graphql-mocks/es/highlight/utils/get-instance-for-reference.js

Tools for setting up graphql test resolvers

import { isObjectType, isInputObjectType } from 'graphql';
import { isTypeReference } from './is-type-reference.js';
import { getTypeForReference } from './get-type-for-reference.js';
import { isFieldReference } from './is-field-reference.js';
import { getFieldForReference } from './get-field-for-reference.js';

function getInstanceForReference(schema, reference) {
  if (isTypeReference(reference)) {
    return getTypeForReference(schema, reference);
  }

  if (isFieldReference(reference)) {
    var [typeName, fieldName] = reference;
    var type = getTypeForReference(schema, typeName);
    var field = getFieldForReference(schema, [typeName, fieldName]);

    if (isObjectType(type) && field) {
      return [type, field];
    }

    if (isInputObjectType(type) && field) {
      return [type, field];
    }
  }

  return undefined;
}

export { getInstanceForReference };
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