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Comparing version 1.6.0 to 1.7.0

38

package.json
{
"name" : "underscore",
"description" : "JavaScript's functional programming helper library.",
"homepage" : "http://underscorejs.org",
"keywords" : ["util", "functional", "server", "client", "browser"],
"author" : "Jeremy Ashkenas <jeremy@documentcloud.org>",
"repository" : {"type": "git", "url": "git://github.com/jashkenas/underscore.git"},
"main" : "underscore.js",
"version" : "1.6.0",
"name": "underscore",
"description": "JavaScript's functional programming helper library.",
"homepage": "http://underscorejs.org",
"keywords": [
"util",
"functional",
"server",
"client",
"browser"
],
"author": "Jeremy Ashkenas <jeremy@documentcloud.org>",
"repository": {
"type": "git",
"url": "git://github.com/jashkenas/underscore.git"
},
"main": "underscore.js",
"version": "1.7.0",
"devDependencies": {
"docco": "0.6.x",
"phantomjs": "1.9.0-1",
"uglify-js": "2.4.x"
"phantomjs": "1.9.7-1",
"uglify-js": "2.4.x",
"eslint": "0.6.x"
},
"scripts": {
"test": "phantomjs test/vendor/runner.js test/index.html?noglobals=true",
"test": "phantomjs test/vendor/runner.js test/index.html?noglobals=true && eslint underscore.js test/*.js test/vendor/runner.js",
"build": "uglifyjs underscore.js -c \"evaluate=false\" --comments \"/ .*/\" -m --source-map underscore-min.map -o underscore-min.js",

@@ -26,3 +36,7 @@ "doc": "docco underscore.js"

],
"files" : ["underscore.js", "underscore-min.js", "LICENSE"]
"files": [
"underscore.js",
"underscore-min.js",
"LICENSE"
]
}

4

underscore-min.js

@@ -1,6 +0,6 @@

// Underscore.js 1.6.0
// Underscore.js 1.7.0
// http://underscorejs.org
// (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
// Underscore may be freely distributed under the MIT license.
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//# sourceMappingURL=underscore-min.map

920

underscore.js

@@ -1,2 +0,2 @@

// Underscore.js 1.6.0
// Underscore.js 1.7.0
// http://underscorejs.org

@@ -17,5 +17,2 @@ // (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors

// Establish the object that gets returned to break out of a loop iteration.
var breaker = {};
// Save bytes in the minified (but not gzipped) version:

@@ -35,11 +32,2 @@ var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;

var
nativeForEach = ArrayProto.forEach,
nativeMap = ArrayProto.map,
nativeReduce = ArrayProto.reduce,
nativeReduceRight = ArrayProto.reduceRight,
nativeFilter = ArrayProto.filter,
nativeEvery = ArrayProto.every,
nativeSome = ArrayProto.some,
nativeIndexOf = ArrayProto.indexOf,
nativeLastIndexOf = ArrayProto.lastIndexOf,
nativeIsArray = Array.isArray,

@@ -58,4 +46,3 @@ nativeKeys = Object.keys,

// backwards-compatibility for the old `require()` API. If we're in
// the browser, add `_` as a global object via a string identifier,
// for Closure Compiler "advanced" mode.
// the browser, add `_` as a global object.
if (typeof exports !== 'undefined') {

@@ -71,4 +58,38 @@ if (typeof module !== 'undefined' && module.exports) {

// Current version.
_.VERSION = '1.6.0';
_.VERSION = '1.7.0';
// Internal function that returns an efficient (for current engines) version
// of the passed-in callback, to be repeatedly applied in other Underscore
// functions.
var createCallback = function(func, context, argCount) {
if (context === void 0) return func;
switch (argCount == null ? 3 : argCount) {
case 1: return function(value) {
return func.call(context, value);
};
case 2: return function(value, other) {
return func.call(context, value, other);
};
case 3: return function(value, index, collection) {
return func.call(context, value, index, collection);
};
case 4: return function(accumulator, value, index, collection) {
return func.call(context, accumulator, value, index, collection);
};
}
return function() {
return func.apply(context, arguments);
};
};
// A mostly-internal function to generate callbacks that can be applied
// to each element in a collection, returning the desired result — either
// identity, an arbitrary callback, a property matcher, or a property accessor.
_.iteratee = function(value, context, argCount) {
if (value == null) return _.identity;
if (_.isFunction(value)) return createCallback(value, context, argCount);
if (_.isObject(value)) return _.matches(value);
return _.property(value);
};
// Collection Functions

@@ -78,16 +99,16 @@ // --------------------

// The cornerstone, an `each` implementation, aka `forEach`.
// Handles objects with the built-in `forEach`, arrays, and raw objects.
// Delegates to **ECMAScript 5**'s native `forEach` if available.
var each = _.each = _.forEach = function(obj, iterator, context) {
// Handles raw objects in addition to array-likes. Treats all
// sparse array-likes as if they were dense.
_.each = _.forEach = function(obj, iteratee, context) {
if (obj == null) return obj;
if (nativeForEach && obj.forEach === nativeForEach) {
obj.forEach(iterator, context);
} else if (obj.length === +obj.length) {
for (var i = 0, length = obj.length; i < length; i++) {
if (iterator.call(context, obj[i], i, obj) === breaker) return;
iteratee = createCallback(iteratee, context);
var i, length = obj.length;
if (length === +length) {
for (i = 0; i < length; i++) {
iteratee(obj[i], i, obj);
}
} else {
var keys = _.keys(obj);
for (var i = 0, length = keys.length; i < length; i++) {
if (iterator.call(context, obj[keys[i]], keys[i], obj) === breaker) return;
for (i = 0, length = keys.length; i < length; i++) {
iteratee(obj[keys[i]], keys[i], obj);
}

