How to use

extend

function

in

lodash

/**
   * @param {string | array.string} path
   *     Path or array of paths to files or directories with index definitions
   * @param {ValidateOptions} [options]
   */
  constructor(path, options) {
    this.paths = isArrayLike(path) ? Array.from(path) : [path];
    this.options = extend({logger: console}, options);
  }

defaultHeaders(){
    const authorization = {} ;
    return extend({}, { 'Accept': 'application/json', 'Content-Type': 'text/plain' }, authorization);
  }

function createSchema (config) {
 const connection = mysql.createConnection(extend({
  multipleStatements: true
 }, config));

 connection.query(
  `CREATE DATABASE IF NOT EXISTS \`bookshelf\`
   DEFAULT CHARACTER SET = 'utf8'
   DEFAULT COLLATE 'utf8_general_ci';
  USE \`bookshelf\`;
  CREATE TABLE IF NOT EXISTS \`bookshelf\`.\`books\` (
   \`id\` INT UNSIGNED NOT NULL AUTO_INCREMENT,
   \`title\` VARCHAR(255) NULL,
   \`author\` VARCHAR(255) NULL,
   \`publishedDate\` VARCHAR(255) NULL,
   \`imageUrl\` VARCHAR(255) NULL,
   \`description\` TEXT NULL,
   \`createdBy\` VARCHAR(255) NULL,
   \`createdById\` VARCHAR(255) NULL,
  PRIMARY KEY (\`id\`));`,
  (err) => {
   if (err) {
    throw err;
   }
   console.log('Successfully created schema');
   connection.end();
  }
 );
}

  let connectionInfo = extend(
    parseBaseOptions(cmd),
let connectionInfo = extend(
  parseBaseOptions(cmd),
  options.logger = extend({}, console, {
    info: () => {},
  });

/**
   * @param {IndexManager} manager
   * @param {array.IndexMutation} [mutations]
   * @param {PlanOptions} [options]
   */
  constructor(manager, mutations, options) {
    this.manager = manager;
    this.options = extend(defaultOptions, options);

    this.mutations = addMutationsByPhase(mutations, []);
  }

/**
   * @param {IndexManager} manager
   * @param {string | array.string} path
   *     Path or array of paths to files or directories with index definitions
   * @param {SyncOptions} [options]
   */
  constructor(manager, path, options) {
    this.manager = manager;
    this.paths = isArrayLike(path) ? Array.from(path) : [path];
    this.options = extend({logger: console}, options);

    if (this.paths.find((p) => p === '-')) {
      // Can't do interactive prompts if processing from stdin
      this.options.interactive = false;
    }
  }