Minified Script: Invalid regular expression

I’m submitting a…

[ ] Regression (a behavior that used to work and stopped working in a new release)
[X] Bug report  
[ ] Performance issue
[ ] Feature request
[ ] Documentation issue or request
[ ] Other... Please describe:

Browser:

• Chrome version 74
• Firefox version XX
• IE version XX
• Edge version XX
• Safari version XX

Library version

Library version: 1.0.1

## Current behavior
As soon as the script is loaded it throws the regex error and "Msal is not defined". Seems to work fine in a local environment, but fails on Azure app service.

## Expected behavior
Successfully load...

## Minimal reproduction of the problem with instructions
There was no problem when run locally, but it won't load when deployed to an Azure app service.

I think it’s related to here:

var re_btou = new RegExp([
  '[\xC0-\xDF][\x80-\xBF]',
  '[\xE0-\xEF][\x80-\xBF]{2}',
  '[\xF0-\xF7][\x80-\xBF]{3}'
].join('|'), 'g');

[Pheil]

Here’s my results running locally with my Chrome extension.

1.0.2 Min - NoK 1.0.2 - OK 1.0.1 Min - NoK 1.0.1 - OK 1.0.0 Min - OK 1.0.0 - OK

I’m not an expert, but shouldn’t the minimization not change the code @hunterwebapps mentioned to this? Looks almost like an encoding conversion issue.

re_btou=new RegExp(["[À-ß][€-¿]","[à -ï][€-¿]{2}","[ð-÷][€-¿]{3}"]

[DarylThayil]

great closing issue, thanks for feedback