mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-01 15:57:48 +00:00
Optimize inlining the iteratorTemplate for builds.
Former-commit-id: 8b7ac4622e51dbe5c0364f3c6781aa474dcfa96e
This commit is contained in:
John-David Dalton
86
build.js
86
build.js
@@ -185,6 +185,28 @@
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'zipObject': []
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};
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/** Used to `iteratorTemplate` */
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var iteratorOptions = [
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'args',
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'array',
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'arrayBranch',
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'beforeLoop',
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'bottom',
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'exit',
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'firstArg',
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'hasExp',
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'hasDontEnumBug',
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'inLoop',
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'init',
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'iteratedObject',
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'loopExp',
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'object',
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'objectBranch',
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'shadowed',
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'top',
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'useHas'
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];
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/** Collections of method names */
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var excludeMethods,
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includeMethods,
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@@ -271,6 +293,23 @@
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}, []));
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}
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/**
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* Gets the formatted source of the given function.
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*
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* @private
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* @param {Function} func The function to process.
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* @returns {String} Returns the formatted source.
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*/
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function getFunctionSource(func) {
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var source = (func + '');
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return source.replace(/\n(?:.*)/g, function(match, index) {
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match = match.slice(1);
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return (
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match == '}' && source.indexOf('}', index + 2) == -1 ? '\n ' : '\n '
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) + match;
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});
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}
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/**
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* Gets the `_.isArguments` fallback snippet from `source`.
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*
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@@ -662,13 +701,8 @@
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if (!reFunc.test(source)) {
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return;
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}
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// extract and format the function's code
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var code = (lodash[funcName] + '').replace(/\n(?:.*)/g, function(match) {
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match = match.slice(1);
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return (match == '}' ? '\n ' : '\n ') + match;
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});
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source = source.replace(reFunc, '$1' + code + ';\n');
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// extract, format, and inject the compiled function's source code
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source = source.replace(reFunc, '$1' + getFunctionSource(lodash[funcName]) + ';\n');
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});
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source = removeIsArgumentsFallback(source);
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@@ -687,20 +721,34 @@
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else {
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// inline `iteratorTemplate` template
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source = source.replace(/(( +)var iteratorTemplate *= *)([\s\S]+?\n\2.+?);\n/, (function() {
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// extract `iteratorTemplate` code
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var code = /^function[^{]+{([\s\S]+?)}$/.exec(lodash._iteratorTemplate)[1];
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var code = getFunctionSource(lodash._iteratorTemplate.source);
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code = removeWhitespace(code)
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// remove unnecessary code
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.replace(/\|\|\{\}|,__t,__j=Array.prototype.join|function print[^}]+}|\+''/g, '')
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.replace(/(\{);|;(\})/g, '$1$2')
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.replace(/\(\(__t=\(([^)]+)\)\)==null\?'':__t\)/g, '$1')
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// ensure escaped characters are interpreted correctly in the string literal
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.replace(/\\/g, '\\\\');
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// expand properties to avoid having to use a with-statement
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iteratorOptions.forEach(function(property) {
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code = code.replace(RegExp('([^\\w.])\\b' + property + '\\b', 'g'), '$1obj.' + property);
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});
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// add `code` to `Function()` as a string literal to avoid strict mode
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// errors caused by the required with-statement
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return '$1Function(\'obj\',\n$2 "' + code + '"\n$2);\n';
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// remove unnecessary code
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code = code
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.replace(/, *__t, *__j *= *Array.prototype.join|function print[^}]+}/g, '')
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.replace(/'(?:\\n|\s)+'/g, "''")
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.replace(/__p *\+= *' *';/g, '')
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.replace(/(__p *\+= *)' *' *\+/g, '$1')
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.replace(/\+\s*' *';/g, ';')
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.replace(/';(?:\\n|\s)*} *'/g, "'}'")
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.replace(/(\{) *;|; *(\})/g, '$1$2')
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.replace(/\(\(__t *= *\( *([^)]+) *\)\) *== *null *\? *'' *: *__t\)/g, '$1');
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// remove the with-statement
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code = code.replace(/ *with *\([^)]+\) *{/, '\n').replace(/\s*}(\s*)return /, '$1return ');
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// minor cleanup
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code = code.replace(/var __p;\s*__p/, 'var __p');
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// remove comments, including sourceURLs
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code = code.replace(/\s*\/\/.*(?:\n|$)/g, '');
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return '$1' + code + ';\n';
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}()));
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}
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@@ -253,13 +253,13 @@
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var snippets = source.match(
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RegExp([
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// match the `iteratorTemplate`
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'var iteratorTemplate\\b[\\s\\S]+?\\);\\n',
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'( +)var iteratorTemplate\\b[\\s\\S]+?\\n\\1}',
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// match methods created by `createIterator` calls
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'createIterator\\((?:{|[a-zA-Z]+)[\\s\\S]+?\\);\\n',
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// match variables storing `createIterator` options
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'( +)var [a-zA-Z]+IteratorOptions\\b[\\s\\S]+?\\n\\1}',
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'( +)var [a-zA-Z]+IteratorOptions\\b[\\s\\S]+?\\n\\2}',
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// match the the `createIterator` function
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'( +)function createIterator\\b[\\s\\S]+?\\n\\2}'
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'( +)function createIterator\\b[\\s\\S]+?\\n\\3}'
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].join('|'), 'g')
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);
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54
lodash.min.js
vendored
54
lodash.min.js
vendored
@@ -3,30 +3,30 @@
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Underscore.js 1.3.3 github.com/documentcloud/underscore/blob/master/LICENSE
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*/
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Ot,s.without=function(e){var t=[];if(!e)return t;for(var n=-1,r=e.length;++n<r;)0>w(arguments,e[n],1)&&t.push(e[n]);return t},s.wrap=function(e,t){return function(){var n=[e];return arguments.length&&et.apply(n,arguments),t.apply(this,n)}},s.zip=function(e){if(!e)return[];for(var t=-1,n=E(xt(arguments,"length")),r=Array(n);++t<n;)r[t]=xt(arguments,t);return r},s.zipObject=function(e,t){if(!e)return{};var n=-1,r=e.length,i={};for(t||(t=[]);++n<r;)i[e[n]]=t[n];return i},s.all=gt,s.any=lt,s.collect=
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St,s.detect=yt,s.each=bt,s.foldl=Tt,s.foldr=g,s.head=y,s.include=D,s.inject=Tt,s.methods=kt,s.select=G,s.tail=S,s.take=y,s.unique=T,o.prototype=s.prototype,L(s),o.prototype.chain=function(){return this._chain=n,this},o.prototype.value=function(){return this._wrapped},bt("pop push reverse shift sort splice unshift".split(" "),function(e){var t=Q[e];o.prototype[e]=function(){var e=this._wrapped;return t.apply(e,arguments),e.length===0&&delete e[0],this._chain&&(e=new o(e),e._chain=n),e}}),bt(["concat"
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||||
Reference in New Issue
Block a user