@@ -98,11 +119,14 @@ }

// Return the results of applying the iterator to each element.
// Delegates to **ECMAScript 5**'s native `map` if available.
_.map = _.collect = function(obj, iterator, context) {
var results = [];
if (obj == null) return results;
if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
each(obj, function(value, index, list) {
results.push(iterator.call(context, value, index, list));
});
// Return the results of applying the iteratee to each element.
_.map = _.collect = function(obj, iteratee, context) {
if (obj == null) return [];
iteratee = _.iteratee(iteratee, context);
var keys = obj.length !== +obj.length && _.keys(obj),
length = (keys || obj).length,
results = Array(length),
currentKey;
for (var index = 0; index < length; index++) {
currentKey = keys ? keys[index] : index;
results[index] = iteratee(obj[currentKey], currentKey, obj);
}
return results;

@@ -114,19 +138,17 @@ };

// **Reduce** builds up a single result from a list of values, aka `inject`,
// or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
_.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
var initial = arguments.length > 2;
// or `foldl`.
_.reduce = _.foldl = _.inject = function(obj, iteratee, memo, context) {
if (obj == null) obj = [];
if (nativeReduce && obj.reduce === nativeReduce) {
if (context) iterator = _.bind(iterator, context);
return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
iteratee = createCallback(iteratee, context, 4);
var keys = obj.length !== +obj.length && _.keys(obj),
length = (keys || obj).length,
index = 0, currentKey;
if (arguments.length < 3) {
if (!length) throw new TypeError(reduceError);
memo = obj[keys ? keys[index++] : index++];
}
each(obj, function(value, index, list) {
if (!initial) {
memo = value;
initial = true;
} else {
memo = iterator.call(context, memo, value, index, list);
}
});
if (!initial) throw new TypeError(reduceError);
for (; index < length; index++) {
currentKey = keys ? keys[index] : index;
memo = iteratee(memo, obj[currentKey], currentKey, obj);
}
return memo;

@@ -136,25 +158,16 @@ };

// The right-associative version of reduce, also known as `foldr`.
// Delegates to **ECMAScript 5**'s native `reduceRight` if available.
_.reduceRight = _.foldr = function(obj, iterator, memo, context) {
var initial = arguments.length > 2;
_.reduceRight = _.foldr = function(obj, iteratee, memo, context) {
if (obj == null) obj = [];
if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
if (context) iterator = _.bind(iterator, context);
return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
iteratee = createCallback(iteratee, context, 4);
var keys = obj.length !== + obj.length && _.keys(obj),
index = (keys || obj).length,
currentKey;
if (arguments.length < 3) {
if (!index) throw new TypeError(reduceError);
memo = obj[keys ? keys[--index] : --index];
}
var length = obj.length;
if (length !== +length) {
var keys = _.keys(obj);
length = keys.length;
while (index--) {
currentKey = keys ? keys[index] : index;
memo = iteratee(memo, obj[currentKey], currentKey, obj);
}
each(obj, function(value, index, list) {
index = keys ? keys[--length] : --length;
if (!initial) {
memo = obj[index];
initial = true;
} else {
memo = iterator.call(context, memo, obj[index], index, list);
}
});
if (!initial) throw new TypeError(reduceError);
return memo;

@@ -166,4 +179,5 @@ };

var result;
any(obj, function(value, index, list) {
if (predicate.call(context, value, index, list)) {
predicate = _.iteratee(predicate, context);
_.some(obj, function(value, index, list) {
if (predicate(value, index, list)) {
result = value;

@@ -177,3 +191,2 @@ return true;

// Return all the elements that pass a truth test.
// Delegates to **ECMAScript 5**'s native `filter` if available.
// Aliased as `select`.

@@ -183,5 +196,5 @@ _.filter = _.select = function(obj, predicate, context) {

if (obj == null) return results;
if (nativeFilter && obj.filter === nativeFilter) return obj.filter(predicate, context);
each(obj, function(value, index, list) {
if (predicate.call(context, value, index, list)) results.push(value);
predicate = _.iteratee(predicate, context);
_.each(obj, function(value, index, list) {
if (predicate(value, index, list)) results.push(value);
});

@@ -193,33 +206,33 @@ return results;

_.reject = function(obj, predicate, context) {
return _.filter(obj, function(value, index, list) {
return !predicate.call(context, value, index, list);
}, context);
return _.filter(obj, _.negate(_.iteratee(predicate)), context);
};
// Determine whether all of the elements match a truth test.
// Delegates to **ECMAScript 5**'s native `every` if available.
// Aliased as `all`.
_.every = _.all = function(obj, predicate, context) {
predicate || (predicate = _.identity);
var result = true;
if (obj == null) return result;
if (nativeEvery && obj.every === nativeEvery) return obj.every(predicate, context);
each(obj, function(value, index, list) {
if (!(result = result && predicate.call(context, value, index, list))) return breaker;
});
return !!result;
if (obj == null) return true;
predicate = _.iteratee(predicate, context);
var keys = obj.length !== +obj.length && _.keys(obj),
length = (keys || obj).length,
index, currentKey;
for (index = 0; index < length; index++) {
currentKey = keys ? keys[index] : index;
if (!predicate(obj[currentKey], currentKey, obj)) return false;
}
return true;
};
// Determine if at least one element in the object matches a truth test.
// Delegates to **ECMAScript 5**'s native `some` if available.
// Aliased as `any`.
var any = _.some = _.any = function(obj, predicate, context) {
predicate || (predicate = _.identity);
var result = false;
if (obj == null) return result;
if (nativeSome && obj.some === nativeSome) return obj.some(predicate, context);
each(obj, function(value, index, list) {
if (result || (result = predicate.call(context, value, index, list))) return breaker;
});
return !!result;
_.some = _.any = function(obj, predicate, context) {
if (obj == null) return false;
predicate = _.iteratee(predicate, context);
var keys = obj.length !== +obj.length && _.keys(obj),
length = (keys || obj).length,
index, currentKey;
for (index = 0; index < length; index++) {
currentKey = keys ? keys[index] : index;
if (predicate(obj[currentKey], currentKey, obj)) return true;
}
return false;
};

