asdf-games/node_modules/browserify/index.js

867 lines
26 KiB
JavaScript

var path = require('path');
var mdeps = require('module-deps');
var depsSort = require('deps-sort');
var bpack = require('browser-pack');
var insertGlobals = require('insert-module-globals');
var syntaxError = require('syntax-error');
var builtins = require('./lib/builtins.js');
var splicer = require('labeled-stream-splicer');
var through = require('through2');
var concat = require('concat-stream');
var inherits = require('inherits');
var EventEmitter = require('events').EventEmitter;
var xtend = require('xtend');
var isArray = Array.isArray;
var defined = require('defined');
var has = require('has');
var sanitize = require('htmlescape').sanitize;
var shasum = require('shasum');
var bresolve = require('browser-resolve');
var resolve = require('resolve');
var readonly = require('read-only-stream');
module.exports = Browserify;
inherits(Browserify, EventEmitter);
var fs = require('fs');
var path = require('path');
var cachedPathRelative = require('cached-path-relative');
var paths = {
empty: path.join(__dirname, 'lib/_empty.js')
};
function Browserify (files, opts) {
var self = this;
if (!(this instanceof Browserify)) return new Browserify(files, opts);
if (!opts) opts = {};
if (typeof files === 'string' || isArray(files) || isStream(files)) {
opts = xtend(opts, { entries: [].concat(opts.entries || [], files) });
}
else opts = xtend(files, opts);
if (opts.node) {
opts.bare = true;
opts.browserField = false;
}
if (opts.bare) {
opts.builtins = false;
opts.commondir = false;
if (opts.insertGlobalVars === undefined) {
opts.insertGlobalVars = {}
Object.keys(insertGlobals.vars).forEach(function (name) {
if (name !== '__dirname' && name !== '__filename') {
opts.insertGlobalVars[name] = undefined;
}
})
}
}
self._options = opts;
if (opts.noparse) opts.noParse = opts.noparse;
if (opts.basedir !== undefined && typeof opts.basedir !== 'string') {
throw new Error('opts.basedir must be either undefined or a string.');
}
opts.dedupe = opts.dedupe === false ? false : true;
self._external = [];
self._exclude = [];
self._ignore = [];
self._expose = {};
self._hashes = {};
self._pending = 0;
self._transformOrder = 0;
self._transformPending = 0;
self._transforms = [];
self._entryOrder = 0;
self._ticked = false;
var browserField = opts.browserField
self._bresolve = browserField === false
? function (id, opts, cb) {
if (!opts.basedir) opts.basedir = path.dirname(opts.filename)
resolve(id, opts, cb)
}
: typeof browserField === 'string'
? function (id, opts, cb) {
opts.browser = browserField
bresolve(id, opts, cb)
}
: bresolve
;
self._syntaxCache = {};
var ignoreTransform = [].concat(opts.ignoreTransform).filter(Boolean);
self._filterTransform = function (tr) {
if (isArray(tr)) {
return ignoreTransform.indexOf(tr[0]) === -1;
}
return ignoreTransform.indexOf(tr) === -1;
};
self.pipeline = self._createPipeline(opts);
[].concat(opts.transform).filter(Boolean).filter(self._filterTransform)
.forEach(function (tr) {
self.transform(tr);
});
[].concat(opts.entries).filter(Boolean).forEach(function (file) {
self.add(file, { basedir: opts.basedir });
});
[].concat(opts.require).filter(Boolean).forEach(function (file) {
self.require(file, { basedir: opts.basedir });
});
[].concat(opts.plugin).filter(Boolean).forEach(function (p) {
self.plugin(p, { basedir: opts.basedir });
});
}
Browserify.prototype.require = function (file, opts) {
var self = this;
if (isArray(file)) {
file.forEach(function (x) {
if (typeof x === 'object') {
self.require(x.file, xtend(opts, x));
}
else self.require(x, opts);
});
return this;
}
if (!opts) opts = {};
var basedir = defined(opts.basedir, self._options.basedir, process.cwd());
var expose = opts.expose;
if (file === expose && /^[\.]/.test(expose)) {
expose = '/' + relativePath(basedir, expose);
}
if (expose === undefined && this._options.exposeAll) {
expose = true;
}
if (expose === true) {
expose = '/' + relativePath(basedir, file);
}
if (isStream(file)) {
self._pending ++;
var order = self._entryOrder ++;
file.pipe(concat(function (buf) {
var filename = opts.file || file.file || path.join(
basedir,
'_stream_' + order + '.js'
);
var id = file.id || expose || filename;
if (expose || opts.entry === false) {
self._expose[id] = filename;
}
if (!opts.entry && self._options.exports === undefined) {
self._bpack.hasExports = true;
}
var rec = {
source: buf.toString('utf8'),
entry: defined(opts.entry, false),
file: filename,
id: id
};
if (rec.entry) rec.order = order;
if (rec.transform === false) rec.transform = false;
self.pipeline.write(rec);
if (-- self._pending === 0) self.emit('_ready');
}));
return this;
}
var row;
if (typeof file === 'object') {
row = xtend(file, opts);
}
else if (!opts.entry && isExternalModule(file)) {
// external module or builtin
row = xtend(opts, { id: expose || file, file: file });
}
else {
row = xtend(opts, { file: path.resolve(basedir, file) });
}
if (!row.id) {
row.id = expose || row.file;
}
if (expose || !row.entry) {
// Make this available to mdeps so that it can assign the value when it
// resolves the pathname.
