import { type DataflowProcessorInformation } from '../../../../../processor';
import { type DataflowInformation } from '../../../../../info';
import type { RSymbol } from '../../../../../../r-bridge/lang-4.x/ast/model/nodes/r-symbol';
import type { ParentInformation } from '../../../../../../r-bridge/lang-4.x/ast/model/processing/decorate';
import type { PotentiallyEmptyRArgument } from '../../../../../../r-bridge/lang-4.x/ast/model/nodes/r-function-call';
import type { NodeId } from '../../../../../../r-bridge/lang-4.x/ast/model/processing/node-id';
/** `if(<cond>) <then> else <else>` built-in function configuration, make sure to not reuse indices */
export interface IfThenElseConfig {
    args?: {
        /** the expression to treat as condition, defaults to index 0 */
        cond: string;
        /** argument to treat as yes/'then' case, defaults to index 1 */
        yes: string;
        /** argument to treat as no/'else' case, defaults to index 2 */
        no: string;
    };
}
/**
 * Processes an if-then-else built-in function call.
 * For example, `if(cond) thenExpr else elseExpr` and `if(cond) thenExpr`.
 * The arguments will be either `[cond, thenExpr]` or `[cond, thenExpr, elseExpr]`.
 */
export declare function processIfThenElse<OtherInfo>(name: RSymbol<OtherInfo & ParentInformation>, args: readonly PotentiallyEmptyRArgument<OtherInfo & ParentInformation>[], rootId: NodeId, data: DataflowProcessorInformation<OtherInfo & ParentInformation>, config?: IfThenElseConfig): DataflowInformation;