Adding `swc_es_parser` library as a dependency

Run this command in a terminal, in your project's directory:

cargo add swc_es_parser

To add it manually, edit your project's Cargo.toml file and add to the [dependencies] section:

swc_es_parser = "0.1.0"

The swc_es_parser library will be automatically available globally. Read the swc_es_parser library documentation.

Back to the crate overview.

Readme

swc_es_parser

swc_es_parser is a bootstrap ECMAScript parser that builds arena-backed nodes from swc_es_ast.

Goals

Parse source directly into swc_es_ast handles.
Expose a small parser API (Lexer, Parser, parse_file_as_*).
Keep parser errors in a crate-local error model while integrating with swc_common diagnostics.

Current Status

Script/module/program entry points are available.
Core statements and expression parsing are implemented.
import/export bootstrap parsing is included.
Structured for head parsing is available (classic, for..in, for..of).
JSX parsing supports qualified tag names and reports opening/closing tag mismatches.
TypeScript parsing builds structured type nodes (function/union/intersection/tuple/array/type-literal/type-args) for type aliases and as assertions.

Fixture Harness

swc_ecma_parser inputs are reused from crates/swc_ecma_parser/tests.
swc_es_parser snapshots are stored under crates/swc_es_parser/tests/fixtures.
Generate or refresh snapshots with:

UPDATE=1 cargo test -p swc_es_parser --test fixture_harness

API Sketch

use swc_common::{input::StringInput, FileName, SourceMap};
use swc_es_parser::{lexer::Lexer, Parser, Syntax};

let cm = SourceMap::default();
let fm = cm.new_source_file(FileName::Custom("a.js".into()).into(), "let a = 1;");
let lexer = Lexer::new(Syntax::default(), StringInput::from(&*fm), None);
let mut parser = Parser::new_from(lexer);
let parsed = parser.parse_program().unwrap();

Adding swc_es_parser library as a dependency

Adding `swc_es_parser` library as a dependency