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Cleanup build.js and fix regression in minified build. [closes #19]

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Former-commit-id: 3b455cb277fa8c3fc70efca7b54c6746cde2ea6b
This commit is contained in:
John-David Dalton
2012-05-29 15:52:02 -04:00
parent 205ded45e2
commit a5712fc873
2 changed files with 96 additions and 79 deletions
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173
build.js
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@@ -10,9 +10,6 @@
var lodash = require(path.join(__dirname, 'lodash')),
minify = require(path.join(__dirname, 'build', 'minify'));
/** Flag used to specify a custom build */
var isCustom = false;
/** Shortcut used to convert array-like objects to arrays */
var slice = [].slice;
@@ -141,6 +138,23 @@
'zip': ['max', 'pluck']
};
/** Names of methods to filter for the build */
var filterMethods = Object.keys(dependencyMap);
/** Used to specify if `filterMethods` should be used for exclusion or inclusion */
var filterType = process.argv.reduce(function(result, value) {
if (!result) {
var pair = value.match(/^(exclude|include)=(.*)$/);
if (pair) {
filterMethods = lodash.intersection(filterMethods, pair[2].split(/, */).map(getRealName));
return pair[1];
}
}
}, '');
/** Flag used to specify a mobile build */
var isMobile = process.argv.indexOf('mobile') > -1;
/*--------------------------------------------------------------------------*/
/**
@@ -344,22 +358,14 @@
/*--------------------------------------------------------------------------*/
// custom build
process.argv.some(function(arg) {
// exit early if not the "exclude" or "include" command option
var pair = arg.match(/^(exclude|include)=(.*)$/);
if (!pair) {
return false;
(function() {
// exit early if "exclude" or "include" options aren't specified
if (!filterType) {
return;
}
var filterType = pair[1],
filterNames = lodash.intersection(Object.keys(dependencyMap), pair[2].split(/, */).map(getRealName));
// set custom build flag
isCustom = true;
// remove the specified functions and their dependants
if (filterType == 'exclude') {
filterNames.forEach(function(funcName) {
filterMethods.forEach(function(funcName) {
getDependants(funcName).concat(funcName).forEach(function(otherName) {
source = removeFunction(source, otherName);
});
@@ -367,13 +373,13 @@
}
// else remove all but the specified functions and their dependencies
else {
filterNames = lodash.uniq(filterNames.reduce(function(result, funcName) {
filterMethods = lodash.uniq(filterMethods.reduce(function(result, funcName) {
result.push.apply(result, getDependencies(funcName).concat(funcName));
return result;
}, []));
lodash.each(dependencyMap, function(dependencies, otherName) {
if (filterNames.indexOf(otherName) < 0) {
if (filterMethods.indexOf(otherName) < 0) {
source = removeFunction(source, otherName);
}
});
@@ -402,10 +408,22 @@
if (isRemoved(source, 'bind', 'functions', 'groupBy', 'invoke', 'isEqual', 'isFunction', 'result', 'sortBy', 'toArray')) {
source = removeVar(source, 'funcClass');
}
if (isRemoved(source, 'bind')) {
source = removeVar(source, 'nativeBind');
}
if (isRemoved(source, 'isArray')) {
source = removeVar(source, 'nativeIsArray');
}
if (isRemoved(source, 'keys')) {
source = removeVar(source, 'nativeKeys');
}
if (isRemoved(source, 'clone', 'isObject', 'keys')) {
source = removeVar(source, 'objectTypes');
source = removeFromCreateIterator(source, 'objectTypes');
}
if (isRemoved(source, 'bind', 'isArray', 'keys')) {
source = removeVar(source, 'reNative');
}
if (isRemoved(source, 'isEmpty', 'isEqual', 'isString', 'size')) {
source = removeVar(source, 'stringClass');
}
@@ -414,71 +432,70 @@
source = source.replace(/(?:\s*\/\*-+\*\/\s*){2,}/g, function(separators) {
return separators.match(/^\s*/)[0] + separators.slice(separators.lastIndexOf('/*'));
});
return true;
});
/*--------------------------------------------------------------------------*/
(function() {
// for mobile builds
if (process.argv.indexOf('mobile') > -1) {
// set custom build flag
isCustom = true;
// inline functions defined with `createIterator`
