swc_sourcemap 10.0.2

Forked from https://github.com/getsentry/rust-sourcemap
Documentation 
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use swc_sourcemap::{SourceMap, SourceMapBuilder};

#[test]
fn test_basic_sourcemap() {
    let input: &[_] = br#"{
        "version": 3,
        "sources": ["coolstuff.js"],
        "names": ["x","alert"],
        "mappings": "AAAA,GAAIA,GAAI,EACR,IAAIA,GAAK,EAAG,CACVC,MAAM"
    }"#;
    let sm = SourceMap::from_reader(input).unwrap();

    assert_eq!(
        sm.lookup_token(0, 0).unwrap().to_tuple(),
        ("coolstuff.js", 0, 0, None)
    );
    assert_eq!(
        sm.lookup_token(0, 3).unwrap().to_tuple(),
        ("coolstuff.js", 0, 4, Some("x"))
    );
    assert_eq!(
        sm.lookup_token(0, 24).unwrap().to_tuple(),
        ("coolstuff.js", 2, 8, None)
    );

    // Lines continue out to infinity
    assert_eq!(
        sm.lookup_token(0, 1000).unwrap().to_tuple(),
        ("coolstuff.js", 2, 8, None)
    );

    // Token can return prior lines.
    assert_eq!(
        sm.lookup_token(1000, 0).unwrap().to_tuple(),
        ("coolstuff.js", 2, 8, None)
    );
}

#[test]
fn test_basic_range() {
    let mut b = SourceMapBuilder::new(None);
    let id = b.add_source("input.js".into());
    b.add_raw(1, 0, 2, 2, Some(id), None, true);
    let sm = b.into_sourcemap();

    assert_eq!(
        sm.lookup_token(1, 0).unwrap().to_tuple(),
        ("input.js", 2, 2, None)
    );
    assert_eq!(
        sm.lookup_token(1, 8).unwrap().to_tuple(),
        ("input.js", 2, 10, None)
    );
    assert_eq!(
        sm.lookup_token(1, 12).unwrap().to_tuple(),
        ("input.js", 2, 14, None)
    );
}