import { ProjectionPathEntries } from "../../types/projection-paths";
import { IGroqBuilder } from "../../groq-builder";
export declare namespace CoalesceExpressions {
    /**
     * Represents the array of args that can be
     * passed to the `coalesce` method
     */
    export type CoalesceArgs<TResult> = ArrayMin2<CoalesceArg<TResult>>;
    type ArrayMin2<T> = [T, T, ...Array<T>];
    type CoalesceArg<TResult> = keyof ProjectionPathEntries<TResult> | IGroqBuilder;
    /**
     * Extracts the result type from the `coalesce` method
     */
    export type CoalesceResult<TResult, TExpressions extends CoalesceArgs<TResult>> = CoalesceValues<TResult, TExpressions> extends [
        ...Array<infer TNullableValues>,
        infer TFinalValue
    ] ? NonNullable<TNullableValues> | TFinalValue : never;
    type CoalesceValues<TResult, TExpressions extends CoalesceArgs<TResult>, _PathEntries = ProjectionPathEntries<TResult>> = {
        [Index in keyof TExpressions]: CoalesceExpressionValue<_PathEntries, TExpressions[Index]>;
    };
    type CoalesceExpressionValue<PathEntries, TExpression> = TExpression extends IGroqBuilder<infer ExpressionResult> ? ExpressionResult : TExpression extends keyof PathEntries ? PathEntries[TExpression] : never;
    export {};
}