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Block Library: Remove unused Babel optimization plugin #79162

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Merged
aduth merged 4 commits into from
Jun 15, 2026
Merged

Block Library: Remove unused Babel optimization plugin #79162

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05ff5c2
Block Library: Remove unused Babel optimization plugin
aduth Jun 12, 2026
87ae21d
Add PR link to CHANGELOG note
aduth Jun 12, 2026
198f303
Sync lockfile
aduth Jun 12, 2026
8bed9d6
Merge branch 'trunk' into remove/block-library-babel-plugin
aduth Jun 15, 2026
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1 change: 0 additions & 1 deletion package-lock.json
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4 changes: 4 additions & 0 deletions packages/block-library/CHANGELOG.md
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Expand Up @@ -2,6 +2,10 @@

## Unreleased

### Breaking Changes

- Removed the `@wordpress/block-library/babel-plugin` export. It was an internal transform for stripping experimental blocks from WordPress core builds and is no longer used by Gutenberg's build process ([#79162](https://github.com/WordPress/gutenberg/pull/79162)).

### Enhancements

- Icon Block: Insert with a default icon instead of an empty placeholder ([#79111](https://github.com/WordPress/gutenberg/pull/79111)).
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150 changes: 0 additions & 150 deletions packages/block-library/babel-plugin.cjs
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5 changes: 1 addition & 4 deletions packages/block-library/package.json
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Expand Up @@ -28,8 +28,7 @@
"build-module",
"build-style",
"build-types",
"*.md",
"babel-plugin.cjs"
"*.md"
],
"main": "build/index.cjs",
"module": "build-module/index.mjs",
Expand All @@ -38,7 +37,6 @@
"import": "./build-module/index.mjs",
"require": "./build/index.cjs"
},
"./babel-plugin": "./babel-plugin.cjs",
"./build-module/*": "./build-module/*",
"./build-style/*": "./build-style/*",
"./package.json": "./package.json"
Expand Down Expand Up @@ -144,7 +142,6 @@
"uuid": "^14.0.0"
},
"devDependencies": {
"@babel/core": "^7.25.7",
"@testing-library/dom": "^10.4.1",
"@testing-library/react": "^16.3.2",
"@testing-library/user-event": "^14.6.1",
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13 changes: 4 additions & 9 deletions packages/block-library/src/index.js
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Expand Up @@ -23,15 +23,10 @@ import HtmlRenderer from './utils/html-renderer';
/**
* Internal dependencies
*/
// When IS_GUTENBERG_PLUGIN is set to false, imports of experimental blocks
// are transformed by packages/block-library/src/index.js as follows:
// import * as experimentalBlock from './experimental-block'
// becomes
// const experimentalBlock = null;
// This enables webpack to eliminate the experimental blocks code from the
// production build to make the final bundle smaller.
//
// See https://github.com/WordPress/gutenberg/pull/40655 for more context.
// Experimental blocks are only registered in the Gutenberg plugin (see
// `__experimentalRegisterExperimentalCoreBlocks`). `registerCoreBlocks`
// filters them out via `isBlockMetadataExperimental`, so they are never
// available in WordPress core regardless of what ends up in the bundle.
import * as accordion from './accordion';
import * as accordionItem from './accordion-item';
import * as accordionHeading from './accordion-heading';
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67 changes: 0 additions & 67 deletions packages/block-library/test/babel-plugin.js
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17 changes: 0 additions & 17 deletions tools/build-scripts/babel.config.cjs
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Expand Up @@ -2,10 +2,6 @@
* Babel project-wide config for the monorepo. Owned by this workspace so all
* babel-related dependencies live here rather than at the repo root.
*/
const path = require( 'node:path' );

const ROOT_DIR = path.resolve( __dirname, '../..' );

module.exports = ( api ) => {
api.cache( true );

Expand All @@ -15,18 +11,5 @@ module.exports = ( api ) => {
require.resolve( '@emotion/babel-plugin' ),
require.resolve( 'babel-plugin-inline-json-import' ),
],
overrides: [
{
test: path.join(
ROOT_DIR,
'packages/block-library/src/index.js'
),
plugins: [
require.resolve(
'../../packages/block-library/babel-plugin.cjs'
),
],
},
],
};
};
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