@@ -231,6 +244,4 @@

if (obj == null) return false;
if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
return any(obj, function(value) {
return value === target;
});
if (obj.length !== +obj.length) obj = _.values(obj);
return _.indexOf(obj, target) >= 0;
};

@@ -264,17 +275,24 @@

// Return the maximum element or (element-based computation).
// Can't optimize arrays of integers longer than 65,535 elements.
// See [WebKit Bug 80797](https://bugs.webkit.org/show_bug.cgi?id=80797)
_.max = function(obj, iterator, context) {
if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
return Math.max.apply(Math, obj);
// Return the maximum element (or element-based computation).
_.max = function(obj, iteratee, context) {
var result = -Infinity, lastComputed = -Infinity,
value, computed;
if (iteratee == null && obj != null) {
obj = obj.length === +obj.length ? obj : _.values(obj);
for (var i = 0, length = obj.length; i < length; i++) {
value = obj[i];
if (value > result) {
result = value;
}
}
} else {
iteratee = _.iteratee(iteratee, context);
_.each(obj, function(value, index, list) {
computed = iteratee(value, index, list);
if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
result = value;
lastComputed = computed;
}
});
}
var result = -Infinity, lastComputed = -Infinity;
each(obj, function(value, index, list) {
var computed = iterator ? iterator.call(context, value, index, list) : value;
if (computed > lastComputed) {
result = value;
lastComputed = computed;
}
});
return result;

@@ -284,28 +302,37 @@ };

// Return the minimum element (or element-based computation).
_.min = function(obj, iterator, context) {
if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
return Math.min.apply(Math, obj);
_.min = function(obj, iteratee, context) {
var result = Infinity, lastComputed = Infinity,
value, computed;
if (iteratee == null && obj != null) {
obj = obj.length === +obj.length ? obj : _.values(obj);
for (var i = 0, length = obj.length; i < length; i++) {
value = obj[i];
if (value < result) {
result = value;
}
}
} else {
iteratee = _.iteratee(iteratee, context);
_.each(obj, function(value, index, list) {
computed = iteratee(value, index, list);
if (computed < lastComputed || computed === Infinity && result === Infinity) {
result = value;
lastComputed = computed;
}
});
}
var result = Infinity, lastComputed = Infinity;
each(obj, function(value, index, list) {
var computed = iterator ? iterator.call(context, value, index, list) : value;
if (computed < lastComputed) {
result = value;
lastComputed = computed;
}
});
return result;
};
// Shuffle an array, using the modern version of the
// Shuffle a collection, using the modern version of the
// [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
_.shuffle = function(obj) {
var rand;
var index = 0;
var shuffled = [];
each(obj, function(value) {
rand = _.random(index++);
shuffled[index - 1] = shuffled[rand];
shuffled[rand] = value;
});
var set = obj && obj.length === +obj.length ? obj : _.values(obj);
var length = set.length;
var shuffled = Array(length);
for (var index = 0, rand; index < length; index++) {
rand = _.random(0, index);
if (rand !== index) shuffled[index] = shuffled[rand];
shuffled[rand] = set[index];
}
return shuffled;

@@ -325,12 +352,5 @@ };

// An internal function to generate lookup iterators.
var lookupIterator = function(value) {
if (value == null) return _.identity;
if (_.isFunction(value)) return value;
return _.property(value);
};
// Sort the object's values by a criterion produced by an iterator.
_.sortBy = function(obj, iterator, context) {
iterator = lookupIterator(iterator);
// Sort the object's values by a criterion produced by an iteratee.
_.sortBy = function(obj, iteratee, context) {
iteratee = _.iteratee(iteratee, context);
return _.pluck(_.map(obj, function(value, index, list) {

@@ -340,3 +360,3 @@ return {

index: index,
criteria: iterator.call(context, value, index, list)
criteria: iteratee(value, index, list)
};

@@ -356,8 +376,8 @@ }).sort(function(left, right) {

var group = function(behavior) {
return function(obj, iterator, context) {
return function(obj, iteratee, context) {
var result = {};
iterator = lookupIterator(iterator);
each(obj, function(value, index) {
var key = iterator.call(context, value, index, obj);
behavior(result, key, value);
iteratee = _.iteratee(iteratee, context);
_.each(obj, function(value, index) {
var key = iteratee(value, index, obj);
behavior(result, value, key);
});

@@ -370,4 +390,4 @@ return result;

// to group by, or a function that returns the criterion.
_.groupBy = group(function(result, key, value) {
_.has(result, key) ? result[key].push(value) : result[key] = [value];
_.groupBy = group(function(result, value, key) {
if (_.has(result, key)) result[key].push(value); else result[key] = [value];
});

@@ -377,3 +397,3 @@

// when you know that your index values will be unique.
_.indexBy = group(function(result, key, value) {
_.indexBy = group(function(result, value, key) {
result[key] = value;

