RFC: Add publish confirmation prompt

Author: ruyadorno

accepted/0028-publish-prompt.md

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+# Publish confirmation prompt
+
+## Summary
+
+Publishing a package should prompt a confirmation prompt, allowing users to validate their package info before uploading their package tarball.
+
+## Motivation
+
+Breaking the prompt into a two-step operation allows for a validation of contents prior to uploading the package.
+
+## Detailed Explanation and Rationale
+
+`npm publish` should ask for a confirmation prompt prior to uploading the package tarball.
+
+Currently "publish" has a very nice **unintended UX** for users with 2FA enabled, in which it stops the publish process in order to ask for the OTP code, allowing for a review of the file contents (and even cancelling the process altogether) prior to uploading the tarball file.
+
+A broader population of package authors can benefit from this UX if we formalize it. Allowing for review of contents and cancellation of package publishing.
+
+### Feedback from the discussion around this RFC
+
+- Should be implemented behind an opt-in flag for npm@7
+- Non-TTY environments should skip the prompt.
+
+## Alternatives
+
+1. Not implement it, keep the current behavior.
+
+## Implementation
+
+Prompts the user for confirmation when using the opt-in flag:
+
+```sh
+$ npm publish --publish-confirmation
+
+npm notice
+npm notice 📦  [email protected]
+npm notice === Tarball Contents ===
+npm notice 183B  bin/disparity
+npm notice 2.1kB disparity-cli.js
+npm notice 4.3kB disparity.js
+npm notice 999B  package.json
+npm notice 875B  CHANGELOG.md
+npm notice 1.1kB LICENSE.md
+npm notice 3.7kB README.md
+npm notice === Tarball Details ===
+npm notice name:          disparity
+npm notice version:       3.0.0
+npm notice filename:      disparity-3.0.0.tgz
+npm notice package size:  5.2 kB
+npm notice unpacked size: 13.3 kB
+npm notice shasum:        4344ee202484ab134227913a3af6f4a0ae5f0a59
+npm notice integrity:     sha512-NAItmPQyt6dya[...]m5N3kfPPJYj0w==
+npm notice total files:   7
+npm notice
+
+This operation will publish your package to the npm registry.
+Do you wish to proceed? [y/N]
+```
+
+The user can also provide a `--yes` option that can skip the prompt and keep current behavior:
+
+```
+$ npm publish --publish-confirmation --yes
+```
+
+## Prior Art
+
+Currently `npm publish` will automatically publish the tarball to the registry without any confirmation prompt in case the user does not have OTP enabled.