async generators/iterators not supported

[fijiwebdesign]

Using latest version. ^0.17.00

Will async generators and iterators be supported?

async function* foo() {
  yield 1;
  yield 2;
}

(async function() {
  for await (const num of foo()) {
    console.log(num);
    // Expected output: 1

    break; // Closes iterator, triggers return
  }
})();

Gives error:

✘ [ERROR] Transforming async generator functions to the configured target environment ("es2015") is not supported yet

    src/test.ts:33:4:
      33 │     async function* foo() {
         ╵     ~~~~~

✘ [ERROR] Transforming for-await loops to the configured target environment ("es2015") is not supported yet

    src/test.ts:39:10:
      39 │       for await (const num of foo()) {
         ╵           ~~~~~

[evanw]

Closing as a duplicate of #2780. This is a known issue.