sg

Ast-grep is a tool for code structural search, lint, and rewriting. More information: https://ast-grep.github.io/guide/introduction.html.

sg scan --interactive

sg run --pattern 'foo' --rewrite 'bar' --lang python

sg run --pattern 'useState<number>($A)' --rewrite 'useState($A)' --lang typescript

sg run --pattern 'Some($A)' --rewrite 'None' --json | jq '.[].replacement' | jless