Build error JS_Parse_Error

[DrMoriarty]

Hello!
My project can be built successfully in Debug mode (for iOS and Android). But when I disable debug mode and try to build I get this error:

Build Failed: Error
at new JS_Parse_Error (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:1534:18)
at js_error (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:1542:11)
at croak (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:2089:9)
at token_error (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:2097:9)
at unexpected (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:2103:9)
at semicolon (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:2123:56)
at simple_statement (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:2314:73)
at eval (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:2183:19)
at eval (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:2136:24)
at block_ (eval at <anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/gulp-uglify/node_modules/uglify-js/tools/node.js:28:1), <anonymous>:2429:20)
at /Applications/CocosCreator.app/Contents/Resources/app.asar/editor/core/builder.js:1:1995
at /Applications/CocosCreator.app/Contents/Resources/app.asar/editor/core/builder.js:1:944
at Gulp.doneCallback (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor/core/gulp-build.js:1:11735)
at Gulp.Orchestrator.stop (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/orchestrator/index.js:150:9)
at n (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor/core/gulp-build.js:1:3990)
at Object.callback (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor/core/gulp-build.js:1:5859)
at /Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/async/lib/async.js:906:35
at _arrayEach (/Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/async/lib/async.js:85:13)
at /Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/async/lib/async.js:898:17
at /Applications/CocosCreator.app/Contents/Resources/app.asar/node_modules/async/lib/async.js:44:16
at BrowserWindow.<anonymous> (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor/core/compiler.js:1:1276)
at BrowserWindow.g (events.js:286:16)
at emitOne (events.js:101:20)
at BrowserWindow.emit (events.js:188:7)

As far as I see uglify-js should throw new JS_Parse_Error with additional information in what file and where it has troubles. But I not see this information in CocosCreator log. It shows me only the stack log but not the content of thrown exception.

Also I can't modify library js files in order to add more verbose output because app.asar seems not to be a valid asar file:

bash-3.2$ asar list app.asar 
buffer.js:615
    throw new RangeError('index out of range');
    ^

RangeError: index out of range
    at checkOffset (buffer.js:615:11)
    at Buffer.readUInt32LE (buffer.js:677:5)
    at Pickle.getPayloadSize (/usr/local/lib/node_modules/asar/node_modules/chromium-pickle-js/lib/pickle.js:192:24)
    at new PickleIterator (/usr/local/lib/node_modules/asar/node_modules/chromium-pickle-js/lib/pickle.js:27:28)
    at Pickle.createIterator (/usr/local/lib/node_modules/asar/node_modules/chromium-pickle-js/lib/pickle.js:144:12)
    at Object.module.exports.readArchiveHeaderSync (/usr/local/lib/node_modules/asar/lib/disk.js:91:31)
    at Object.module.exports.readFilesystemSync (/usr/local/lib/node_modules/asar/lib/disk.js:97:25)
    at Object.module.exports.listPackage (/usr/local/lib/node_modules/asar/lib/asar.js:174:15)
    at Command.<anonymous> (/usr/local/lib/node_modules/asar/bin/asar.js:42:27)
    at Command.listener (/usr/local/lib/node_modules/asar/node_modules/commander/index.js:301:8)

bash-3.2$ asar --version
v0.13.0

CocosCreator 1.3.3 for MacOS

[DrMoriarty]

Finally I made debug build and run uglifyjs over build/jsb-default/src/* files. It shows me full error description so I fixed the issue.
It would be nice if you fixed the cocos creator build log or provided any another way to show full build log.

[jareguo]

Thanks @DrMoriarty, Is it an error about ES6 used in plugin scripts?

[DrMoriarty]

@jareguo Yes, it shows an error for every using let directive

[jareguo]

Sorry you can not use ES6 in plugin scripts! you should transpile to ES5 by yourself.