Piece	Why it is here
`RichTextExtension`	Headings and quotes. Every pattern needs it.
`ListExtension`	Bulleted and numbered lists. Without it the list shortcuts do nothing useful.
`CheckListExtension`	Check lists.
`LinkExtension`	Links created with `[text](url)`.
`CodeExtension`	Fenced code blocks created with three backticks.
`HorizontalRuleExtension`	Dividers created with `---`.
`registerMarkdownShortcuts`	Called in `register`. It listens for typing and applies the transformers. Remove it and nothing converts.
`TRANSFORMERS`	The list of syntaxes to recognize. Remove an entry to disable that syntax.

Each transformer needs the extension that provides its node. If you remove an extension, remove the matching transformer too.

Shortcuts

Type the syntax, then a space where one is shown.

Inline formats convert when you type the closing mark and the character after it.

Choose the syntaxes

TRANSFORMERS is a plain array. Keep only what you need.

const TRANSFORMERS: Transformer[] = [
  ...ELEMENT_TRANSFORMERS,
  ...TEXT_FORMAT_TRANSFORMERS,
];

Drop HR, CHECK_LIST or the multiline and text match groups together with their extensions.

The full editor also registers table, image and emoji transformers. They are not part of this pattern, see Full editor.