charset=Shift_JIS will fail to parse URI.js with a syntax error caused by non-ASCII characters in RegExp

Steps to Reproduce:

1. Have an HTML payload where server gives response header content-type: text/html;charset=Shift_JIS
2. Include the URI.js file with a script tag, use a compressed version of URI.js (not sure if same issue happens on the uncompressed one)

Unfortunately I can't find an easy way to give a link for this easily, but if it's necessary I could produce one maybe with codesandbox.

Expected:

The Javascript include should run, there should be no errors in the console

Actual:

The Javascript fails to parse with an error in the logs:

Uncaught SyntaxError: Unexpected token ':'

Root Cause:

There are non-ASCII characters inside of a Regular Expression in a couple places, example:
https://github.com/medialize/URI.js/blob/b655c1b972111ade9f181b02374305942e68e30a/src/URI.js#L231

The non-ASCII characters «»“”‘’ are interpreted differently when the charset is set to Shift_JIS on the HTML page as a response header, and it causes the regular expression not to be closed properly, running into the next lines making a syntax error in the middle of the JSON. The same behavior is seen in Firefox and Chrome, I have not checked Edge.

Proposed solution:

Don't use non-ASCII characters which are unsafe when charsets are changed on the page, instead use a String that will be constructed with escaped characters:

  URI.find_uri_expression = new RegExp("\\b((?:[a-z][\\w-]+:(?:\\/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}\\/)(?:[^\\s()<>]+|\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\))+(?:\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\)|[^\\s`!()\\[\\]{};:'\".,<>?\xab\xbb\u201c\u201d\u2018\u2019]))", "ig");

One other place:
https://github.com/medialize/URI.js/blob/b655c1b972111ade9f181b02374305942e68e30a/src/URI.js#L238

Could update to this:

    trim: new RegExp("[`!()\\[\\]{};:'\".,<>?\xab\xbb\u201c\u201d\u201E\u2018\u2019]+$"),

These are 2 places, there might be more.

Start by inspecting src/URI.js at the referenced lines around 231 and 238, then reproduce the compressed build in an HTML page served with a Shift_JIS charset. Replace the unsafe non-ASCII RegExp characters as proposed and verify that the URI.js script parses without a console syntax error.