feat: add Object.entries

Author: medikoo

object/entries/implement.js

@@ -0,0 +1,10 @@
+"use strict";
+
+if (!require("./is-implemented")()) {
+	Object.defineProperty(Object, "entries", {
+		value: require("./shim"),
+		configurable: true,
+		enumerable: false,
+		writable: true
+	});
+}

object/entries/index.js

@@ -0,0 +1,3 @@
+"use strict";
+
+module.exports = require("./is-implemented")() ? Object.entries : require("./shim");

object/entries/is-implemented.js

@@ -0,0 +1,9 @@
+"use strict";
+
+module.exports = function () {
+	try {
+		return Object.entries({ foo: 12 })[0][0] === "foo";
+	} catch (e) {
+		return false;
+	}
+};

object/entries/shim.js

@@ -0,0 +1,14 @@
+"use strict";
+
+var ensureValue = require("../valid-value");
+
+module.exports = function (object) {
+	ensureValue(object);
+	var result = [];
+	object = Object(object);
+	for (var key in object) {
+		if (!propertyIsEnumerable.call(object, key)) continue;
+		result.push([key, object[key]]);
+	}
+	return result;
+};

object/index.js

@@ -18,6 +18,7 @@ module.exports = {
 	ensurePlainFunction: require("./ensure-plain-function"),
 	ensurePromise: require("./ensure-promise"),
 	ensureThenable: require("./ensure-thenable"),
+	entries: require("./entries"),
 	eq: require("./eq"),
 	every: require("./every"),
 	filter: require("./filter"),

test/object/entries/implement.js

@@ -0,0 +1,5 @@
+"use strict";
+
+var isImplemented = require("../../../object/entries/is-implemented");
+
+module.exports = function (a) { a(isImplemented(), true); };

test/object/entries/index.js

@@ -0,0 +1,3 @@
+"use strict";
+
+module.exports = require("./shim");

test/object/entries/is-implemented.js

@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = function (t, a) {
+ a(typeof t(), "boolean");
+};

test/object/entries/shim.js

@@ -0,0 +1,8 @@
+"use strict";
+
+module.exports = function (t, a) {
+	a.deep(t({ foo: "bar" }), [["foo", "bar"]], "Object");
+	a.deep(t("raz"), [["0", "r"], ["1", "a"], ["2", "z"]], "Primitive");
+	a.throws(function () { t(); }, TypeError, "Undefined");
+	a.throws(function () { t(null); }, TypeError, "Undefined");
+};