/*
 * Copyright The OpenTelemetry Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Attributes is a map from string to attribute values.
 *
 * Note: only the own enumerable keys are counted as valid attribute keys.
 *
 * @since 1.3.0
 */
export interface Attributes {
  [attributeKey: string]: AttributeValue | undefined;
}

/**
 * Attribute values may be any non-nullish primitive value except an object.
 *
 * null or undefined attribute values are invalid and will result in undefined behavior.
 *
 * @since 1.3.0
 */
export type AttributeValue =
  | string
  | number
  | boolean
  | Array<null | undefined | string>
  | Array<null | undefined | number>
  | Array<null | undefined | boolean>;
