text: // @flow strict
  
  import invariant from './invariant';
  import nodejsCustomInspectSymbol from './nodejsCustomInspectSymbol';
  
  /**
   * The `defineInspect()` function defines `inspect()` prototype method as alias of `toJSON`
   */
  export default function defineInspect(
    classObject: Class<any> | ((...args: Array<any>) => mixed),
  ): void {
    const fn = classObject.prototype.toJSON;
    invariant(typeof fn === 'function');
  
    classObject.prototype.inspect = fn;
  
    // istanbul ignore else (See: https://github.com/graphql/graphql-js/issues/2317)
    if (nodejsCustomInspectSymbol) {
      classObject.prototype[nodejsCustomInspectSymbol] = fn;
    }
  }
  