Removal of comments in version 1.43.3

[AnnaMatlapudi]

Does anyone know what is happening here with new version (1.43.3) when a function code is displayed with toString(), comments are removed. Whereas until previous version (1.42.2) comments are retained (which is the case with node(js) runtime also).

Is there a change in default configuration causing this? if so, what are my options to switch back to behavior of keeping comments? Please help

Test Code:

const utils = {
  fx1: () =>
    // This is addition
    123 + 567,
  fx2: () =>
    // This is subtraction
    /* one more line of comment */
    123 + 567,
};

const fn = utils["fx2"];
console.log(fn.toString());

Output from deno 1.43.3 (release, x86_64-unknown-linux-gnu) , v8 12.4.254.13 and typescript 5.4.5

()=>123 + 56

Output from deno 1.42.2 (release, x86_64-unknown-linux-gnu) , v8 12.3.219.9 and typescript 5.4.3

()=>// This is subtraction
    /* one more line of comment */ 123 + 567

Output from node v21.5.0

() =>
    // This is subtraction
    /* one more line of comment */
    123 + 567

[bartlomieju]

It appears this is only happening in the REPL or if you use TypeScript. IIRC @dsherret did a change that removes all comments during transpilation some time ago, but I'm not 100% sure.

[dsherret]

Yeah, I think we need to revert that.

[dsherret]

I opened #23815