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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/graphql/validation/rules

Просмотр файла: ScalarLeafsRule.mjs

import { inspect } from '../../jsutils/inspect.mjs';
import { GraphQLError } from '../../error/GraphQLError.mjs';
import { getNamedType, isLeafType } from '../../type/definition.mjs';

/**
 * Scalar leafs
 *
 * A GraphQL document is valid only if all leaf fields (fields without
 * sub selections) are of scalar or enum types.
 */
export function ScalarLeafsRule(context) {
  return {
    Field(node) {
      const type = context.getType();
      const selectionSet = node.selectionSet;

      if (type) {
        if (isLeafType(getNamedType(type))) {
          if (selectionSet) {
            const fieldName = node.name.value;
            const typeStr = inspect(type);
            context.reportError(
              new GraphQLError(
                `Field "${fieldName}" must not have a selection since type "${typeStr}" has no subfields.`,
                {
                  nodes: selectionSet,
                },
              ),
            );
          }
        } else if (!selectionSet) {
          const fieldName = node.name.value;
          const typeStr = inspect(type);
          context.reportError(
            new GraphQLError(
              `Field "${fieldName}" of type "${typeStr}" must have a selection of subfields. Did you mean "${fieldName} { ... }"?`,
              {
                nodes: node,
              },
            ),
          );
        } else if (selectionSet.selections.length === 0) {
          const fieldName = node.name.value;
          const typeStr = inspect(type);
          context.reportError(
            new GraphQLError(
              `Field "${fieldName}" of type "${typeStr}" must have at least one field selected.`,
              {
                nodes: node,
              },
            ),
          );
        }
      }
    },
  };
}

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