Function getDocument

packages/language/src/utils.ts:704–711

(node: AstNode)

 * @throws an error if the node is not contained in a document.
 */
export function getDocument<T extends AstNode = AstNode>(node: AstNode): LangiumDocument<T> {
    const rootNode = findRootNode(node);
    const result = rootNode.$document;
    if (!result) {
        throw new Error('AST node has no document.');
    }
    return result as LangiumDocument<T>;
}

/**
 * Gets the list of plugin documents from the given model.