import { KeyBinding } from '@codemirror/view';
import { Extension, StateCommand, EditorState, Transaction } from '@codemirror/state';

/**
Configures bracket closing behavior for a syntax (via
[language data](https://codemirror.net/6/docs/ref/#state.EditorState.languageDataAt)) using the `"closeBrackets"`
identifier.
*/
interface CloseBracketConfig {
    /**
    The opening brackets to close. Defaults to `["(", "[", "{", "'",
    '"']`. Brackets may be single characters or a triple of quotes
    (as in `"''''"`).
    */
    brackets?: string[];
    /**
    Characters in front of which newly opened brackets are
    automatically closed. Closing always happens in front of
    whitespace. Defaults to `")]}:;>"`.
    */
    before?: string;
}
/**
Extension to enable bracket-closing behavior. When a closeable
bracket is typed, its closing bracket is immediately inserted
after the cursor. When closing a bracket directly in front of a
closing bracket inserted by the extension, the cursor moves over
that bracket.
*/
declare function closeBrackets(): Extension;
/**
Command that implements deleting a pair of matching brackets when
the cursor is between them.
*/
declare const deleteBracketPair: StateCommand;
/**
Close-brackets related key bindings. Binds Backspace to
[`deleteBracketPair`](https://codemirror.net/6/docs/ref/#closebrackets.deleteBracketPair).
*/
declare const closeBracketsKeymap: readonly KeyBinding[];
/**
Implements the extension's behavior on text insertion. If the
given string counts as a bracket in the language around the
selection, and replacing the selection with it requires custom
behavior (inserting a closing version or skipping past a
previously-closed bracket), this function returns a transaction
representing that custom behavior. (You only need this if you want
to programmatically insert brackets—the
[`closeBrackets`](https://codemirror.net/6/docs/ref/#closebrackets.closeBrackets) extension will
take care of running this for user input.)
*/
declare function insertBracket(state: EditorState, bracket: string): Transaction | null;

export { CloseBracketConfig, closeBrackets, closeBracketsKeymap, deleteBracketPair, insertBracket };