js-regexp

Ergonomic Rust bindings to the JavaScript standard built-in RegExp object

In WASM environments that are attached to a JavaScript runtime, depending on a crate like regex for regular expression matching can seem silly (at least when package size is a concern) - There's a perfectly fine regular expression engine right there, in JavaScript! And while js-sys does expose the standard built-in RegExp object, it does not aim to provide a convenient interface.
This crate aims to bridge that gap.

Usage

See the rustdoc documentation for detailed usage information.

Basic example

use js_regexp::{RegExp, Flags}

let re = RegExp::new(
    r#"(?<greeting>\w+), (?<name>\w+)"#,
    Flags::new("d").unwrap(),
)
.unwrap();

let result = re.exec("Hello, Alice!").unwrap();
let named_captures = result.captures.unwrap();
let named_captures = named_captures.get_named_captures_map();

assert_eq!("Hello, Alice", result.match_slice);
assert_eq!(0, result.match_index);
assert_eq!(12, result.match_length);
assert_eq!("Hello", named_captures.get("greeting").unwrap().slice);
assert_eq!(7, named_captures.get("name").unwrap().index);