index.js and index.d.ts files are getting ignored when building a tarball

[teidesu]

mcve

deno.json

{
  "name": "@foo/bar",
  "version": "1.0.0",
  "exports": {
    ".": "./index.js"
  }
}

index.js

export const foo = 123

index.d.ts

export const foo: number

expected result

the tarball gets built and published correctly

actual result

the --dry-run output doesn't include these files:

Simulating publish of @foo/[email protected] with files:
   file:///path/to/LICENSE (1.04KB)
   file:///path/to/deno.json (88B)
Warning Aborting due to --dry-run

and actual publish errors out due to index.js not being present (linefeed for readability):

Failed to publish @foo/bar at 1.0.0: invalid 'exports' field in config file '/deno.json': 
  export '.' references entrypoint '/index.js' which does not exist