row.expose = row.id;
}
if (opts.external) return self.external(file, opts);
if (row.entry === undefined) row.entry = false;
if (!row.entry && self._options.exports === undefined) {
self._bpack.hasExports = true;
}
if (row.entry) row.order = self._entryOrder ++;
if (opts.transform === false) row.transform = false;
self.pipeline.write(row);
return self;
};
Browserify.prototype.add = function (file, opts) {
var self = this;
if (!opts) opts = {};
if (isArray(file)) {
file.forEach(function (x) { self.add(x, opts) });
return this;
}
return this.require(file, xtend({ entry: true, expose: false }, opts));
};
Browserify.prototype.external = function (file, opts) {
var self = this;
if (isArray(file)) {
file.forEach(function (f) {
if (typeof f === 'object') {
self.external(f, xtend(opts, f));
}
else self.external(f, opts)
});
return this;
}
if (file && typeof file === 'object' && typeof file.bundle === 'function') {
var b = file;
self._pending ++;
var bdeps = {};
var blabels = {};
b.on('label', function (prev, id) {
self._external.push(id);
if (prev !== id) {
blabels[prev] = id;
self._external.push(prev);
}
});
b.pipeline.get('deps').push(through.obj(function (row, enc, next) {
bdeps = xtend(bdeps, row.deps);
this.push(row);
next();
}));
self.on('dep', function (row) {
Object.keys(row.deps).forEach(function (key) {
var prev = bdeps[key];
if (prev) {
var id = blabels[prev];
if (id) {
row.indexDeps[key] = id;
}
}
});
});
b.pipeline.get('label').once('end', function () {
if (-- self._pending === 0) self.emit('_ready');
});
return this;
}
if (!opts) opts = {};
var basedir = defined(opts.basedir, process.cwd());
this._external.push(file);
this._external.push('/' + relativePath(basedir, file));
return this;
};
Browserify.prototype.exclude = function (file, opts) {
if (!opts) opts = {};
if (isArray(file)) {
var self = this;
file.forEach(function(file) {
self.exclude(file, opts);
});
return this;
}
var basedir = defined(opts.basedir, process.cwd());
this._exclude.push(file);
this._exclude.push('/' + relativePath(basedir, file));
return this;
};
Browserify.prototype.ignore = function (file, opts) {
if (!opts) opts = {};
if (isArray(file)) {
var self = this;
file.forEach(function(file) {
self.ignore(file, opts);
});
return this;
}
var basedir = defined(opts.basedir, process.cwd());
// Handle relative paths
if (file[0] === '.') {
this._ignore.push(path.resolve(basedir, file));
}
else {
this._ignore.push(file);
}
return this;
};
Browserify.prototype.transform = function (tr, opts) {
var self = this;
if (typeof opts === 'function' || typeof opts === 'string') {
tr = [ opts, tr ];
}
if (isArray(tr)) {
opts = tr[1];
tr = tr[0];
}
//if the bundler is ignoring this transform
if (typeof tr === 'string' && !self._filterTransform(tr)) {
return this;
}
function resolved () {
self._transforms[order] = rec;
-- self._pending;
if (-- self._transformPending === 0) {
self._transforms.forEach(function (transform) {
self.pipeline.write(transform);
});
if (self._pending === 0) {
self.emit('_ready');
}
}
}
if (!opts) opts = {};
opts._flags = '_flags' in opts ? opts._flags : self._options;
var basedir = defined(opts.basedir, this._options.basedir, process.cwd());
var order = self._transformOrder ++;
self._pending ++;
self._transformPending ++;
var rec = {
transform: tr,
options: opts,
global: opts.global
};
if (typeof tr === 'string') {
var topts = {
basedir: basedir,
paths: (self._options.paths || []).map(function (p) {
return path.resolve(basedir, p);
})
};
resolve(tr, topts, function (err, res) {
if (err) return self.emit('error', err);
rec.transform = res;
resolved();
});
}
else process.nextTick(resolved);
return this;
};
Browserify.prototype.plugin = function (p, opts) {
if (isArray(p)) {
opts = p[1];
p = p[0];
}
if (!opts) opts = {};
