How to add comment in a visitor

[SyMind]

I'm writing a project based on SWC. I want to add some comments in a visitor when transforming AST, like below:

input:

import Svg from 'react-native-svg';
<svg><g/><div/></svg>;

output:

import Svg, { G } from 'react-native-svg';
/* SVGR has dropped some elements not supported by react-native-svg: div */
<Svg><G/></Svg>;

[kwonoj]

did add_leading_comments not work?

[SyMind]

add_leading_comments seems like private function. I cannot call it in my Visitor. Can you give me some examples?

[kwonoj]

it is public trait. https://github.com/swc-project/swc/blob/e9f3371c5ff029555ead23f10039b02830e86c64/crates/swc_common/src/comments.rs#LL33C1-L33C1