TypeScript/tests/cases/conformance/async/es2017/functionDeclarations/asyncFunctionDeclaration7_es2017.ts

// @target: es2017
// @noEmitHelpers: true
async function bar(): Promise<void> {
  // 'await' here is an identifier, and not a yield expression.
  async function foo(a = await): Promise<void> {
  }
}