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

Tools for setting up graphql test resolvers

'use strict';

var graphql = require('graphql');
var isTypeReference = require('./is-type-reference.js');
var getTypeForReference = require('./get-type-for-reference.js');
var isFieldReference = require('./is-field-reference.js');
var getFieldForReference = require('./get-field-for-reference.js');
function getInstanceForReference(schema, reference) {
  if (isTypeReference.isTypeReference(reference)) {
    return getTypeForReference.getTypeForReference(schema, reference);
  }
  if (isFieldReference.isFieldReference(reference)) {
    const [typeName, fieldName] = reference;
    const type = getTypeForReference.getTypeForReference(schema, typeName);
    const field = getFieldForReference.getFieldForReference(schema, [typeName, fieldName]);
    if (graphql.isObjectType(type) && field) {
      return [type, field];
    }
    if (graphql.isInputObjectType(type) && field) {
      return [type, field];
    }
  }
  return undefined;
}
exports.getInstanceForReference = getInstanceForReference;
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