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Make lodash underscore build smaller and rebuild docs.

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Former-commit-id: 19405bc4e490588d7a55379974d2d7d81d1cf5f7
This commit is contained in:
John-David Dalton
2012-09-15 16:38:48 -07:00
parent 16f89b40c3
commit de1e889f1d
3 changed files with 97 additions and 64 deletions
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46
build.js
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@@ -592,14 +592,17 @@
* @returns {String} Returns the source with the variable removed.
*/
function removeVar(source, varName) {
// simplify `arrayLikeClasses` and `cloneableClasses`
if (/^(?:arrayLike|cloneable)Classes$/.test(varName)) {
source = source.replace(RegExp('(var ' + varName + ' *=)[\\s\\S]+?(true;\\n)'), '$1$2');
}
source = source.replace(RegExp(
// begin non-capturing group
'(?:' +
// match multi-line comment block
'(?:\\n +/\\*[^*]*\\*+(?:[^/][^*]*\\*+)*/)?\\n' +
// match a variable declaration that's not part of a declaration list
'( +)var ' + varName + ' *= *(?:.+?;|(?:Function\\(.+?|.*?[^,])\\n[\\s\\S]+?\\n\\1.+?;)\\n|' +
//'( +)var ' + varName + ' *= *(?:.+?;|(?:Function\\(.+?|.*?[^,])[\\s\\S]+?\\n\\1.+?;)\\n|' +
'( +)var ' + varName + ' *= *(?:.+?(?:;|&&\\n[^;]+;)|(?:\\w+\\(|{)[\\s\\S]+?\\n\\1.+?;)\\n|' +
// match a variable in a declaration list
'\\n +' + varName + ' *=.+?,' +
// end non-capturing group
@@ -729,6 +732,9 @@
/*------------------------------------------------------------------------*/
// backup `dependencyMap` to restore later
var dependencyBackup = _.clone(dependencyMap, true);
// collections of method names to exclude or include
var excludeMethods = [],
includeMethods = [];
@@ -824,11 +830,33 @@
source = removeKeysOptimization(source);
}
else if (isUnderscore) {
// update dependencies
dependencyMap.clone = ['extend', 'isArray'];
dependencyMap.isEqual = ['isArray', 'isFunction'];
dependencyMap.isEmpty = ['isArray'];
// remove unneeded variables
source = removeVar(source, 'arrayLikeClasses');
source = removeVar(source, 'cloneableClasses');
// remove unused features from `createBound`
source = source.replace(matchFunction(source, 'createBound'), function(match) {
return match
.replace(/(function createBound\([^{]+{)[\s\S]+?(\n *function bound)/, '$1$2')
.replace(/thisBinding *=[^}]+}/, 'thisBinding = thisArg;\n');
});
// replace `arrayLikeClasses` in `_.isEmpty`
source = source.replace(/'if *\(arrayLikeClasses[\s\S]+?' \|\|\\n/, "'if (isArray(value) ||");
// replace `arrayLikeClasses` in `_.isEqual`
source = source.replace(/(?: *\/\/.*\n)*( +)var isArr *= *arrayLikeClasses[^}]+}/, '$1var isArr = isArray(a);');
// remove `deep` clone functionality
source = source.replace(/( +)function clone[\s\S]+?\n\1}/, [
' function clone(value) {',
' return value && objectTypes[typeof value]',
' ? (toString.call(value) == arrayClass ? slice.call(value) : extend({}, value))',
' ? (isArray(value) ? slice.call(value) : extend({}, value))',
' : value',
' }'
].join('\n'));
@@ -842,7 +870,7 @@
// remove `prototype` [[Enumerable]] fix from `iteratorTemplate`
source = source
.replace(/(?: *\/\/.*\n)*\s*' *(?:<% *)?if *\(!hasDontEnumBug *(?:&&|\))[\s\S]+?<% *} *(?:%>|').+/g, '')
.replace(/(?: *\/\/.*\n)* *' *(?:<% *)?if *\(!hasDontEnumBug *(?:&&|\))[\s\S]+?<% *} *(?:%>|').+/g, '')
.replace(/!hasDontEnumBug *\|\|/g, '');
}
vm.runInContext(source, context);
@@ -1188,8 +1216,7 @@
source = source.replace(/(?: *\/\/.*\n)* *(?:else )?if *\(freeExports\) *{\s*}(?:\s*else *{\n([\s\S]+?) *})?/, '$1');
if ((source.match(/\bfreeExports\b/g) || []).length < 2) {
//source = removeVar(source, 'freeExports');
source = source.replace(/var freeExports *=[\s\S]+?;\n/, '')
source = removeVar(source, 'freeExports');
}
/*------------------------------------------------------------------------*/
@@ -1236,7 +1263,7 @@
// remove associated functions, variables, and code snippets that the minifier may miss
if (isRemoved(source, 'clone')) {
source = source.replace(/(?:\n +\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)?\n *var cloneableClasses *=[\s\S]+?true;\n/g, '');
source = removeVar(source, 'cloneableClasses');
}
if (isRemoved(source, 'isArray')) {
source = removeVar(source, 'nativeIsArray');
@@ -1276,7 +1303,7 @@
source = removeVar(source, 'reNative');
}
if (isRemoved(source, 'createIterator', 'isEmpty', 'isEqual')) {
source = source.replace(/(?:\n +\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)?\n *var arrayLikeClasses *=[\s\S]+?true;\n/g, '');
source = removeVar(source, 'arrayLikeClasses');
}
if (isRemoved(source, 'createIterator', 'isEqual')) {
source = source.replace(/(?:\n +\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)?\n *var hasDontEnumBug;|.+?hasDontEnumBug *=.+/g, '');
@@ -1308,6 +1335,9 @@
// used to name temporary files created in `dist/`
var workingName = 'lodash' + (isCustom ? '.custom' : '') + '.min';
// restore `dependencyMap`
dependencyMap = dependencyBackup;
// output debug build
if (isCustom && !outputPath && !isStdOut) {
callback(debugSource, path.join(cwd, 'lodash.custom.js'));