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Cleanup type coercions.

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John-David Dalton
2014-03-12 00:29:31 -07:00
parent 2970f66218
commit 029aac8059
1 changed files with 16 additions and 15 deletions
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31
lodash.js
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@@ -1327,7 +1327,7 @@
iterable = collection,
length = collection ? collection.length : 0;
if (typeof length == 'number') {
if (typeof length == 'number' && length > -1) {
length |= 0;
if (support.unindexedChars && isString(iterable)) {
iterable = iterable.split('');
@@ -1356,7 +1356,7 @@
var iterable = collection,
length = collection ? collection.length : 0;
if (typeof length == 'number') {
if (typeof length == 'number' && length > -1) {
length = (length |= 0) < 0 ? 0 : length;
if (support.unindexedChars && isString(iterable)) {
iterable = iterable.split('');
@@ -2855,11 +2855,13 @@
*/
function range(start, end, step) {
start = +start || 0;
step = typeof step == 'number' ? step : (+step || 1);
step = step == null ? 1 : (+step || 0);
if (end == null) {
end = start;
start = 0;
} else {
end = +end || 0;
}
// use `Array(length)` so engines like Chakra and V8 avoid slower modes
// http://youtu.be/XAqIpGU8ZZk#t=17m25s
@@ -3602,20 +3604,19 @@
*/
function contains(collection, target, fromIndex) {
var length = collection ? collection.length : 0;
fromIndex = typeof fromIndex == 'number' ? fromIndex | 0 : 0;
fromIndex = (typeof fromIndex == 'number' && fromIndex) | 0;
if (typeof length == 'number') {
length = (length |= 0) < 0 ? 0 : length;
if (fromIndex >= length) {
return false;
}
if (typeof length == 'number' && length > -1) {
if (typeof collection == 'string' || !isArray(collection) && isString(collection)) {
if (fromIndex >= length) {
return false;
}
return nativeContains
? nativeContains.call(collection, target, fromIndex)
: collection.indexOf(target, fromIndex) > -1;
}
var indexOf = getIndexOf();
fromIndex = fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex;
fromIndex = fromIndex < 0 ? nativeMax(0, (length | 0) + fromIndex) : fromIndex;
return indexOf(collection, target, fromIndex) > -1;
}
var index = -1,
@@ -4079,7 +4080,7 @@
var args = slice(arguments, 2),
index = -1,
isFunc = typeof methodName == 'function',
length = collection ? collection.length | 0 : 0,
length = (collection && collection.length) | 0,
result = Array(length < 0 ? 0 : length);
baseEach(collection, function(value) {
@@ -4129,7 +4130,7 @@
*/
function map(collection, callback, thisArg) {
var index = -1,
length = collection ? collection.length | 0 : 0,
length = (collection && collection.length) | 0,
result = Array(length < 0 ? 0 : length);
callback = lodash.createCallback(callback, thisArg, 3);
@@ -4518,7 +4519,7 @@
collection = collection.split('');
}
if (n == null || guard) {
var length = collection ? collection.length | 0 : 0;
var length = collection && collection.length | 0;
return length > 0 ? collection[baseRandom(0, length - 1)] : undefined;
}
var result = shuffle(collection);
@@ -4543,7 +4544,7 @@
*/
function shuffle(collection) {
var index = -1,
length = collection ? collection.length | 0 : 0,
length = (collection && collection.length) | 0,
result = Array(length < 0 ? 0 : length);
baseEach(collection, function(value) {
@@ -4694,8 +4695,8 @@
*/
function sortBy(collection, callback, thisArg) {
var index = -1,
length = (collection && collection.length) | 0,
multi = callback && isArray(callback),
length = collection ? collection.length | 0 : 0,
result = Array(length < 0 ? 0 : length);
if (!multi) {