Function toComment

__tests__/lib/infer/return.js:5–13

(fn, filename)

import parse from '../../../src/parsers/javascript';

function toComment(fn, filename) {
  return parse(
    {
      file: filename,
      source: fn instanceof Function ? '(' + fn.toString() + ')' : fn
    },
    {}
  )[0];
}

function evaluate(code, filename) {
  return inferReturn(toComment(code, filename));