pub fn builtin_meta(key: &str) -> Option<(&'static str, u32)>Expand description
The name and length a builtin function reports, from the generated
intrinsic table (crate::arity::BUILTIN_ARITY). None for a key the table
does not cover — every non-function namespace (Math, require('fs')),
and the core-module functions, whose arity is not specified anywhere.