yield in an async generator does not await its operand #5317

yield expr inside an async function* resolves the iterator result with expr directly instead of awaiting it first.

JerryScript revision

v3.0.0 and master (b7069350)

Build platform

macOS 26.3 (Darwin 25.3.0 arm64)

Build steps

tools/build.py --clean --debug

Build log

N/A

Test case

async function* ag() {
  yield Promise.resolve(8);
}

ag().next().then(r => {
  print(typeof r.value, r.value, r.done);
});

Execution platform

Same as build platform.

Execution steps

build/bin/jerry testcase.js

Output

object [object Promise] false

Backtrace

N/A

Expected behavior

number 8 false

Credit: https://ucsbplse.github.io/