+            || toS(x) === '[object RegExp]') {
+				if (!x || !y || x.toString() !== y.toString()) { notEqual(); }
+			} else if (x instanceof Date || y instanceof Date) {
+				if (!(x instanceof Date) || !(y instanceof Date)
+                || x.getTime() !== y.getTime()) {
+					notEqual();
+				}
+			} else {
+				var kx = Object.keys(x);
+				var ky = Object.keys(y);
+				if (kx.length !== ky.length) { return notEqual(); }
+				for (var i = 0; i < kx.length; i++) {
+					var k = kx[i];
+					if (!Object.hasOwnProperty.call(y, k)) {
+						notEqual();
+					}
+				}
+			}
+		}
+	});
+
+	return equal;
+};