hello
before error
world
Error: error
    at foo ([WILDCARD]tests/async_error.ts:4:9)
    at eval ([WILDCARD]tests/async_error.ts:7:1)
    at Runner.eval [as _globalEval] (<anonymous>)
    at Runner._gatherDependencies ([WILDCARD]/js/runner.ts:[WILDCARD])
    at Runner.run ([WILDCARD]/js/runner.ts:[WILDCARD])
    at denoMain ([WILDCARD]/js/main.ts:[WILDCARD])
    at deno_main.js:1:1