await using file = await fs.open("example.txt", "r"); is causing syntax error
Author: yushliCreated Feb 16, 2026Updated Feb 16, 2026
Uglify version (uglifyjs -V)
uglify-js 3.19.3
JavaScript input
From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/await_using, the following code is causing syntax error:
await using file = await fs.open("example.txt", "r");
JavaScript output or error produced.
ERROR: Unexpected token: name «file», expected: punc «;»
Source: mishoo/UglifyJS