import { NDArray, DataValue, DimensionName, Coordinates, Attributes } from '../types.js';
import type { DataBlock } from '../core/data-block.js';
export interface ArrayWhereOperand {
    kind: 'array';
    block: DataBlock;
    dims: DimensionName[];
    coords: Coordinates;
    attrs?: Attributes;
    name?: string;
}
export interface ScalarWhereOperand {
    kind: 'scalar';
    value: DataValue;
    attrs?: Attributes;
    name?: string;
}
export type WhereOperand = ArrayWhereOperand | ScalarWhereOperand;
export interface WhereOptions {
    keepAttrs?: boolean | 'x' | 'y' | ((attrs: {
        cond?: Attributes;
        x?: Attributes;
        y?: Attributes;
    }) => Attributes | undefined);
    preferNameFrom?: 'x' | 'y' | 'cond';
}
export interface BinaryOpOptions {
    keepAttrs?: boolean | 'left' | 'right' | ((attrs: {
        left?: Attributes;
        right?: Attributes;
    }) => Attributes | undefined);
    preferNameFrom?: 'left' | 'right';
}
export interface WhereResult {
    data: NDArray;
    dims: DimensionName[];
    coords: Coordinates;
    attrs?: Attributes;
    name?: string;
}
export declare function isArrayOperand(operand: WhereOperand): operand is ArrayWhereOperand;
export declare function computeWhere(cond: WhereOperand, x: WhereOperand, y: WhereOperand, options?: WhereOptions): WhereResult;
export declare function computeBinaryOp(left: WhereOperand, right: WhereOperand, operator: (leftValue: DataValue, rightValue: DataValue) => DataValue, options?: BinaryOpOptions): WhereResult;
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