import type { Session } from '../../../session/session.ts';
import type { SessionView } from '../../../../ops/types.ts';
import type { BuiltinCall, Result } from '../types.ts';
/**
 * `(( ))` as a builtin: every operand is one expression, the writes land
 * in order, and the status is 1 when the last expression evaluated to 0.
 * No operand is `expression expected`, exit 1; a malformed one aborts
 * the builtin at that word.
 */
export declare function handleLet(args: string[], session: Session, state?: SessionView | null): Promise<Result>;
/** The `let` arm. */
export declare function letBuiltin(call: BuiltinCall): Promise<Result>;
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