Deno.open createNew not working

[tiloio]

When I run await Deno.open('./test-file', { createNew: true, write: true }); I will get the following error when I use the deno shims with the https://github.com/denoland/dnt build esm output.

node_modules/@deno/shim-deno/dist/deno/internal/fs_flags.js:81
    throw new errors.BadResource("EINVAL: Invalid fs flags.");
          ^

BadResource [Error]: EINVAL: Invalid fs flags.

I created an example to show the error: https://github.com/tiloio/deno-open-create-new-shim-bug

There is no way to have not an error if I set createNew to true:
https://github.com/denoland/node_deno_shims/blob/430ad2bfade33c532a9a078fc4e79a48831ce5fe/packages/shim-deno/src/deno/internal/fs_flags.ts#L35

[tiloio]

According to the node and deno docs I would say the negation here is wrong:
https://github.com/denoland/node_deno_shims/blob/430ad2bfade33c532a9a078fc4e79a48831ce5fe/packages/shim-deno/src/deno/internal/fs_flags.ts#L67

Node docs

Constant	Description
O_EXCL	Flag indicating that opening a file should fail if the O_CREAT flag is set and the file already exists.
O_NOCTTY	Flag indicating that if path identifies a terminal device, opening the path shall not cause that terminal to become the controlling terminal for the process (if the process does not already have one).

Deno docs:

   /** Defaults to `false`. If set to `true`, no file, directory, or symlink is
     * allowed to exist at the target location. Requires write or append
     * access to be used. When createNew is set to `true`, create and truncate
     * are ignored. */
    createNew?: boolean;

[tiloio]

Created PR #72 to address this issue.