WordPress File wp-includes/blocks.php

register_block_script_handle()

Finds a script handle for the selected block metadata field. It detects when a path to file was provided and finds a corresponding asset…

register_block_style_handle()

Finds a style handle for the block metadata field. It detects when a path to file was provided and registers the style under automatically…

register_block_type()

Registers a block type. The recommended way is to register a block type using the metadata stored in the block.json file.

serialize_block()

Returns the content of a block, including comment delimiters, serializing all attributes from the given parsed block.