var basedir = defined(opts.basedir, this._options.basedir, process.cwd());
if (typeof p === 'function') {
p(this, opts);
}
else {
var pfile = resolve.sync(String(p), { basedir: basedir })
var f = require(pfile);
if (typeof f !== 'function') {
throw new Error('plugin ' + p + ' should export a function');
}
f(this, opts);
}
return this;
};
Browserify.prototype._createPipeline = function (opts) {
var self = this;
if (!opts) opts = {};
this._mdeps = this._createDeps(opts);
this._mdeps.on('file', function (file, id) {
pipeline.emit('file', file, id);
self.emit('file', file, id);
});
this._mdeps.on('package', function (pkg) {
pipeline.emit('package', pkg);
self.emit('package', pkg);
});
this._mdeps.on('transform', function (tr, file) {
pipeline.emit('transform', tr, file);
self.emit('transform', tr, file);
});
var dopts = {
index: !opts.fullPaths && !opts.exposeAll,
dedupe: opts.dedupe,
expose: this._expose
};
this._bpack = bpack(xtend(opts, { raw: true }));
var pipeline = splicer.obj([
'record', [ this._recorder() ],
'deps', [ this._mdeps ],
'json', [ this._json() ],
'unbom', [ this._unbom() ],
'unshebang', [ this._unshebang() ],
'syntax', [ this._syntax() ],
'sort', [ depsSort(dopts) ],
'dedupe', [ this._dedupe() ],
'label', [ this._label(opts) ],
'emit-deps', [ this._emitDeps() ],
'debug', [ this._debug(opts) ],
'pack', [ this._bpack ],
'wrap', []
]);
if (opts.exposeAll) {
var basedir = defined(opts.basedir, process.cwd());
pipeline.get('deps').push(through.obj(function (row, enc, next) {
if (self._external.indexOf(row.id) >= 0) return next();
if (self._external.indexOf(row.file) >= 0) return next();
if (isAbsolutePath(row.id)) {
row.id = '/' + relativePath(basedir, row.file);
}
Object.keys(row.deps || {}).forEach(function (key) {
row.deps[key] = '/' + relativePath(basedir, row.deps[key]);
});
this.push(row);
next();
}));
}
return pipeline;
};
Browserify.prototype._createDeps = function (opts) {
var self = this;
var mopts = xtend(opts);
var basedir = defined(opts.basedir, process.cwd());
// Let mdeps populate these values since it will be resolving file paths
// anyway.
mopts.expose = this._expose;
mopts.extensions = [ '.js', '.json' ].concat(mopts.extensions || []);
self._extensions = mopts.extensions;
mopts.transform = [];
mopts.transformKey = defined(opts.transformKey, [ 'browserify', 'transform' ]);
mopts.postFilter = function (id, file, pkg) {
if (opts.postFilter && !opts.postFilter(id, file, pkg)) return false;
if (self._external.indexOf(file) >= 0) return false;
if (self._exclude.indexOf(file) >= 0) return false;
//filter transforms on module dependencies
if (pkg && pkg.browserify && pkg.browserify.transform) {
//In edge cases it may be a string
pkg.browserify.transform = [].concat(pkg.browserify.transform)
.filter(Boolean)
.filter(self._filterTransform);
}
return true;
};
mopts.filter = function (id) {
if (opts.filter && !opts.filter(id)) return false;
if (self._external.indexOf(id) >= 0) return false;
if (self._exclude.indexOf(id) >= 0) return false;
if (opts.bundleExternal === false && isExternalModule(id)) {
return false;
}
return true;
};
mopts.resolve = function (id, parent, cb) {
if (self._ignore.indexOf(id) >= 0) return cb(null, paths.empty, {});
self._bresolve(id, parent, function (err, file, pkg) {
if (file && self._ignore.indexOf(file) >= 0) {
return cb(null, paths.empty, {});
}
if (file && self._ignore.length) {
var nm = file.replace(/\\/g, '/').split('/node_modules/')[1];
if (nm) {
nm = nm.split('/')[0];
if (self._ignore.indexOf(nm) >= 0) {
return cb(null, paths.empty, {});
}
}
}
if (file) {
var ex = '/' + relativePath(basedir, file);
if (self._external.indexOf(ex) >= 0) {
return cb(null, ex);
}
if (self._exclude.indexOf(ex) >= 0) {
return cb(null, ex);
}
if (self._ignore.indexOf(ex) >= 0) {
return cb(null, paths.empty, {});
}
}
