[uasi]

They are considering switching from tsc to a TypeScript compiler written in Rust[0][1], and `deno fmt` subcommand already uses it internally.

[0] https://github.com/denoland/deno/issues/5432 [1] https://github.com/swc-project/swc

[yawaramin]

swc is not a TypeScript compiler, it doesn't do any typchecking. It just strips out types and outputs JavaScript.