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Diffstat (limited to 'addon-sdk/source/lib/sdk/util/object.js')
-rw-r--r-- | addon-sdk/source/lib/sdk/util/object.js | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/addon-sdk/source/lib/sdk/util/object.js b/addon-sdk/source/lib/sdk/util/object.js deleted file mode 100644 index 9d202bb51..000000000 --- a/addon-sdk/source/lib/sdk/util/object.js +++ /dev/null @@ -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; |