Verify if a package is published when npm says "OK"

[pomek]

Provide a description of the task

The latest nightly build results in weird cases.

The packages listed below haven't been published despite a job log containing nothing about them. In other words, npm said OK when we called npm publish even if packages were unavailable.

[
  '@ckeditor/ckeditor5-utils',
  '@ckeditor/ckeditor5-ui',
  '@ckeditor/ckeditor5-typing',
  '@ckeditor/ckeditor5-table',
  '@ckeditor/ckeditor5-style',
  '@ckeditor/ckeditor5-special-characters',
  '@ckeditor/ckeditor5-mention',
  '@ckeditor/ckeditor5-link',
  '@ckeditor/ckeditor5-font',
  '@ckeditor/ckeditor5-editor-decoupled',
  '@ckeditor/ckeditor5-editor-classic',
  '@ckeditor/ckeditor5-code-block',
  '@ckeditor/ckeditor5-build-multi-root',
  '@ckeditor/ckeditor5-slash-command',
  '@ckeditor/ckeditor5-paste-from-office-enhanced',
  '@ckeditor/ckeditor5-pagination',
  '@ckeditor/ckeditor5-merge-fields',
  '@ckeditor/ckeditor5-import-word',
  '@ckeditor/ckeditor5-format-painter',
  '@ckeditor/ckeditor5-comments'
]

Also, the same log contains many (18x) E409 errors handled correctly this time.

Example: @ckeditor/ckeditor5-editor-multi-root

It looks like we cannot trust any response npm sends.

Let's verify an upload status manually, as we do when an error occurs. This line should be removed:

https://github.com/ckeditor/ckeditor5-dev/blob/6e47a6d46ca1511ac2eb56bf05c7692412971711/packages/ckeditor5-dev-release-tools/lib/utils/publishpackageonnpmcallback.js#L25

Related issues

• Release tools: prevent "You cannot publish over the previously published versions" crashing the process #17120
• npm publish returns "ok" but does not actually publish anything npm/npm#6308
• npm publish succeeded but latest version is not in the registry npm/npm#20851 (comment)