Exports before declaration don't work

[duailibe]

Hi there!

I've recently started to migrate a relatively big project from Babel to Sucrase and hit a (not so much) blocker. We have a few files that reference export { foo } before the const foo declaration, which should be valid per spec and works with Babel and TypeScript.

Given the source

export { foo };
const foo = 1;

Sucrase will compile to:

exports.foo = foo;
const foo = 1;

And both Babel and TypeScript will compile to:

exports.foo = void 0;
const foo = 1;
exports.foo = foo;

(Sucrase link here)

This is kind of minor and I could just run a codemod on our codebase, but I figured this might be something worth fixing.

[duailibe]

What I did to fix in my project was moving all statements (export.foo = foo;) to the end of the compilation (in getSuffixCode).

If you think this is an acceptable fix, I'm happy to send a PR.