@@ -385,4 +405,4 @@ });

// criterion.
_.countBy = group(function(result, key) {
_.has(result, key) ? result[key]++ : result[key] = 1;
_.countBy = group(function(result, value, key) {
if (_.has(result, key)) result[key]++; else result[key] = 1;
});

@@ -392,9 +412,9 @@

// an object should be inserted so as to maintain order. Uses binary search.
_.sortedIndex = function(array, obj, iterator, context) {
iterator = lookupIterator(iterator);
var value = iterator.call(context, obj);
_.sortedIndex = function(array, obj, iteratee, context) {
iteratee = _.iteratee(iteratee, context, 1);
var value = iteratee(obj);
var low = 0, high = array.length;
while (low < high) {
var mid = (low + high) >>> 1;
iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
var mid = low + high >>> 1;
if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
}

@@ -415,5 +435,16 @@ return low;

if (obj == null) return 0;
return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
return obj.length === +obj.length ? obj.length : _.keys(obj).length;
};
// Split a collection into two arrays: one whose elements all satisfy the given
// predicate, and one whose elements all do not satisfy the predicate.
_.partition = function(obj, predicate, context) {
predicate = _.iteratee(predicate, context);
var pass = [], fail = [];
_.each(obj, function(value, key, obj) {
(predicate(value, key, obj) ? pass : fail).push(value);
});
return [pass, fail];
};
// Array Functions

@@ -427,3 +458,3 @@ // ---------------

if (array == null) return void 0;
if ((n == null) || guard) return array[0];
if (n == null || guard) return array[0];
if (n < 0) return [];

@@ -438,3 +469,3 @@ return slice.call(array, 0, n);

_.initial = function(array, n, guard) {
return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
};

@@ -446,3 +477,3 @@

if (array == null) return void 0;
if ((n == null) || guard) return array[array.length - 1];
if (n == null || guard) return array[array.length - 1];
return slice.call(array, Math.max(array.length - n, 0));

@@ -456,3 +487,3 @@ };

_.rest = _.tail = _.drop = function(array, n, guard) {
return slice.call(array, (n == null) || guard ? 1 : n);
return slice.call(array, n == null || guard ? 1 : n);
};

@@ -466,13 +497,16 @@

// Internal implementation of a recursive `flatten` function.
var flatten = function(input, shallow, output) {
var flatten = function(input, shallow, strict, output) {
if (shallow && _.every(input, _.isArray)) {
return concat.apply(output, input);
}
each(input, function(value) {
if (_.isArray(value) || _.isArguments(value)) {
shallow ? push.apply(output, value) : flatten(value, shallow, output);
for (var i = 0, length = input.length; i < length; i++) {
var value = input[i];
if (!_.isArray(value) && !_.isArguments(value)) {
if (!strict) output.push(value);
} else if (shallow) {
push.apply(output, value);
} else {
output.push(value);
flatten(value, shallow, strict, output);
}
});
}
return output;

@@ -483,3 +517,3 @@ };

_.flatten = function(array, shallow) {
return flatten(array, shallow, []);
return flatten(array, shallow, false, []);
};

@@ -492,31 +526,31 @@

// Split an array into two arrays: one whose elements all satisfy the given
// predicate, and one whose elements all do not satisfy the predicate.
_.partition = function(array, predicate) {
var pass = [], fail = [];
each(array, function(elem) {
(predicate(elem) ? pass : fail).push(elem);
});
return [pass, fail];
};
// Produce a duplicate-free version of the array. If the array has already
// been sorted, you have the option of using a faster algorithm.
// Aliased as `unique`.
_.uniq = _.unique = function(array, isSorted, iterator, context) {
if (_.isFunction(isSorted)) {
context = iterator;
iterator = isSorted;
_.uniq = _.unique = function(array, isSorted, iteratee, context) {
if (array == null) return [];
if (!_.isBoolean(isSorted)) {
context = iteratee;
iteratee = isSorted;
isSorted = false;
}
var initial = iterator ? _.map(array, iterator, context) : array;
var results = [];
if (iteratee != null) iteratee = _.iteratee(iteratee, context);
var result = [];
var seen = [];
each(initial, function(value, index) {
if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) {
seen.push(value);
results.push(array[index]);
for (var i = 0, length = array.length; i < length; i++) {
var value = array[i];
if (isSorted) {
if (!i || seen !== value) result.push(value);
seen = value;
} else if (iteratee) {
var computed = iteratee(value, i, array);
if (_.indexOf(seen, computed) < 0) {
seen.push(computed);
result.push(value);
}
} else if (_.indexOf(result, value) < 0) {
result.push(value);
}
});
return results;
}
return result;
};

@@ -527,3 +561,3 @@

_.union = function() {
return _.uniq(_.flatten(arguments, true));
return _.uniq(flatten(arguments, true, true, []));
};

@@ -534,8 +568,14 @@

_.intersection = function(array) {
var rest = slice.call(arguments, 1);
return _.filter(_.uniq(array), function(item) {
return _.every(rest, function(other) {
return _.contains(other, item);
});
});
if (array == null) return [];
var result = [];
var argsLength = arguments.length;
for (var i = 0, length = array.length; i < length; i++) {
var item = array[i];
if (_.contains(result, item)) continue;
for (var j = 1; j < argsLength; j++) {
if (!_.contains(arguments[j], item)) break;
}
if (j === argsLength) result.push(item);
}
return result;
};

@@ -546,4 +586,6 @@

_.difference = function(array) {
var rest = concat.apply(ArrayProto, slice.call(arguments, 1));
return _.filter(array, function(value){ return !_.contains(rest, value); });
var rest = flatten(slice.call(arguments, 1), true, true, []);
return _.filter(array, function(value){
return !_.contains(rest, value);
});
};

