UglifyJs Unexpected token: name (Time)

[alkuzman]

Bug Report or Feature Request (mark with an x)

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- [ ] feature request

Building production using ng build --prod results with the following error:
ERROR in vendor.6524f61fda4d53a6f933.bundle.js from UglifyJs Unexpected token: name (Time) [vendor.6524f61fda4d53a6f933.bundle.js:18068,6]

I can't find Time in my project path, i think it is from some of the libraries i use.

Before i updated Angular, and Angular CLI
I used Angular 4.1.3 and Angular CLI 1.0.6 and I was getting similar error but insted of Time, unexpected token was PolicyMappings which was from pkijs

I also found Time class in pkijs

Versions.

@angular/cli: 1.1.1
node: 7.5.0
os: win32 x64
@angular/animations: 4.2.1
@angular/common: 4.2.1
@angular/compiler: 4.2.1
@angular/core: 4.2.1
@angular/flex-layout: 2.0.0-beta.8
@angular/forms: 4.2.1
@angular/http: 4.2.1
@angular/material: 2.0.0-beta.6-88089a7
@angular/platform-browser: 4.2.1
@angular/platform-browser-dynamic: 4.2.1
@angular/router: 4.2.1
@angular/cli: 1.1.1
@angular/compiler-cli: 4.2.1
@ngtools/webpack: 1.4.1

Repro steps.

npm install pkijs
npm install @types/pkijs
ng build --prod

[sumitarora]

@AKuzmanoski Are you getting any errors while running the dev build?

[alkuzman]

No, it works fine on dev mode

[jmls]

I've started hitting this -

ERROR in main.1dae05ad85948e9171be.bundle.js from UglifyJs
Unexpected token: name (TaskTableComponent) [main.1dae05ad85948e9171be.bundle.js:53,6]
``

In my case, `TaskTableComponent` is a component defined in my app, loaded in the module

import { TaskTableComponent } from './task-table/task-table.component';

and I get no errors in dev mode (the component also works just fine)

[alkuzman]

Can you share some details abot TaskTableComponent?

[jmls]

I may have found the problem - I had a target of es6, because es5 was causing me problems with
this.allowedFields = [ ...new Set(this.allowedFields) ].sort((a,b) => { return a.toLowerCase() > b.toLowerCase() ? 1 : -1});

I think that es6 does not compile properly with uglify.js , which may be throwing out the errors

Any idea on how I can get uglify to work with es6 ?

[marino-andriamialy]

I've resolved this using UglifyJS2#harmony-v2.8.22 --dev for ES6:

yarn add git://github.com/mishoo/UglifyJS2#harmony-v2.8.22 --dev

documented at: https://www.npmjs.com/package/uglifyjs-webpack-plugin

[alexander-kovalev]

I changed compilerOptions.target from es6 to es5 and this error disappeared.

[kirillgroshkov]

I have compilerOptions.target of es5 and still have ERROR from UglifyJS. I figured it's because I'm using pify package that's ES6. Still haven't found a solution yet.

[daangeerdink]

I have the same issue, with a library required by AutobahnJS called cbor. There I get this error when trying to build with --prod:

ERROR in vendor.f46aa55cec82811ad623.bundle.js from UglifyJs
Unexpected token: name (Decoder) [[...]/node_modules/cbor/lib/decoder.js:48,0][vendor.f46aa55cec82811ad623.bundle.js:23235,6]

Anyone have a solution?

[toregua]

Same problem for me with quilljs when i try to create a custom theme based on snow theme, when i run "ng build --prod" :

ERROR in main.b5edce071b49acaa29f7.bundle.js from UglifyJs
Unexpected token: name (MyCustomTheme) [main.b5edce071b49acaa29f7.bundle.js:30679,6]

ERROR in vendor.f179b6171896e95f4169.bundle.js from UglifyJs
Unexpected token: name (debug) [vendor.f179b6171896e95f4169.bundle.js:16561,4]

Please give us a solution/workaround

[wingsbob]

I think all these issues are supposed to be gathered in #2907

[FrancescoBorzi]

I can confirm this issue. Only happens when I set the target to es6. Using es5 the issue is not there.

[anhmaker]

I changed compilerOptions.target from es6 to es5 and OK too.

[hubert17]

I as well can confirm that you can't switch back the target to es5 if you have package like SignalR core which propably uses es6.

[wingsbob]

Upgrade to a newer version of angular-cli, this has been fixed for a little while now: #7610

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