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index.js
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index.js
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var gutil = require('gulp-util');
var jspm = require('jspm');
var Liftoff = require('liftoff');
var through = require('through2');
var Promise = require('bluebird');
Promise.longStackTraces();
var temp = require('temp').track();
var File = require('vinyl');
var fs = Promise.promisifyAll(require("fs"));
var path = require('path');
var projectName = require('./package.json').name;
module.exports = function(opts){
opts = opts || {};
return through.obj(function(file, enc, cb){
if( file.isNull() ){
cb();
return;
}
if( file.isStream() ){
this.emit('error', new gutil.PluginError(projectName, 'Streams are not supported.'));
cb();
return;
}
var enable_source_map = !!file.sourceMap;
var push = this.push.bind(this);
Promise.resolve()
.then(function(){
return set_jspm_package_path(file.base);
})
.then(function(jspmRoot){
return [Promise.promisify(temp.open)('gulp-jspm__build.js'), Promise.resolve(jspmRoot)];
})
.spread(function(tmp_file, jspmRoot){
return (
jspm[opts.selfExecutingBundle?'bundleSFX':'bundle'](
(function(){
var jspm_input = path.relative(jspmRoot, file.path);
if( opts.plugin ) {
jspm_input += '!';
if( opts.plugin.constructor === String ) {
jspm_input += opts.plugin;
}
}
if( opts.arithmetic ) {
jspm_input += ' ' + opts.arithmetic.trim();
}
return jspm_input;
})() ,
tmp_file.path ,
(function(){
var jspm_opts = {};
for(var i in opts) jspm_opts[i] = opts[i];
jspm_opts.sourceMaps = jspm_opts.sourceMaps || enable_source_map;
delete jspm_opts.plugin;
delete jspm_opts.arithmetic;
delete jspm_opts.selfExecutingBundle;
return jspm_opts;
})()
)
.then(function(){
return tmp_file.path;
})
);
})
.then(function(temp_path){
var results = {
temp_path: temp_path
};
return Promise.all(
[
fs.readFileAsync(temp_path)
.then(function(file_content){
if( enable_source_map ) {
var reSourceMapComment = /\n\/\/# sourceMappingURL=.+?$/;
results.contents = new Buffer(file_content.toString().replace(reSourceMapComment,''));
}
else {
results.contents = file_content;
}
})
].concat(
! enable_source_map ? [] : (
fs.readFileAsync(temp_path+'.map')
.then(function(file_content){
results.sourceMap = JSON.parse(file_content.toString());
})
)
)
)
.then(function(){
return results;
});
})
.then(function(results){
temp.cleanup();
return results;
})
.then(function(results){
var bundle_file =
new File({
base: file.base ,
path: (function(){
var basename = path.basename(file.path);
basename = basename.split('.');
basename.splice(1, 0, 'bundle');
basename = basename.join('.');
return path.join(path.dirname(file.path), basename);
})() ,
contents: results.contents
});
bundle_file.originalEntryPoint = file;
if( enable_source_map ) {
bundle_file.sourceMap = results.sourceMap;
bundle_file.sourceMap.file = bundle_file.relative;
bundle_file.sourceMap.sources =
bundle_file.sourceMap.sources.map(function(relative_to_temp){
return (
path.relative(
file.base,
path.resolve(
path.dirname(results.temp_path),
relative_to_temp))
);
});
}
return bundle_file;
})
.then(function(bundle_file){
// timeout to stop Promise to catch errors
setTimeout(function(){
push(bundle_file);
cb();
},0);
});
});
};
function set_jspm_package_path(directory){
return new Promise(function(resolve){
new Liftoff({
name: 'jspm',
configName: 'package',
extensions: {
'.json': null
}
})
.launch({
cwd: directory
}, function(env) {
if( env.configBase ) {
jspm.setPackagePath(env.configBase);
}
var packageJSON = require(env.configPath);
if (packageJSON && packageJSON.jspm && packageJSON.jspm.directories) {
resolve(path.join(env.configBase, packageJSON.jspm.directories.baseURL));
} else {
resolve(env.configBase);
}
});
})
}