import type { Expr, TemporalFieldType, TimestampUnit, CastType, TypecastExpr, TimeDeltaExpr, ExpressionValueType } from '../../model/malloy_types';
import type { TimeResult } from './types/time-result';
export declare function timeOffset(timeType: TemporalFieldType, from: Expr, op: '+' | '-', n: Expr, timeframe: TimestampUnit): TimeDeltaExpr;
export declare function castTo(castType: CastType | {
    raw: string;
}, from: Expr, fromType: ExpressionValueType, safe?: boolean): TypecastExpr;
export declare function resolution(timeframe: string): TemporalFieldType;
export declare function mkTimeResult(t: TimeResult, tt: TimestampUnit | undefined): TimeResult;