Comments in JavaScript be mangled if the comment contain a newline

[ericcornelissen]

Bug Report

• Package(s): language-js
• Version(s): v0.1.24

Description

When mangling a JavaScript script with comments, the language-js plugin might accidentally mangle in comments if the comment contains a newline.

Proof of Concept

1. Have a JavaScript file with mangle-able JS in a multiline comment (/* */). For example:

   var foos = document.querySelectorAll(".cls-foo");
   /*
   var bars = document.querySelectorAll(".cls-bar");
   */

2. Run WebMangler CLI (version 0.1.6) with WebMangler Core (version 0.1.24) and the default mangler plugins & default language plugins (at the exact versions found in the WebMangler Core package.json).

3. Observe that the comments have been mangled. For the example above:

   var foos = document.querySelectorAll(".a");
   /*
   var bars = document.querySelectorAll(".b");
   */