import type { ITokenStream } from "@syuilo/aiscript/parser/streams/token-stream.js";
import type * as Ast from "@syuilo/aiscript/node.js";
import { ParserError } from "../../errors/index.js";
/**
 * ```abnf
 * Params = "(" [IDENT [":" Type] *(SEP IDENT [":" Type])] ")"
 * ```
 */
export declare function parseParams(s: ITokenStream, e: ParserError[]): {
    name: string;
    argType?: Ast.TypeSource;
}[] | null;
/**
 * ```abnf
 * Block = "{" *Statement "}"
 * ```
 */
export declare function parseBlock(s: ITokenStream, e: ParserError[]): (Ast.Statement | Ast.Expression)[] | null;
export declare function parseType(s: ITokenStream, e: ParserError[]): Ast.TypeSource | null;