unicode-id-start is used at run time in 183 crates (of which 14 optionally). It is a direct run-time dependency in 4 crates. It's used only as a dev dependency in 8 crates.

Depender (with downloads and own rev deps) unicode-id-start version
424K 23 sourcemap ^1
324K 100 swc_ecma_ast ^1.1.2
10K 9 oxc_syntax ^1.1.2
3 enderpy_python_parser ^1.0.3