fix: Add if guard

Signed-off-by: Akira Hayakawa <ruby.wktk@gmail.com>
update readme

Signed-off-by: Akira Hayakawa <ruby.wktk@gmail.com>
fix: prependDecl

Signed-off-by: Akira Hayakawa <ruby.wktk@gmail.com>
Add record points

Signed-off-by: Akira Hayakawa <ruby.wktk@gmail.com>
fix

Signed-off-by: Akira Hayakawa <ruby.wktk@gmail.com>
fix

Signed-off-by: Akira Hayakawa <ruby.wktk@gmail.com>