lodash.functions(lodash).forEach(function(funcName) {
var reFunc = RegExp('( +var ' + funcName + ' *= *)((?:[a-zA-Z]+ *\\|\\| *)?)createIterator\\(((?:{|[a-zA-Z])[\\s\\S]+?)\\);\\n'),
parts = source.match(reFunc);
// skip if not defined with `createIterator`
if (!parts) {
return;
}
source = source.replace(reFunc,
(funcName == 'keys'
? '$1$2' + lodash._createIterator(Function('return ' + parts[3])())
: '$1' + lodash[funcName]
) + ';\n'
);
});
// remove `iteratorTemplate`
source = removeVar(source, 'iteratorTemplate');
// remove JScript [[DontEnum]] fix from `isEqual`
source = source.replace(/(?:\s*\/\/.*\n)*( +)if *\(result *&& *hasDontEnumBug[\s\S]+?\n\1}\n/, '\n');
}
// for normal builds
else {
// extract `iteratorTemplate` source
var iteratorTemplateCode = /^function[^{]+{([\s\S]+?)}$/.exec(lodash._iteratorTemplate)[1];
// remove whitespace and unnecessary code
iteratorTemplateCode = removeWhitespace(iteratorTemplateCode)
.replace(/\|\|\{\}|,__t,__j=Array.prototype.join|function print[^}]+}|\+''/g, '')
.replace(/(\{);|;(\})/g, '$1$2')
.replace(/\(\(__t=\(([^)]+)\)\)==null\?'':__t\)/g, '$1');
// ensure escaped characters are interpreted correctly inside the `Function()` string
iteratorTemplateCode = iteratorTemplateCode.replace(/\\/g, '\\\\');
// add `iteratorTemplateCode` to `Function()` to avoid strict mode error
// for using a with-statement
iteratorTemplateCode = '$1Function(\'object\',\n$2 "' + iteratorTemplateCode + '"\n$2);\n';
// replace `template()` with `Function()`
source = source.replace(/(( +)var iteratorTemplate *= *)([\s\S]+?\n\2.+?);\n/, iteratorTemplateCode);
}
// remove pseudo private properties
source = source.replace(/(?:\s*\/\/.*)*\s*lodash\._(?:createIterator|iteratorTemplate)\b.+\n/g, '\n');
}());
/*--------------------------------------------------------------------------*/
if (isMobile) {
// inline functions defined with `createIterator`
lodash.functions(lodash).forEach(function(funcName) {
var reFunc = RegExp('( +var ' + funcName + ' *= *)((?:[a-zA-Z]+ *\\|\\| *)?)createIterator\\(((?:{|[a-zA-Z])[\\s\\S]+?)\\);\\n'),
parts = source.match(reFunc);
// skip if not defined with `createIterator`
if (!parts) {
return;
}
// extract function's code
var code = funcName == 'keys'
? '$1$2' + lodash._createIterator(Function('return ' + parts[3])())
: '$1' + lodash[funcName];
// format code
code = code.replace(/\n(?:.*)/g, function(match) {
match = match.slice(1);
return (match == '}' ? '\n ' : '\n ') + match;
}) + ';\n';
source = source.replace(reFunc, code);
});
// remove `iteratorTemplate`
source = removeVar(source, 'iteratorTemplate');
// remove JScript [[DontEnum]] fix from `isEqual`
source = source.replace(/(?:\s*\/\/.*\n)*( +)if *\(result *&& *hasDontEnumBug[\s\S]+?\n\1}\n/, '\n');
// remove IE `shift` and `splice` fix
source = source.replace(/(?:\s*\/\/.*\n)*( +)if *\(value.length *=== *0[\s\S]+?\n\1}\n/, '\n');
}
else {
// inline `iteratorTemplate` template
source = source.replace(/(( +)var iteratorTemplate *= *)([\s\S]+?\n\2.+?);\n/, (function() {
// extract `iteratorTemplate` code
var code = /^function[^{]+{([\s\S]+?)}$/.exec(lodash._iteratorTemplate)[1];
code = removeWhitespace(code)
// remove unnecessary code
.replace(/\|\|\{\}|,__t,__j=Array.prototype.join|function print[^}]+}|\+''/g, '')
.replace(/(\{);|;(\})/g, '$1$2')
.replace(/\(\(__t=\(([^)]+)\)\)==null\?'':__t\)/g, '$1')
// ensure escaped characters are interpreted correctly in the string literal
.replace(/\\/g, '\\\\');
// add `code` to `Function()` as a string literal to avoid strict mode
// errors caused by the required with-statement
return '$1Function(\'obj\',\n$2 "' + code + '"\n$2);\n';
}()));
}
// remove pseudo private properties
source = source.replace(/(?:\s*\/\/.*)*\s*lodash\._(?:createIterator|iteratorTemplate)\b.+\n/g, '\n');
/*--------------------------------------------------------------------------*/
// begin the minification process
if (isCustom) {
if (filterType || isMobile) {
fs.writeFileSync(path.join(__dirname, 'lodash.custom.js'), source);
minify(source, 'lodash.custom.min', function(result) {
fs.writeFileSync(path.join(__dirname, 'lodash.custom.min.js'), result);