This is not the recommended way to do it, hacking the js is not supported and will be overwritten next time you upgrade. If you want parenthesis on a dbr use: tm1-format-parenthesis
If you want to format a number you should write your own filter, they are very easy to create in Angular. The example below formats a number using accounting.js which is included in Canvas (the filter and the accounting.js library).
I googled that it was 1.3…1.4 Angular issue only, and other versions has parentheses in currency filter. Anyway I will try create my own filter as well.
I found (parentheses) were in the currency filter in old angular versions. But it look not too hard to create new one filter. I will update this forum as only I create some awesome filter😎