Export babel tooling in @babel/standalone and @babel/core

[ajihyf]

Feature Request

• I would like to work on this feature!

Is your feature request related to a problem? Please describe.
I am implementing a tool to transform an expression using parser.parseExpression, traverse, types.X and generate(exp). This tool should be directly used on the web however @babel/standalone doesn't export these toolings.

Describe the solution you'd like
Directly export babel tooling in @babel/standalone(and @babel/core, since @babel/standalone just imports from it).

Describe alternatives you've considered
I tried to use babel.transform from @babel/standalone. But an expression will be treated as a statement by babel or trigger a parsing error(like { a, b: 3, ...obj }).

[babel-bot]

Hey @ajihyf! We really appreciate you taking the time to report an issue. The collaborators on this project attempt to help as many people as possible, but we're a limited number of volunteers, so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack community that typically always has someone willing to help. You can sign-up here for an invite."

[nicolo-ribaudo]

You could wrap it in parentheses to disambiguate between a block statement and an object expression:

function transformExpression(code) {
  return babel.transformSync("(" + code + ")");
}

[ajihyf]

@nicolo-ribaudo The wrapped statement generates code as a statement, eg. (3) -> 3; and ({ a, b: 3, ...obj }) -> ({ a, b: 3, ...obj });. I've tried to use string manipulation functions to remove these punctuations but seems tricky and error prune.