if (err) cb(err, file, pkg)
else if (file) {
if (opts.preserveSymlinks && parent.id !== self._mdeps.top.id) {
return cb(err, path.resolve(file), pkg, file)
}
fs.realpath(file, function (err, res) {
cb(err, res, pkg, file);
});
} else cb(err, null, pkg)
});
};
if (opts.builtins === false) {
mopts.modules = {};
self._exclude.push.apply(self._exclude, Object.keys(builtins));
}
else if (opts.builtins && isArray(opts.builtins)) {
mopts.modules = {};
opts.builtins.forEach(function (key) {
mopts.modules[key] = builtins[key];
});
}
else if (opts.builtins && typeof opts.builtins === 'object') {
mopts.modules = opts.builtins;
}
else mopts.modules = xtend(builtins);
Object.keys(builtins).forEach(function (key) {
if (!has(mopts.modules, key)) self._exclude.push(key);
});
mopts.globalTransform = [];
if (!this._bundled) {
this.once('bundle', function () {
self.pipeline.write({
transform: globalTr,
global: true,
options: {}
});
});
}
var no = [].concat(opts.noParse).filter(Boolean);
var absno = no.filter(function(x) {
return typeof x === 'string';
}).map(function (x) {
return path.resolve(basedir, x);
});
function globalTr (file) {
if (opts.detectGlobals === false) return through();
if (opts.noParse === true) return through();
if (no.indexOf(file) >= 0) return through();
if (absno.indexOf(file) >= 0) return through();
var parts = file.replace(/\\/g, '/').split('/node_modules/');
for (var i = 0; i < no.length; i++) {
if (typeof no[i] === 'function' && no[i](file)) {
return through();
}
else if (no[i] === parts[parts.length-1].split('/')[0]) {
return through();
}
else if (no[i] === parts[parts.length-1]) {
return through();
}
}
if (opts.commondir === false && opts.builtins === false) {
opts.insertGlobalVars = xtend({
__dirname: function(file, basedir) {
var dir = path.dirname(path.relative(basedir, file));
return 'require("path").join(__dirname,' + dir.split(path.sep).map(JSON.stringify).join(',') + ')';
},
__filename: function(file, basedir) {
var filename = path.relative(basedir, file);
return 'require("path").join(__dirname,' + filename.split(path.sep).map(JSON.stringify).join(',') + ')';
}
}, opts.insertGlobalVars);
}
var vars = xtend({
process: function () { return "require('_process')" },
}, opts.insertGlobalVars);
if (opts.bundleExternal === false) {
vars.process = undefined;
vars.buffer = undefined;
}
return insertGlobals(file, xtend(opts, {
debug: opts.debug,
always: opts.insertGlobals,
basedir: opts.commondir === false && isArray(opts.builtins)
? '/'
: opts.basedir || process.cwd()
,
vars: vars
}));
}
return mdeps(mopts);
};
Browserify.prototype._recorder = function (opts) {
var self = this;
var ended = false;
this._recorded = [];
if (!this._ticked) {
process.nextTick(function () {
self._ticked = true;
self._recorded.forEach(function (row) {
stream.push(row);
});
if (ended) stream.push(null);
});
}
var stream = through.obj(write, end);
return stream;
function write (row, enc, next) {
self._recorded.push(row);
if (self._ticked) this.push(row);
next();
}
function end () {
ended = true;
if (self._ticked) this.push(null);
}
};
Browserify.prototype._json = function () {
return through.obj(function (row, enc, next) {
if (/\.json$/.test(row.file)) {
row.source = 'module.exports=' + sanitize(row.source);
}
this.push(row);
next();
});
};
Browserify.prototype._unbom = function () {
return through.obj(function (row, enc, next) {
if (/^\ufeff/.test(row.source)) {
row.source = row.source.replace(/^\ufeff/, '');
}
this.push(row);
next();
});
};
Browserify.prototype._unshebang = function () {
return through.obj(function (row, enc, next) {
if (/^#!/.test(row.source)) {
row.source = row.source.replace(/^#![^\n]*\n/, '');
}
this.push(row);
next();
});
};
Browserify.prototype._syntax = function () {
var self = this;
return through.obj(function (row, enc, next) {
