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Move Add-on SDK source to toolkit/jetpack

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NTD 2018-02-09 06:46:43 -05:00 • committed by Roy Tam
commit 23b67db438
993 changed files with 484 additions and 100663 deletions
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123
addon-sdk/source/lib/sdk/util/array.js
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/* 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": "experimental"
};
/**
* Returns `true` if given `array` contain given `element` or `false`
* otherwise.
* @param {Array} array
* Target array.
* @param {Object|String|Number|Boolean} element
* Element being looked up.
* @returns {Boolean}
*/
var has = exports.has = function has(array, element) {
// shorter and faster equivalent of `array.indexOf(element) >= 0`
return !!~array.indexOf(element);
};
var hasAny = exports.hasAny = function hasAny(array, elements) {
if (arguments.length < 2)
return false;
if (!Array.isArray(elements))
elements = [ elements ];
return array.some(function (element) {
return has(elements, element);
});
};
/**
* Adds given `element` to the given `array` if it does not contain it yet.
* `true` is returned if element was added otherwise `false` is returned.
* @param {Array} array
* Target array.
* @param {Object|String|Number|Boolean} element
* Element to be added.
* @returns {Boolean}
*/
var add = exports.add = function add(array, element) {
var result;
if ((result = !has(array, element)))
array.push(element);
return result;
};
/**
* Removes first occurrence of the given `element` from the given `array`. If
* `array` does not contain given `element` `false` is returned otherwise
* `true` is returned.
* @param {Array} array
* Target array.
* @param {Object|String|Number|Boolean} element
* Element to be removed.
* @returns {Boolean}
*/
exports.remove = function remove(array, element) {
var result;
if ((result = has(array, element)))
array.splice(array.indexOf(element), 1);
return result;
};
/**
* Produces a duplicate-free version of the given `array`.
* @param {Array} array
* Source array.
* @returns {Array}
*/
function unique(array) {
return array.reduce(function(result, item) {
add(result, item);
return result;
}, []);
};
exports.unique = unique;
/**
* Produce an array that contains the union: each distinct element from all
* of the passed-in arrays.
*/
function union() {
return unique(Array.concat.apply(null, arguments));
};
exports.union = union;
exports.flatten = function flatten(array){
var flat = [];
for (var i = 0, l = array.length; i < l; i++) {
flat = flat.concat(Array.isArray(array[i]) ? flatten(array[i]) : array[i]);
}
return flat;
};
function fromIterator(iterator) {
let array = [];
if (iterator.__iterator__) {
for (let item of iterator)
array.push(item);
}
else {
for (let item of iterator)
array.push(item);
}
return array;
}
exports.fromIterator = fromIterator;
function find(array, predicate, fallback) {
var index = 0;
var count = array.length;
while (index < count) {
var value = array[index];
if (predicate(value)) return value;
else index = index + 1;
}
return fallback;
}
exports.find = find;