---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: valid.js
---
# Input
```jsx
var regex = RegExp("x1f");
var regex = RegExp("[");
var regex = new RegExp("x1f");
var regex = new RegExp("[");
var regex = new RegExp("\\u{20}", "u");
var regex = new RegExp("\\u{1F}");
var regex = new RegExp("\\u{1F}", "g");
var regex = new RegExp("\\u{1F}", uflags);
var regex = new RegExp("\t");
var regex = new RegExp("\n");
var regex = /\t/;
var regex = /\n/;
var regex = /x1f/;
var regex = /\\x1f/;
var regex = /\u{20}/u;
var regex = /\u{1F}/;
var regex = /\u{1F}/g;
var regex = /\t/;
var regex = /\n/;
new (function foo() {})("\\x1f");
/[\u200E\u2066-\u2069]/gu;
```