import { Instruction } from './instructions';
import { Opcode } from './opcodes';
import { TemplateError } from './errors';
export declare abstract class Sink {
    /**
     * Accept an instruction.
     */
    abstract accept(inst: Instruction | Opcode): void;
    /**
     * Run the completion checks.
     */
    abstract complete(): void;
    /**
     * Push an error to the sink.
     */
    abstract error(err: TemplateError): void;
}