var h = shasum(row.source);
if (typeof self._syntaxCache[h] === 'undefined') {
var err = syntaxError(row.source, row.file || row.id);
if (err) return this.emit('error', err);
self._syntaxCache[h] = true;
}
this.push(row);
next();
});
};
Browserify.prototype._dedupe = function () {
return through.obj(function (row, enc, next) {
if (!row.dedupeIndex && row.dedupe) {
row.source = 'arguments[4]['
+ JSON.stringify(row.dedupe)
+ '][0].apply(exports,arguments)'
;
row.nomap = true;
}
else if (row.dedupeIndex) {
row.source = 'arguments[4]['
+ JSON.stringify(row.dedupeIndex)
+ '][0].apply(exports,arguments)'
;
row.nomap = true;
}
if (row.dedupeIndex && row.indexDeps) {
row.indexDeps.dup = row.dedupeIndex;
}
this.push(row);
next();
});
};
Browserify.prototype._label = function (opts) {
var self = this;
var basedir = defined(opts.basedir, process.cwd());
return through.obj(function (row, enc, next) {
var prev = row.id;
if (self._external.indexOf(row.id) >= 0) return next();
if (self._external.indexOf('/' + relativePath(basedir, row.id)) >= 0) {
return next();
}
if (self._external.indexOf(row.file) >= 0) return next();
if (row.index) row.id = row.index;
self.emit('label', prev, row.id);
if (row.indexDeps) row.deps = row.indexDeps || {};
Object.keys(row.deps).forEach(function (key) {
if (self._expose[key]) {
row.deps[key] = key;
return;
}
var afile = path.resolve(path.dirname(row.file), key);
var rfile = '/' + relativePath(basedir, afile);
if (self._external.indexOf(rfile) >= 0) {
row.deps[key] = rfile;
}
if (self._external.indexOf(afile) >= 0) {
row.deps[key] = rfile;
}
if (self._external.indexOf(key) >= 0) {
row.deps[key] = key;
return;
}
for (var i = 0; i < self._extensions.length; i++) {
var ex = self._extensions[i];
if (self._external.indexOf(rfile + ex) >= 0) {
row.deps[key] = rfile + ex;
break;
}
}
});
if (row.entry || row.expose) {
self._bpack.standaloneModule = row.id;
}
this.push(row);
next();
});
};
Browserify.prototype._emitDeps = function () {
var self = this;
return through.obj(function (row, enc, next) {
self.emit('dep', row);
this.push(row);
next();
})
};
Browserify.prototype._debug = function (opts) {
var basedir = defined(opts.basedir, process.cwd());
return through.obj(function (row, enc, next) {
if (opts.debug) {
row.sourceRoot = 'file://localhost';
row.sourceFile = relativePath(basedir, row.file);
}
this.push(row);
next();
});
};
Browserify.prototype.reset = function (opts) {
if (!opts) opts = {};
var hadExports = this._bpack.hasExports;
this.pipeline = this._createPipeline(xtend(opts, this._options));
this._bpack.hasExports = hadExports;
this._entryOrder = 0;
this._bundled = false;
this.emit('reset');
};
Browserify.prototype.bundle = function (cb) {
var self = this;
if (cb && typeof cb === 'object') {
throw new Error(
'bundle() no longer accepts option arguments.\n'
+ 'Move all option arguments to the browserify() constructor.'
);
}
if (this._bundled) {
var recorded = this._recorded;
this.reset();
recorded.forEach(function (x) {
self.pipeline.write(x);
});
}
var output = readonly(this.pipeline);
if (cb) {
output.on('error', cb);
output.pipe(concat(function (body) {
cb(null, body);
}));
}
function ready () {
self.emit('bundle', output);
self.pipeline.end();
}
if (this._pending === 0) ready();
else this.once('_ready', ready);
this._bundled = true;
return output;
};
function isStream (s) { return s && typeof s.pipe === 'function' }
function isAbsolutePath (file) {
var regexp = process.platform === 'win32' ?
/^\w:/ :
/^\//;
return regexp.test(file);
}
function isExternalModule (file) {
var regexp = process.platform === 'win32' ?
/^(\.|\w:)/ :
/^[\/.]/;
return !regexp.test(file);
}
function relativePath (from, to) {
// Replace \ with / for OS-independent behavior
return cachedPathRelative(from, to).replace(/\\/g, '/');
}