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Add hasObjectSpliceBug to avoid unnecessary use of the delete operator from the mutator Array function mixin.

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Former-commit-id: 8e92914f451454323a1ff6ef8ec1886b41e54ced
This commit is contained in:
John-David Dalton
2012-08-26 12:54:03 -07:00
parent 6465f8d8e6
commit ce440e9f43
4 changed files with 226 additions and 168 deletions
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14
build.js
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@@ -977,7 +977,7 @@
return match.replace(/\bcallee\b/g, 'merge');
});
// remove `hasDontEnumBug`, `iteratesOwnLast`, `noArgsEnum` assignment
// remove `hasDontEnumBug`, `hasObjectSpliceBug`, `iteratesOwnLast`, `noArgsEnum` assignment
source = source.replace(/(?:\n +\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)?\n *var hasDontEnumBug\b[\s\S]+?}\(1\)\);\n/, '');
// remove `iteratesOwnLast` from `isPlainObject`
@@ -986,8 +986,8 @@
// remove JScript [[DontEnum]] fix from `_.isEqual`
source = source.replace(/(?:\s*\/\/.*)*\n( +)if *\(hasDontEnumBug[\s\S]+?\n\1}/, '');
// remove IE `shift` and `splice` fix from mutator Array functions mixin
source = source.replace(/(?:\s*\/\/.*)*\n( +)if *\(value.length *=== *0[\s\S]+?\n\1}/, '');
// remove `hasObjectSpliceBug` fix from the mutator Array functions mixin
source = source.replace(/(?:\s*\/\/.*)*\n( +)if *\(hasObjectSpliceBug[\s\S]+?\n\1}/, '');
// remove `noArraySliceOnStrings` from `_.toArray`
source = source.replace(/noArraySliceOnStrings *\?[^:]+: *([^)]+)/g, '$1');
@@ -1056,6 +1056,8 @@
source = source.replace(/(?:new +LoDash(?!\()|(?:new +)?LoDash\([^)]*\));?/g, '');
// remove `LoDash.prototype` additions
source = source.replace(/(?:\s*\/\/.*)*\s*LoDash.prototype *=[\s\S]+?\/\*-+\*\//, '');
// remove `hasObjectSpliceBug` assignment
source = source.replace(/(?:\n +\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)?\n *var hasObjectSpliceBug;|.+?hasObjectSpliceBug *=.+/g, '');
}
// assign debug source before further modifications that rely on the minifier
@@ -1106,9 +1108,9 @@
if (isRemoved(source, 'createIterator', 'keys')) {
source = removeVar(source, 'nativeKeys');
}
if (!source.match(/var (?:hasDontEnumBug|iteratesOwnLast|noArgsEnum)\b/g)) {
// remove `hasDontEnumBug`, `iteratesOwnLast`, `noArgsEnum` assignment
source = source.replace(/ *\(function\(\) *{\s*var props\b[\s\S]+?}\(1\)\);/, '');
if (!source.match(/var (?:hasDontEnumBug|hasObjectSpliceBug|iteratesOwnLast|noArgsEnum)\b/g)) {
// remove `hasDontEnumBug`, `hasObjectSpliceBug`, `iteratesOwnLast`, and `noArgsEnum` assignment
source = source.replace(/ *\(function\(\) *{[\s\S]+?}\(1\)\);/, '');
}
// remove pseudo private properties