Babel repl text formatting issue

[Link to repl](https://babeljs.io/repl/#?browsers=&build=&builtIns=false&spec=false&loose=false&code_lz=MYGwhgzhAECC0G8BQ1oGIAe0C80AMA3CtMAPYB2EALgE4CuwVpNAFAJTKoCQVAFgJYQAdJgDUooqlRlKpEAFMhIUgHMWAcgCe6gDTQ-gkRjaToAXyQWZ1aDFzl5AdzjsiSIA&debug=false&forceAllTransforms=false&shippedProposals=false&circleciRepo=&evaluate=true&fileSize=false&timeTravel=false&sourceType=module&lineWrap=true&presets=es2015%2Creact%2Cstage-2&prettier=false&targets=&version=7.8.4&externalPlugins=%40babel%2Fplugin-proposal-function-bind%407.8.3%2C%40babel%2Fplugin-proposal-class-properties%407.8.3%2C%40babel%2Fplugin-proposal-private-methods%407.8.3). Screenshot:
As you can see red is marked to the end of line including `;` and `)`

Open the linked Babel REPL and reproduce the reported formatting, noting how the red highlight extends through the semicolon and closing parenthesis. Trace the REPL's formatting or highlighting behavior from there; the issue is done when the highlighted range matches the actual problematic text rather than the rest of the line.

Written by the indexing model from the issue text.