@@ -553,7 +595,8 @@

// an index go together.
_.zip = function() {
var length = _.max(_.pluck(arguments, 'length').concat(0));
var results = new Array(length);
_.zip = function(array) {
if (array == null) return [];
var length = _.max(arguments, 'length').length;
var results = Array(length);
for (var i = 0; i < length; i++) {
results[i] = _.pluck(arguments, '' + i);
results[i] = _.pluck(arguments, i);
}

@@ -579,6 +622,4 @@ return results;

// If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
// we need this function. Return the position of the first occurrence of an
// item in an array, or -1 if the item is not included in the array.
// Delegates to **ECMAScript 5**'s native `indexOf` if available.
// Return the position of the first occurrence of an item in an array,
// or -1 if the item is not included in the array.
// If the array is large and already in sort order, pass `true`

@@ -591,3 +632,3 @@ // for **isSorted** to use binary search.

if (typeof isSorted == 'number') {
i = (isSorted < 0 ? Math.max(0, length + isSorted) : isSorted);
i = isSorted < 0 ? Math.max(0, length + isSorted) : isSorted;
} else {

@@ -598,3 +639,2 @@ i = _.sortedIndex(array, item);

}
if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
for (; i < length; i++) if (array[i] === item) return i;

@@ -604,11 +644,9 @@ return -1;

// Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
_.lastIndexOf = function(array, item, from) {
if (array == null) return -1;
var hasIndex = from != null;
if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
var idx = array.length;
if (typeof from == 'number') {
idx = from < 0 ? idx + from + 1 : Math.min(idx, from + 1);
}
var i = (hasIndex ? from : array.length);
while (i--) if (array[i] === item) return i;
while (--idx >= 0) if (array[idx] === item) return idx;
return -1;

@@ -625,11 +663,9 @@ };

}
step = arguments[2] || 1;
step = step || 1;
var length = Math.max(Math.ceil((stop - start) / step), 0);
var idx = 0;
var range = new Array(length);
var range = Array(length);
while(idx < length) {
range[idx++] = start;
start += step;
for (var idx = 0; idx < length; idx++, start += step) {
range[idx] = start;
}

@@ -644,3 +680,3 @@

// Reusable constructor function for prototype setting.
var ctor = function(){};
var Ctor = function(){};

@@ -653,13 +689,14 @@ // Create a function bound to a given object (assigning `this`, and arguments,

if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
if (!_.isFunction(func)) throw new TypeError;
if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');
args = slice.call(arguments, 2);
return bound = function() {
bound = function() {
if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
ctor.prototype = func.prototype;
var self = new ctor;
ctor.prototype = null;
Ctor.prototype = func.prototype;
var self = new Ctor;
Ctor.prototype = null;
var result = func.apply(self, args.concat(slice.call(arguments)));
if (Object(result) === result) return result;
if (_.isObject(result)) return result;
return self;
};
return bound;
};

@@ -687,5 +724,8 @@

_.bindAll = function(obj) {
var funcs = slice.call(arguments, 1);
if (funcs.length === 0) throw new Error('bindAll must be passed function names');
each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
var i, length = arguments.length, key;
if (length <= 1) throw new Error('bindAll must be passed function names');
for (i = 1; i < length; i++) {
key = arguments[i];
obj[key] = _.bind(obj[key], obj);
}
return obj;

@@ -696,8 +736,10 @@ };

_.memoize = function(func, hasher) {
var memo = {};
hasher || (hasher = _.identity);
return function() {
var key = hasher.apply(this, arguments);
return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
var memoize = function(key) {
var cache = memoize.cache;
var address = hasher ? hasher.apply(this, arguments) : key;
if (!_.has(cache, address)) cache[address] = func.apply(this, arguments);
return cache[address];
};
memoize.cache = {};
return memoize;
};

@@ -709,3 +751,5 @@

var args = slice.call(arguments, 2);
return setTimeout(function(){ return func.apply(null, args); }, wait);
return setTimeout(function(){
return func.apply(null, args);
}, wait);
};

@@ -728,3 +772,3 @@

var previous = 0;
options || (options = {});
if (!options) options = {};
var later = function() {

@@ -734,3 +778,3 @@ previous = options.leading === false ? 0 : _.now();

result = func.apply(context, args);
context = args = null;
if (!timeout) context = args = null;
};

@@ -743,3 +787,3 @@ return function() {

args = arguments;
if (remaining <= 0) {
if (remaining <= 0 || remaining > wait) {
clearTimeout(timeout);

@@ -749,3 +793,3 @@ timeout = null;

result = func.apply(context, args);
context = args = null;
if (!timeout) context = args = null;
} else if (!timeout && options.trailing !== false) {

@@ -767,3 +811,4 @@ timeout = setTimeout(later, remaining);

var last = _.now() - timestamp;
if (last < wait) {
if (last < wait && last > 0) {
timeout = setTimeout(later, wait - last);

@@ -774,3 +819,3 @@ } else {

result = func.apply(context, args);
context = args = null;
if (!timeout) context = args = null;
}

@@ -785,5 +830,3 @@ }

var callNow = immediate && !timeout;
if (!timeout) {
timeout = setTimeout(later, wait);
}
if (!timeout) timeout = setTimeout(later, wait);
if (callNow) {

@@ -798,15 +841,2 @@ result = func.apply(context, args);

