uglifyjs mangle props ".source" error

Question

I have some problems using UglifyJS.
When i am using uglifyjs with this command:
uglifyjs -o live_ugly.js --compress --mangle-props 1 --mangle -r "$,require,exports" live.js

I gives me an error : Cannot read property 'source' of undefined

The code for this line is : new RegExp(this.Qd.source + "|" + /\d{1,2}/.source)

The code before uglify is : new RegExp(this._ordinalParse.source+"|"+/\d{1,2}/.source

I have ReactJS code in it too. The source code i am trying to mangle went through webpack before.

What am i doing wrong here?

`new RegExp(this.Qd.source + "|" + /\d{1,2}/.source)` from which file? — Thaadikkaaran, Jan 12 '17 at 09:27
I just added a comment, it from 'new RegExp(this._ordinalParse.source+"|"+/\d{1,2}/.source' , i think it's from moment.js — Razvan, Jan 12 '17 at 09:28
My question is that `new RegExp(this._ordinalParse.source+"|"+/\d{1,2}/.source` is in `live_ugly.js` file? — Thaadikkaaran, Jan 12 '17 at 09:30
No, it's in the original file -> live.js. new RegExp(this.Qd.source + "|" + /\d{1,2}/.source) is the output of uglifyjs — Razvan, Jan 12 '17 at 09:31

score 0 · Answer 1 · answered Jan 13 '17 at 07:29

0

Fixed it by adding the compress parameter to UglifyJsPlugin

answered Jan 13 '17 at 07:29

Razvan

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uglifyjs mangle props ".source" error

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