Deno: nested top level await dynamic imports broken

[cdaringe]

problem

nested dynamic imports aint workin!

error: Uncaught ReferenceError: x is not defined
b.x.uniq;
  ^
    at file:///Users/cdaringe/src/deno-nested-dynamic-import/a.ts:2:3

repro:

• clone https://github.com/cdaringe/deno-nested-dynamic-import
• deno run -A a.ts

here are the tiny files for minimum repro:

// a.ts
const b = await import("./b.ts");
b.x.uniq;

// b.ts - broken
const uniq = await import("https://deno.land/x/lodash/uniq.js").then((mod) =>
  mod.default
);
export const x = { uniq };

// b.ts - ok
export const x = { uniq: 'this is fine' };

meta

npx envinfo

  System:
    OS: macOS 10.15.3
    CPU: (4) x64 Intel(R) Core(TM) i5-7360U CPU @ 2.30GHz
    Memory: 497.97 MB / 8.00 GB
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 13.8.0 - ~/.nvm/versions/node/v13.8.0/bin/node
    Yarn: 1.12.3 - /usr/local/bin/yarn
    npm: 6.13.6 - ~/.nvm/versions/node/v13.8.0/bin/npm
  Managers:
    Cargo: 1.42.0 - ~/.cargo/bin/cargo
    Homebrew: 2.2.15 - /usr/local/bin/brew
    pip2: 9.0.1 - ~/.asdf/shims/pip2
    RubyGems: 3.0.3 - /usr/bin/gem
  Utilities:
    CMake: 3.13.0 - /usr/local/bin/cmake
    Make: 3.81 - /usr/bin/make
    GCC: 4.2.1 - /usr/bin/gcc
    Git: 2.19.0 - /usr/local/bin/git
    Clang: 1100.0.33.12 - /usr/bin/clang
    Subversion: 1.10.4 - /usr/bin/svn
    FFmpeg: 4.0.2 - /usr/local/bin/ffmpeg
  Servers:
    Apache: 2.4.41 - /usr/sbin/apachectl
  Virtualization:
    Docker: 19.03.8 - /usr/local/bin/docker
  SDKs:
    iOS SDK:
      Platforms: iOS 13.2, DriverKit 19.0, macOS 10.15, tvOS 13.2, watchOS 6.1
  IDEs:
    Nano: 2.0.6 - /usr/bin/nano
    VSCode: 1.45.0 - /usr/local/bin/code
    Vim: 8.1 - /usr/bin/vim
    Xcode: 11.2.1/11B500 - /usr/bin/xcodebuild
  Languages:
    Bash: 5.0.11 - /usr/local/bin/bash
    Go: 1.11.1 - /usr/local/bin/go
    Elixir: 1.9.1 - /usr/local/bin/elixir
    Java: javac 11 - /usr/bin/javac
    Perl: 5.18.4 - /usr/bin/perl
    PHP: 7.3.11 - /usr/bin/php
    Python: 2.7.14 - /Users/cdaringe/.asdf/shims/python
    Ruby: 2.6.3 - /usr/bin/ruby
    Rust: 1.21.1 - /Users/cdaringe/.cargo/bin/rustup
  Databases:
    SQLite: 3.28.0 - /usr/bin/sqlite3
  Browsers:
    Chrome: 81.0.4044.138
    Firefox: 73.0.1
    Safari: 13.0.5

:| Deno isn't listed ^ yet. deno 1.0.0-rc2

[kitsonk]

Need to look into how TLA works when exporting from a module according the v8 implementation and the spec.

For context, why are you doing what you are doing instead of:

import uniq from "https://deno.land/x/lodash/uniq.js";
export const x = { uniq };

[cdaringe]

For context, why are you doing what you are doing instead of:

for example purposes only 😄

[nuxodin]

That's something I stumbled upon, too.
Is that not possible according to the specifications?

[kitsonk]

I'm not sure yet. I think it is valid, but then I am not sure why it just doesn't work in Deno, as in theory we wouldn't be doing anything special here.

[kitsonk]

I know this came first, but #7649 is the same issue and there is work afoot to fix it but tied to that issue, so for clarity I am going to close this one.