text: // @flow strict
  
  import didYouMean from '../../jsutils/didYouMean';
  import suggestionList from '../../jsutils/suggestionList';
  
  import { GraphQLError } from '../../error/GraphQLError';
  
  import { Kind } from '../../language/kinds';
  import { type ASTVisitor } from '../../language/visitor';
  
  import { specifiedDirectives } from '../../type/directives';
  
  import {
    type ValidationContext,
    type SDLValidationContext,
  } from '../ValidationContext';
  
  /**
   * Known argument names
   *
   * A GraphQL field is only valid if all supplied arguments are defined by
   * that field.
   */
  export function KnownArgumentNamesRule(context: ValidationContext): ASTVisitor {
    return {
      ...KnownArgumentNamesOnDirectivesRule(context),
      Argument(argNode) {
        const argDef = context.getArgument();
        const fieldDef = context.getFieldDef();
        const parentType = context.getParentType();
  
        if (!argDef && fieldDef && parentType) {
          const argName = argNode.name.value;
          const knownArgsNames = fieldDef.args.map((arg) => arg.name);
          const suggestions = suggestionList(argName, knownArgsNames);
          context.reportError(
            new GraphQLError(
              `Unknown argument "${argName}" on field "${parentType.name}.${fieldDef.name}".` +
                didYouMean(suggestions),
              argNode,
            ),
          );
        }
      },
    };
  }
  
  /**
   * @internal
   */
  export function KnownArgumentNamesOnDirectivesRule(
    context: ValidationContext | SDLValidationContext,
  ): ASTVisitor {
    const directiveArgs = Object.create(null);
  
    const schema = context.getSchema();
    const definedDirectives = schema
      ? schema.getDirectives()
      : specifiedDirectives;
    for (const directive of definedDirectives) {
      directiveArgs[directive.name] = directive.args.map((arg) => arg.name);
    }
  
    const astDefinitions = context.getDocument().definitions;
    for (const def of astDefinitions) {
      if (def.kind === Kind.DIRECTIVE_DEFINITION) {
        // istanbul ignore next (See: 'https://github.com/graphql/graphql-js/issues/2203')
        const argsNodes = def.arguments ?? [];
  
        directiveArgs[def.name.value] = argsNodes.map((arg) => arg.name.value);
      }
    }
  
    return {
      Directive(directiveNode) {
        const directiveName = directiveNode.name.value;
        const knownArgs = directiveArgs[directiveName];
  
        if (directiveNode.arguments && knownArgs) {
          for (const argNode of directiveNode.arguments) {
            const argName = argNode.name.value;
            if (knownArgs.indexOf(argName) === -1) {
              const suggestions = suggestionList(argName, knownArgs);
              context.reportError(
                new GraphQLError(
                  `Unknown argument "${argName}" on directive "@${directiveName}".` +
                    didYouMean(suggestions),
                  argNode,
                ),
              );
            }
          }
        }
  
        return false;
      },
    };
  }
  