Move Add-on SDK source to toolkit/jetpack

addon-sdk/source/lib/sdk/util/object.js

@@ -1,104 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-"use strict";
-
-module.metadata = {
-  "stability": "unstable"
-};
-
-const { flatten } = require('./array');
-
-/**
- * Merges all the properties of all arguments into first argument. If two or
- * more argument objects have own properties with the same name, the property
- * is overridden, with precedence from right to left, implying, that properties
- * of the object on the left are overridden by a same named property of the
- * object on the right.
- *
- * Any argument given with "falsy" value - commonly `null` and `undefined` in
- * case of objects - are skipped.
- *
- * @examples
- *    var a = { bar: 0, a: 'a' }
- *    var b = merge(a, { foo: 'foo', bar: 1 }, { foo: 'bar', name: 'b' });
- *    b === a   // true
- *    b.a       // 'a'
- *    b.foo     // 'bar'
- *    b.bar     // 1
- *    b.name    // 'b'
- */
-function merge(source) {
-  let descriptor = {};
-
-  // `Boolean` converts the first parameter to a boolean value. Any object is
-  // converted to `true` where `null` and `undefined` becames `false`. Therefore
-  // the `filter` method will keep only objects that are defined and not null.
-  Array.slice(arguments, 1).filter(Boolean).forEach(function onEach(properties) {
-    getOwnPropertyIdentifiers(properties).forEach(function(name) {
-      descriptor[name] = Object.getOwnPropertyDescriptor(properties, name);
-    });
-  });
-  return Object.defineProperties(source, descriptor);
-}
-exports.merge = merge;
-
-/**
- * Returns an object that inherits from the first argument and contains all the
- * properties from all following arguments.
- * `extend(source1, source2, source3)` is equivalent of
- * `merge(Object.create(source1), source2, source3)`.
- */
-function extend(source) {
-  let rest = Array.slice(arguments, 1);
-  rest.unshift(Object.create(source));
-  return merge.apply(null, rest);
-}
-exports.extend = extend;
-
-function has(obj, key) {
-  return obj.hasOwnProperty(key);
-}
-exports.has = has;
-
-function each(obj, fn) {
-  for (let key in obj) has(obj, key) && fn(obj[key], key, obj);
-}
-exports.each = each;
-
-/**
- * Like `merge`, except no property descriptors are manipulated, for use
- * with platform objects. Identical to underscore's `extend`. Useful for
- * merging XPCOM objects
- */
-function safeMerge(source) {
-  Array.slice(arguments, 1).forEach(function onEach (obj) {
-    for (let prop in obj) source[prop] = obj[prop];
-  });
-  return source;
-}
-exports.safeMerge = safeMerge;
-
-/*
- * Returns a copy of the object without omitted properties
- */
-function omit(source, ...values) {
-  let copy = {};
-  let keys = flatten(values);
-  for (let prop in source)
-    if (!~keys.indexOf(prop))
-      copy[prop] = source[prop];
-  return copy;
-}
-exports.omit = omit;
-
-// get object's own property Symbols and/or Names, including nonEnumerables by default
-function getOwnPropertyIdentifiers(object, options = { names: true, symbols: true, nonEnumerables: true }) {
-  const symbols = !options.symbols ? [] :
-                  Object.getOwnPropertySymbols(object);
-  const names = !options.names ? [] :
-                options.nonEnumerables ? Object.getOwnPropertyNames(object) :
-                Object.keys(object);
-  return [...names, ...symbols];
-}
-exports.getOwnPropertyIdentifiers = getOwnPropertyIdentifiers;