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Template part block: avoid parsing ALL patterns on mount #57856

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merged 1 commit into from
Jan 18, 2024

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@ellatrix ellatrix commented Jan 15, 2024

What?

Currently the site editor seems to trigger parsing all the patterns on load. This is happening because the template part blocks is selecting getPatternsByBlockTypes in the edit function.

Observations:

  • It's needed just to check the length... so a lot is happening just for a check.
  • This is for a menu item that's not even rendered unless you open the options...
  • It seems unexpected that getPatternsByBlockTypes is parsing ALL the patterns. Ideally one first gets the subset, then parse the patterns.

The solution I went for here is to avoid calling the expensive selector until that menu item is rendered, since this also reduces the number of subscriptions.

Why?

This is on load

Screenshot 2024-01-15 at 21 47 37

This is the template library (grid). All the red stuff is gone now.

image

How?

Testing Instructions

Testing Instructions for Keyboard

Screenshots or screencast

@ellatrix ellatrix added the [Type] Performance Related to performance efforts label Jan 15, 2024
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github-actions bot commented Jan 15, 2024

Size Change: +57 B (0%)

Total Size: 1.7 MB

Filename Size Change
build/block-library/index.min.js 215 kB +57 B (0%)
ℹ️ View Unchanged
Filename Size
build/a11y/index.min.js 964 B
build/annotations/index.min.js 2.71 kB
build/api-fetch/index.min.js 2.33 kB
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compressed-size-action

@ellatrix ellatrix changed the title Site editor: avoid parsing ALL patterns on load Template part block: avoid parsing ALL patterns on mount Jan 17, 2024
@ellatrix ellatrix marked this pull request as ready for review January 18, 2024 13:32
@ellatrix ellatrix force-pushed the try/avoid-patters-parsing-on-load branch from 97e9d37 to f6ddae1 Compare January 18, 2024 13:32
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That makes sense to me. Is this noticeable in the performance metrics, how can we ensure that it doesn't happen again?

@ellatrix ellatrix merged commit 0cce3a7 into trunk Jan 18, 2024
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@ellatrix ellatrix deleted the try/avoid-patters-parsing-on-load branch January 18, 2024 18:13
@github-actions github-actions bot added this to the Gutenberg 17.6 milestone Jan 18, 2024
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