fix(types): explicit reexport & strict equality. <!-- Thank you for contributing to Pyodide! All improvements are welcome,
     so don't be afraid to make a PR. -->

### Description

<!-- Please explain what your PR is about:
     - reasoning for the change
     - some details of updated code
     - any noteworthy choices to be aware of
	Please refer to any related issues by #<issue_id> -->

Enabling two more strictness flags.

package:
  name: distlib
  version: 0.3.4
source:
  sha256: 6564fe0a8f51e734df6333d08b8b94d4ea8ee6b99b5ed50613f731fd4089f34b
  url: https://files.pythonhosted.org/packages/ac/a3/8ee4f54d5f12e16eeeda6b7df3dfdbda24e6cc572c86ff959a4ce110391b/distlib-0.3.4-py2.py3-none-any.whl
build:
  post: |
    find build/distlib-0.3.4/dist -name '*.exe' -delete

test:
  imports:
    - distlib

package:
  name: distlib
  version: 0.3.4
source:
  sha256: 6564fe0a8f51e734df6333d08b8b94d4ea8ee6b99b5ed50613f731fd4089f34b
  url: https://files.pythonhosted.org/packages/ac/a3/8ee4f54d5f12e16eeeda6b7df3dfdbda24e6cc572c86ff959a4ce110391b/distlib-0.3.4-py2.py3-none-any.whl
build:
  post: |
    find build/distlib-0.3.4/dist -name '*.exe' -delete

test:
  imports:
    - distlib
