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

Tools for setting up graphql test resolvers

'use strict';

var graphql = require('graphql');
function attachFieldResolversToSchema(schema, resolverMap) {
  for (const typeName in resolverMap) {
    const type = schema.getType(typeName);
    if (!graphql.isObjectType(type)) {
      continue;
    }
    for (const fieldName in resolverMap[typeName]) {
      const resolver = resolverMap[typeName][fieldName];
      const fieldMap = type.getFields();
      const fieldNames = Object.keys(fieldMap);
      if (typeof resolver === 'function' && fieldNames.includes(fieldName)) {
        fieldMap[fieldName].resolve = resolver;
      }
    }
  }
}
exports.attachFieldResolversToSchema = attachFieldResolversToSchema;
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