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Remove nativeAssign and getOwnPropertySymbols use.

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jdalton
2015-05-08 11:21:11 -07:00
parent 569b4b29aa
commit 9efb73f592
3 changed files with 10 additions and 100 deletions
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53
lodash.src.js
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@@ -781,7 +781,6 @@
ceil = Math.ceil,
clearTimeout = context.clearTimeout,
floor = Math.floor,
getOwnPropertySymbols = isNative(getOwnPropertySymbols = Object.getOwnPropertySymbols) && getOwnPropertySymbols,
getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf,
push = arrayProto.push,
preventExtensions = isNative(preventExtensions = Object.preventExtensions) && preventExtensions,
@@ -804,29 +803,6 @@
return result;
}());
/** Used as `baseAssign`. */
var nativeAssign = (function() {
// Avoid `Object.assign` in Firefox 34-37 which have an early implementation
// with a now defunct try/catch behavior. See https://bugzilla.mozilla.org/show_bug.cgi?id=1103344
// for more details.
//
// Use `Object.preventExtensions` on a plain object instead of simply using
// `Object('x')` because Chrome and IE fail to throw an error when attempting
// to assign values to readonly indexes of strings.
var func = preventExtensions && isNative(func = Object.assign) && func;
try {
if (func) {
var object = preventExtensions({ '1': 0 });
object[0] = 1;
}
} catch(e) {
// Only attempt in strict mode.
try { func(object, 'xo'); } catch(e) {}
return !object[1] && func;
}
return false;
}());
/* Native method references for those with the same name as other `lodash` methods. */
var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate,
nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray,
@@ -1781,10 +1757,8 @@
* @returns {Object} Returns `object`.
*/
function assignWith(object, source, customizer) {
var props = keys(source);
push.apply(props, getSymbols(source));
var index = -1,
props = keys(source),
length = props.length;
while (++index < length) {
@@ -1809,11 +1783,11 @@
* @param {Object} source The source object.
* @returns {Object} Returns `object`.
*/
var baseAssign = nativeAssign || function(object, source) {
function baseAssign(object, source) {
return source == null
? object
: baseCopy(source, getSymbols(source), baseCopy(source, keys(source), object));
};
: baseCopy(source, keys(source), object);
}
/**
* The base implementation of `_.at` without support for string collections
@@ -2603,11 +2577,9 @@
if (!isObject(object)) {
return object;
}
var isSrcArr = isArrayLike(source) && (isArray(source) || isTypedArray(source));
if (!isSrcArr) {
var props = keys(source);
push.apply(props, getSymbols(source));
}
var isSrcArr = isArrayLike(source) && (isArray(source) || isTypedArray(source)),
props = !isSrcArr && keys(source);
arrayEach(props || source, function(srcValue, key) {
if (props) {
key = srcValue;
@@ -4162,17 +4134,6 @@
*/
var getLength = baseProperty('length');
/**
* Creates an array of the own symbols of `object`.
*
* @private
* @param {Object} object The object to query.
* @returns {Array} Returns the array of symbols.
*/
var getSymbols = !getOwnPropertySymbols ? constant([]) : function(object) {
return getOwnPropertySymbols(toObject(object));
};
/**
* Gets the view, applying any `transforms` to the `start` and `end` positions.
*