// Returns a function that will be executed at most one time, no matter how
// often you call it. Useful for lazy initialization.
_.once = function(func) {
var ran = false, memo;
return function() {
if (ran) return memo;
ran = true;
memo = func.apply(this, arguments);
func = null;
return memo;
};
};
// Returns the first function passed as an argument to the second,

@@ -819,12 +849,19 @@ // allowing you to adjust arguments, run code before and after, and

// Returns a negated version of the passed-in predicate.
_.negate = function(predicate) {
return function() {
return !predicate.apply(this, arguments);
};
};
// Returns a function that is the composition of a list of functions, each
// consuming the return value of the function that follows.
_.compose = function() {
var funcs = arguments;
var args = arguments;
var start = args.length - 1;
return function() {
var args = arguments;
for (var i = funcs.length - 1; i >= 0; i--) {
args = [funcs[i].apply(this, args)];
}
return args[0];
var i = start;
var result = args[start].apply(this, arguments);
while (i--) result = args[i].call(this, result);
return result;
};

@@ -842,2 +879,19 @@ };

// Returns a function that will only be executed before being called N times.
_.before = function(times, func) {
var memo;
return function() {
if (--times > 0) {
memo = func.apply(this, arguments);
} else {
func = null;
}
return memo;
};
};
// Returns a function that will be executed at most one time, no matter how
// often you call it. Useful for lazy initialization.
_.once = _.partial(_.before, 2);
// Object Functions

@@ -860,3 +914,3 @@ // ----------------

var length = keys.length;
var values = new Array(length);
var values = Array(length);
for (var i = 0; i < length; i++) {

@@ -872,3 +926,3 @@ values[i] = obj[keys[i]];

var length = keys.length;
var pairs = new Array(length);
var pairs = Array(length);
for (var i = 0; i < length; i++) {

@@ -902,9 +956,12 @@ pairs[i] = [keys[i], obj[keys[i]]];

_.extend = function(obj) {
each(slice.call(arguments, 1), function(source) {
if (source) {
for (var prop in source) {
obj[prop] = source[prop];
if (!_.isObject(obj)) return obj;
var source, prop;
for (var i = 1, length = arguments.length; i < length; i++) {
source = arguments[i];
for (prop in source) {
if (hasOwnProperty.call(source, prop)) {
obj[prop] = source[prop];
}
}
});
}
return obj;

@@ -914,19 +971,33 @@ };

// Return a copy of the object only containing the whitelisted properties.
_.pick = function(obj) {
var copy = {};
var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
each(keys, function(key) {
if (key in obj) copy[key] = obj[key];
});
return copy;
_.pick = function(obj, iteratee, context) {
var result = {}, key;
if (obj == null) return result;
if (_.isFunction(iteratee)) {
iteratee = createCallback(iteratee, context);
for (key in obj) {
var value = obj[key];
if (iteratee(value, key, obj)) result[key] = value;
}
} else {
var keys = concat.apply([], slice.call(arguments, 1));
obj = new Object(obj);
for (var i = 0, length = keys.length; i < length; i++) {
key = keys[i];
if (key in obj) result[key] = obj[key];
}
}
return result;
};
// Return a copy of the object without the blacklisted properties.
_.omit = function(obj) {
var copy = {};
var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
for (var key in obj) {
if (!_.contains(keys, key)) copy[key] = obj[key];
_.omit = function(obj, iteratee, context) {
if (_.isFunction(iteratee)) {
iteratee = _.negate(iteratee);
} else {
var keys = _.map(concat.apply([], slice.call(arguments, 1)), String);
iteratee = function(value, key) {
return !_.contains(keys, key);
};
}
return copy;
return _.pick(obj, iteratee, context);
};

@@ -936,9 +1007,9 @@

_.defaults = function(obj) {
each(slice.call(arguments, 1), function(source) {
if (source) {
for (var prop in source) {
if (obj[prop] === void 0) obj[prop] = source[prop];
}
if (!_.isObject(obj)) return obj;
for (var i = 1, length = arguments.length; i < length; i++) {
var source = arguments[i];
for (var prop in source) {
if (obj[prop] === void 0) obj[prop] = source[prop];
}
});
}
return obj;

@@ -965,3 +1036,3 @@ };

// See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
if (a === b) return a !== 0 || 1 / a == 1 / b;
if (a === b) return a !== 0 || 1 / a === 1 / b;
// A strict comparison is necessary because `null == undefined`.

@@ -974,13 +1045,17 @@ if (a == null || b == null) return a === b;

var className = toString.call(a);
if (className != toString.call(b)) return false;
if (className !== toString.call(b)) return false;
switch (className) {
// Strings, numbers, dates, and booleans are compared by value.
// Strings, numbers, regular expressions, dates, and booleans are compared by value.
case '[object RegExp]':
// RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
case '[object String]':
// Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
// equivalent to `new String("5")`.
return a == String(b);
return '' + a === '' + b;
case '[object Number]':
// `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
// other numeric values.
return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
// `NaN`s are equivalent, but non-reflexive.
// Object(NaN) is equivalent to NaN
if (+a !== +a) return +b !== +b;
// An `egal` comparison is performed for other numeric values.
return +a === 0 ? 1 / +a === 1 / b : +a === +b;
case '[object Date]':

@@ -991,9 +1066,3 @@ case '[object Boolean]':

// of `NaN` are not equivalent.
return +a == +b;
// RegExps are compared by their source patterns and flags.
case '[object RegExp]':
return a.source == b.source &&
a.global == b.global &&
a.multiline == b.multiline &&
a.ignoreCase == b.ignoreCase;
return +a === +b;
}

@@ -1007,3 +1076,3 @@ if (typeof a != 'object' || typeof b != 'object') return false;

