Shared utility functions used across block support files.

Source: wp-includes/block-supports/utils.php
Since: 6.0.0

Functions

wp_should_skip_block_supports_serialization()

function wp_should_skip_block_supports_serialization( WP_Block_Type $block_type, string $feature_set, ?string $feature = null ): bool

Since: 6.0.0
Access: private

Checks whether serialization of a block’s supported properties should be skipped. This is the mechanism by which blocks opt out of server-side style/class generation for specific features.

Logic:

1. Returns false if $block_type is not an object or $feature_set is falsy
2. Reads $block_type->supports[$feature_set]['__experimentalSkipSerialization']
3. If the value is an array: returns true if $feature is in the array
4. If the value is a boolean: returns that boolean directly

Usage pattern in block.json:

{
  "supports": {
    "color": {
      "text": true,
      "background": true,
      "__experimentalSkipSerialization": true
    }
  }
}

Or skip only specific features:

{
  "supports": {
    "color": {
      "text": true,
      "background": true,
      "__experimentalSkipSerialization": ["text"]
    }
  }
}

This function is called by nearly every block support’s apply and render functions.