Method constructor

src/type/directives.ts:171–196

* Creates a GraphQLDirective instance. * @param config - Configuration describing this object. * @example * ```ts * import { DirectiveLocation, parse } from 'graphql/language'; * import { * GraphQLBoolean, * GraphQLDirective, * GraphQLInt, * GraphQLNonNull, * }

(config: Readonly<GraphQLDirectiveConfig>)

   * ```
   */
  constructor(config: Readonly<GraphQLDirectiveConfig>) {
    this.__kind = directiveSymbol;
    this.name = assertName(config.name);
    this.description = config.description;
    this.locations = config.locations;
    this.isRepeatable = config.isRepeatable ?? false;
    this.deprecationReason = config.deprecationReason;
    this.extensions = toObjMapWithSymbols(config.extensions);
    this.astNode = config.astNode;
    this.extensionASTNodes = config.extensionASTNodes ?? [];

    devAssert(
      Array.isArray(config.locations),
      `@${this.name} locations must be an Array.`,
    );

    const args = config.args ?? {};
    devAssert(
      isObjectLike(args) && !Array.isArray(args),
      `@${this.name} args must be an object with argument names as keys.`,
    );

    this.args = Object.entries(args).map(
      ([argName, argConfig]) => new GraphQLArgument(this, argName, argConfig),
    );
  }

  /**
   * Returns the value used by `Object.prototype.toString`.