tree-sitter-javascript

This crate provides a JavaScript grammar for the tree-sitter parsing library. To use this crate, add it to the [dependencies] section of your Cargo.toml file. (Note that you will probably also need to depend on the tree-sitter crate to use the parsed result in any useful way.)

[dependencies]
tree-sitter = "0.20"
tree-sitter-javascript = "0.20"

Typically, you will use the language function to add this grammar to a tree-sitter Parser, and then use the parser to parse some code.

The below example demonstrates a simple program that parses a JavaScript function and prints the result to your terminal.

use tree_sitter::Parser;

fn main() {
    let code = r#"
    function double(x) {
        return x * 2;
    }
"#;
    let mut parser = Parser::new();
    parser
        .set_language(tree_sitter_javascript::language())
        .expect("Error loading JavaScript grammar");
    let parsed = parser.parse(code, None);
    println!("{:#?}", parsed);
}

If you have any questions, please reach out to us in the tree-sitter discussions page.