CodeEditor - manually closing a tag causes crash

What is the issue and how can we reproduce it?

In an application containing the CodeEditor (in "html" mode) a blocking javascript error occurs when manually closing a tag .

The problem in source code is located in the "function is(token, type)...".
In the file sap\ui\codeeditor\js\ace\mode-javascript-dbg.js there are two versions of this function:

(1st version)
function is(token, type) {
return token && token.type.lastIndexOf(type + ".xml") > -1;
}

(2nd version)
function is(token, type) {
return token.type.lastIndexOf(type + ".xml") > -1;
}

The 2nd version is the one with produces the bug (when "token" is unndefined). When I replace this code
with the 1st version of the "is(..)" function, the bug is fixed.

Which OpenUI5 version is your project targeting?

1.152, 1.150

Is the issue device- or browser-specific?

No response

Confirmation

• I have searched the existing issues and reviewed the relevant documentation as well as the API reference.
• I am not disclosing any internal or sensitive information.

Start by reproducing the crash in an application using CodeEditor in "html" mode while manually closing a tag. Inspect the two is(token, type) implementations in sap/ui/codeeditor/js/ace/mode-javascript-dbg.js, then verify that closing a tag no longer produces a blocking JavaScript error in the targeted OpenUI5 versions 1.152 and 1.150.