export type DocFragment = readonly DocLine[];
export type DocLine = readonly DocNode[];
export type DocNode = TextNode | VoidNode;
export type Position = readonly [line: number, offset: number];
export type PositionRange = readonly [start: Position, end: Position];
export type SelectionSnapshot = readonly [anchor: Position, focus: Position];
export type TextNode = Readonly<{
    text: string;
}>;
export type VoidNode = Readonly<{
    data: Record<string, unknown>;
}>;
export type Writeable<T> = {
    -readonly [key in keyof T]: T[key];
};