Current File : //proc/985914/root/data/old/home/stash/stash/atlassian-stash/static/util/array.js
define('util/array', [
'underscore',
'util/function',
'exports'
], function (
_,
fn,
exports
) {
"use strict";
/**
* Find an index for the first item in the array where a given predicate returns truthy, or -1 if no item returns truthy
* @param {function(*, number, Array):boolean} fn - predicate
* @returns {function(Array):number} index where the predicate first returned truthy
*/
function findIndex(fn) {
return function(array) {
for (var i = 0; i < array.length; i++) {
if (fn(array[i], i, array)) {
return i;
}
}
return -1;
};
}
/**
* Slice an array starting at (inclusive) the point where a predicate first returns truthy
* @param {function(*, number, Array):boolean} fn - predicate
* @returns {function(Array) : Array}
*/
function skipUntil(fn) {
return function (array) {
var i = findIndex(fn)(array);
return i === -1 ? [] : array.slice(i);
};
}
/**
* Slice an array until (exclusive) the point where a predicate first returns truthy
* @param {function(*, number, Array):boolean} fn - predicate
* @returns {function(Array) : Array}
*/
function takeUntil(fn) {
return function (array) {
var i = findIndex(fn)(array);
return i === -1 ? array : array.slice(0, i);
};
}
exports.findIndex = findIndex;
exports.skipUntil = skipUntil;
/**
* Slice an array starting at (inclusive) the point where a predicate first returns falsy
* @function
* @param {function(*, number, Array):boolean} fn - predicate
* @returns {function(Array) : Array}
*/
exports.skipWhile = _.compose(skipUntil, fn.not);
exports.takeUntil = takeUntil;
/**
* Slice an array until (exclusive) the point where a predicate first returns falsy
* @param {function(*, number, Array):boolean} fn - predicate
* @returns {function(Array) : Array}
*/
exports.takeWhile = _.compose(takeUntil, fn.not);
});
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