Subscribers: Add via field to subscribers table, with sorting and filtering

[allilevine]

Related to https://github.com/Automattic/loop/issues/376

Proposed Changes

• Change Subscription Type field to Type.
• Add Via field with Email and Reader values.

• Add sorting and filtering on Via.

Type filter	Via filter

Why are these changes being made?

• Requested feature: pe7F0s-2oe-p2#comment-3330

Testing Instructions

• Go to /subscribers/{site URL} with a site that has both email and non-email subscribers (you can unsubscribe from emails in /read/subscriptions).
• Check that there's a Via column that displays either "Email" or "Reader."
• Sort by Via ascending and descending and check the results.
• Filter by Via, Email and Reader and check the results.

Note that filtering by Type and Via simultaneously isn't currently possible. Follow-up: https://github.com/Automattic/loop/issues/391

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
  • For UI changes, have we tested the change in various languages (for example, ES, PT, FR, or DE)? The length of text and words vary significantly between languages.
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-131683

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-131683&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-131683&env=a8c-for-agencies

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• blaze-dashboard
• command-palette-wp-admin
• help-center
• notifications
• odyssey-stats
• whats-new
• wpcom-block-editor

To test WordPress.com changes, run install-plugin.sh $pluginSlug add/via-column-to-subscriber-dataviews on your sandbox.

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

App Entrypoints (~25 bytes added 📈 [gzipped])

name                 parsed_size           gzip_size
entry-subscriptions       +104 B  (+0.0%)      +25 B  (+0.0%)

Common code that is always downloaded and parsed every time the app is loaded, no matter which route is used.

Sections (~140 bytes added 📈 [gzipped])

name         parsed_size           gzip_size
subscribers       +538 B  (+0.0%)     +113 B  (+0.0%)
reader            +104 B  (+0.0%)      +27 B  (+0.0%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Async-loaded Components (~29 bytes added 📈 [gzipped])

name                                                 parsed_size           gzip_size
async-load-calypso-my-sites-stats-pages-subscribers       +104 B  (+0.1%)      +29 B  (+0.1%)

React components that are loaded lazily, when a certain part of UI is displayed for the first time.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[a8ci18n]

This Pull Request is now available for translation here: https://translate.wordpress.com/deliverables/17220077

Thank you @allilevine for including a screenshot in the description! This is really helpful for our translators.

[dhanson-wp]

It would be helpful in these filtered views for the total count of Email subscribers and Followers to be displayed for each type. As a publisher, you would expect to see numbers for:

• Total Subscribers
• Email Subscribers
• WPCOM Followers

[allilevine]

It would be helpful in these filtered views for the total count of Email subscribers and Followers to be displayed for each type. As a publisher, you would expect to see numbers for:

• Total Subscribers
• Email Subscribers
• WPCOM Followers

@dhanson-wp Thanks for that feedback! I shared a video of what that could look like here: p1738348154220899/1738166831.661159-slack-C083ZPVVDTK

I would make this change in a follow-up PR since we're aligning on terminology, and would need to get translations.