Unexpected token `||=`

[Tam]

🐛 Bug Report

Scanner throws an "Unexpected token" error when coming across Logical OR assignment ||=.

To Reproduce

Scan code including the following (or something similar):

let test = false;
test ||= null;

Expected behavior

The scanner should have no problem parsing the code since it's valid JS.

Your Environment

• runtime version: Node v21.6.2
• i18next version: i18next-scanner 4.4.0, i18next 23.11.5
• os: Mac

[af185178]

I may have had something similar for ??=, fixed it by bumping acorn's ecmaVersion from 2020 to 2022