import { ValidationContext, SDLValidationContext } from "../ValidationContext";
import { ASTVisitor } from "../../language/visitor";

export function unknownArgMessage(
    argName: string,
    fieldName: string,
    typeName: string,
    suggestedArgs: Array<string>
): string;

export function unknownDirectiveArgMessage(
    argName: string,
    directiveName: string,
    suggestedArgs: Array<string>
): string;

/**
 * Known argument names
 *
 * A GraphQL field is only valid if all supplied arguments are defined by
 * that field.
 */
export function KnownArgumentNames(context: ValidationContext): ASTVisitor;

// @internal
export function KnownArgumentNamesOnDirectives(context: ValidationContext | SDLValidationContext): ASTVisitor;