// unique nested structures.
if (aStack[length] == a) return bStack[length] == b;
if (aStack[length] === a) return bStack[length] === b;
}

@@ -1013,5 +1082,9 @@ // Objects with different constructors are not equivalent, but `Object`s

var aCtor = a.constructor, bCtor = b.constructor;
if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
_.isFunction(bCtor) && (bCtor instanceof bCtor))
&& ('constructor' in a && 'constructor' in b)) {
if (
aCtor !== bCtor &&
// Handle Object.create(x) cases
'constructor' in a && 'constructor' in b &&
!(_.isFunction(aCtor) && aCtor instanceof aCtor &&
_.isFunction(bCtor) && bCtor instanceof bCtor)
) {
return false;

@@ -1022,8 +1095,8 @@ }

bStack.push(b);
var size = 0, result = true;
var size, result;
// Recursively compare objects and arrays.
if (className == '[object Array]') {
if (className === '[object Array]') {
// Compare array lengths to determine if a deep comparison is necessary.
size = a.length;
result = size == b.length;
result = size === b.length;
if (result) {

@@ -1037,17 +1110,13 @@ // Deep compare the contents, ignoring non-numeric properties.

// Deep compare objects.
for (var key in a) {
if (_.has(a, key)) {
// Count the expected number of properties.
size++;
// Deep compare each member.
var keys = _.keys(a), key;
size = keys.length;
// Ensure that both objects contain the same number of properties before comparing deep equality.
result = _.keys(b).length === size;
if (result) {
while (size--) {
// Deep compare each member
key = keys[size];
if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
}
}
// Ensure that both objects contain the same number of properties.
if (result) {
for (key in b) {
if (_.has(b, key) && !(size--)) break;
}
result = !size;
}
}

@@ -1069,3 +1138,3 @@ // Remove the first object from the stack of traversed objects.

if (obj == null) return true;
if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
if (_.isArray(obj) || _.isString(obj) || _.isArguments(obj)) return obj.length === 0;
for (var key in obj) if (_.has(obj, key)) return false;

@@ -1083,3 +1152,3 @@ return true;

_.isArray = nativeIsArray || function(obj) {
return toString.call(obj) == '[object Array]';
return toString.call(obj) === '[object Array]';
};

@@ -1089,9 +1158,10 @@

_.isObject = function(obj) {
return obj === Object(obj);
var type = typeof obj;
return type === 'function' || type === 'object' && !!obj;
};
// Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
_.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
_['is' + name] = function(obj) {
return toString.call(obj) == '[object ' + name + ']';
return toString.call(obj) === '[object ' + name + ']';
};

@@ -1104,10 +1174,10 @@ });

_.isArguments = function(obj) {
return !!(obj && _.has(obj, 'callee'));
return _.has(obj, 'callee');
};
}
// Optimize `isFunction` if appropriate.
if (typeof (/./) !== 'function') {
// Optimize `isFunction` if appropriate. Work around an IE 11 bug.
if (typeof /./ !== 'function') {
_.isFunction = function(obj) {
return typeof obj === 'function';
return typeof obj == 'function' || false;
};

@@ -1123,3 +1193,3 @@ }

_.isNaN = function(obj) {
return _.isNumber(obj) && obj != +obj;
return _.isNumber(obj) && obj !== +obj;
};

@@ -1129,3 +1199,3 @@

_.isBoolean = function(obj) {
return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
};

@@ -1146,3 +1216,3 @@

_.has = function(obj, key) {
return hasOwnProperty.call(obj, key);
return obj != null && hasOwnProperty.call(obj, key);
};

@@ -1160,3 +1230,3 @@

// Keep the identity function around for default iterators.
// Keep the identity function around for default iteratees.
_.identity = function(value) {

@@ -1167,3 +1237,3 @@ return value;

_.constant = function(value) {
return function () {
return function() {
return value;

@@ -1173,2 +1243,4 @@ };

_.noop = function(){};
_.property = function(key) {

@@ -1182,16 +1254,19 @@ return function(obj) {

_.matches = function(attrs) {
var pairs = _.pairs(attrs), length = pairs.length;
return function(obj) {
if (obj === attrs) return true; //avoid comparing an object to itself.
for (var key in attrs) {
if (attrs[key] !== obj[key])
return false;
if (obj == null) return !length;
obj = new Object(obj);
for (var i = 0; i < length; i++) {
var pair = pairs[i], key = pair[0];
if (pair[1] !== obj[key] || !(key in obj)) return false;
}
return true;
}
};
};
// Run a function **n** times.
_.times = function(n, iterator, context) {
_.times = function(n, iteratee, context) {
var accum = Array(Math.max(0, n));
for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
iteratee = createCallback(iteratee, context, 1);
for (var i = 0; i < n; i++) accum[i] = iteratee(i);
return accum;

@@ -1210,31 +1285,33 @@ };

