graphql-mocks/es/graphql/utils/attach-field-resolvers-to-schema.js

Tools for setting up graphql test resolvers

import { isObjectType } from 'graphql';

function attachFieldResolversToSchema(schema, resolverMap) {
  for (var typeName in resolverMap) {
    var type = schema.getType(typeName);

    if (!isObjectType(type)) {
      continue;
    }

    for (var fieldName in resolverMap[typeName]) {
      var resolver = resolverMap[typeName][fieldName];
      var fieldMap = type.getFields();
      var fieldNames = Object.keys(fieldMap);

      if (typeof resolver === 'function' && fieldNames.includes(fieldName)) {
        fieldMap[fieldName].resolve = resolver;
      }
    }
  }
}

export { attachFieldResolversToSchema };
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