// A (possibly faster) way to get the current timestamp as an integer.
_.now = Date.now || function() { return new Date().getTime(); };
// List of HTML entities for escaping.
var entityMap = {
escape: {
'&': '&amp;',
'<': '&lt;',
'>': '&gt;',
'"': '&quot;',
"'": '&#x27;'
}
_.now = Date.now || function() {
return new Date().getTime();
};
entityMap.unescape = _.invert(entityMap.escape);
// Regexes containing the keys and values listed immediately above.
var entityRegexes = {
escape: new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
// List of HTML entities for escaping.
var escapeMap = {
'&': '&amp;',
'<': '&lt;',
'>': '&gt;',
'"': '&quot;',
"'": '&#x27;',
'`': '&#x60;'
};
var unescapeMap = _.invert(escapeMap);
// Functions for escaping and unescaping strings to/from HTML interpolation.
_.each(['escape', 'unescape'], function(method) {
_[method] = function(string) {
if (string == null) return '';
return ('' + string).replace(entityRegexes[method], function(match) {
return entityMap[method][match];
});
var createEscaper = function(map) {
var escaper = function(match) {
return map[match];
};
});
// Regexes for identifying a key that needs to be escaped
var source = '(?:' + _.keys(map).join('|') + ')';
var testRegexp = RegExp(source);
var replaceRegexp = RegExp(source, 'g');
return function(string) {
string = string == null ? '' : '' + string;
return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
};
};
_.escape = createEscaper(escapeMap);
_.unescape = createEscaper(unescapeMap);

@@ -1246,17 +1323,5 @@ // If the value of the named `property` is a function then invoke it with the

var value = object[property];
return _.isFunction(value) ? value.call(object) : value;
return _.isFunction(value) ? object[property]() : value;
};
// Add your own custom functions to the Underscore object.
_.mixin = function(obj) {
each(_.functions(obj), function(name) {
var func = _[name] = obj[name];
_.prototype[name] = function() {
var args = [this._wrapped];
push.apply(args, arguments);
return result.call(this, func.apply(_, args));
};
});
};
// Generate a unique integer id (unique within the entire client session).

@@ -1290,3 +1355,2 @@ // Useful for temporary DOM ids.

'\n': 'n',
'\t': 't',
'\u2028': 'u2028',

@@ -1296,13 +1360,18 @@ '\u2029': 'u2029'

var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
var escaper = /\\|'|\r|\n|\u2028|\u2029/g;
var escapeChar = function(match) {
return '\\' + escapes[match];
};
// JavaScript micro-templating, similar to John Resig's implementation.
// Underscore templating handles arbitrary delimiters, preserves whitespace,
// and correctly escapes quotes within interpolated code.
_.template = function(text, data, settings) {
var render;
// NB: `oldSettings` only exists for backwards compatibility.
_.template = function(text, settings, oldSettings) {
if (!settings && oldSettings) settings = oldSettings;
settings = _.defaults({}, settings, _.templateSettings);
// Combine delimiters into one regular expression via alternation.
var matcher = new RegExp([
var matcher = RegExp([
(settings.escape || noMatch).source,

@@ -1317,15 +1386,14 @@ (settings.interpolate || noMatch).source,

text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
source += text.slice(index, offset)
.replace(escaper, function(match) { return '\\' + escapes[match]; });
source += text.slice(index, offset).replace(escaper, escapeChar);
index = offset + match.length;
if (escape) {
source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
}
if (interpolate) {
} else if (interpolate) {
source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
}
if (evaluate) {
} else if (evaluate) {
source += "';\n" + evaluate + "\n__p+='";
}
index = offset + match.length;
// Adobe VMs need the match returned to produce the correct offest.
return match;

@@ -1340,6 +1408,6 @@ });

"print=function(){__p+=__j.call(arguments,'');};\n" +
source + "return __p;\n";
source + 'return __p;\n';
try {
render = new Function(settings.variable || 'obj', '_', source);
var render = new Function(settings.variable || 'obj', '_', source);
} catch (e) {

@@ -1350,3 +1418,2 @@ e.source = source;

if (data) return render(data, _);
var template = function(data) {

@@ -1356,4 +1423,5 @@ return render.call(this, data, _);

// Provide the compiled function source as a convenience for precompilation.
template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';
// Provide the compiled source as a convenience for precompilation.
var argument = settings.variable || 'obj';
template.source = 'function(' + argument + '){\n' + source + '}';

@@ -1363,5 +1431,7 @@ return template;

// Add a "chain" function, which will delegate to the wrapper.
// Add a "chain" function. Start chaining a wrapped Underscore object.
_.chain = function(obj) {
return _(obj).chain();
var instance = _(obj);
instance._chain = true;
return instance;
};

@@ -1380,2 +1450,14 @@

// Add your own custom functions to the Underscore object.
_.mixin = function(obj) {
_.each(_.functions(obj), function(name) {
var func = _[name] = obj[name];
_.prototype[name] = function() {
var args = [this._wrapped];
push.apply(args, arguments);
return result.call(this, func.apply(_, args));
};
});
};
// Add all of the Underscore functions to the wrapper object.

@@ -1385,3 +1467,3 @@ _.mixin(_);

// Add all mutator Array functions to the wrapper.
each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
_.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
var method = ArrayProto[name];

@@ -1391,3 +1473,3 @@ _.prototype[name] = function() {

method.apply(obj, arguments);
if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0];
return result.call(this, obj);

@@ -1398,3 +1480,3 @@ };

// Add all accessor Array functions to the wrapper.
each(['concat', 'join', 'slice'], function(name) {
_.each(['concat', 'join', 'slice'], function(name) {
var method = ArrayProto[name];

@@ -1406,17 +1488,7 @@ _.prototype[name] = function() {

_.extend(_.prototype, {
// Extracts the result from a wrapped and chained object.
_.prototype.value = function() {
return this._wrapped;
};
// Start chaining a wrapped Underscore object.
chain: function() {
this._chain = true;
return this;
},
// Extracts the result from a wrapped and chained object.
value: function() {
return this._wrapped;
}
});
// AMD registration happens at the end for compatibility with AMD loaders

@@ -1434,2 +1506,2 @@ // that may not enforce next-turn semantics on modules. Even though general

}
}).call(this);
}.call(this));
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