/**
 * Returns instrumentations for outbound HTTP traffic — Node `http`/`https`
 * (covers `node-fetch` etc.) and `undici` (covers global `fetch`).
 *
 * Both packages are declared as optional peer dependencies of
 * `@cleverbrush/otel`. Install them in the host project to use:
 *
 * ```sh
 * npm install @opentelemetry/instrumentation-http @opentelemetry/instrumentation-undici
 * ```
 *
 * @returns an array of instrumentation instances ready to pass to {@link import('./setupOtel.js').setupOtel}
 *
 * @example
 * ```ts
 * import { setupOtel } from '@cleverbrush/otel';
 * import { outboundHttpInstrumentations } from '@cleverbrush/otel/instrumentations';
 *
 * setupOtel({
 *     serviceName: 'todo-backend',
 *     instrumentations: outboundHttpInstrumentations(),
 * });
 * ```
 */
export declare function outboundHttpInstrumentations(): unknown[];
/**
 * Returns the Node.js runtime metrics instrumentation, which emits
 * basic process gauges (event loop lag, GC, heap size).
 *
 * Requires `@opentelemetry/instrumentation-runtime-node` to be
 * installed in the host project.
 *
 * @returns an array containing one instrumentation instance, or empty if the package is not installed
 *
 * @example
 * ```ts
 * import { setupOtel } from '@cleverbrush/otel';
 * import { runtimeMetrics } from '@cleverbrush/otel/instrumentations';
 *
 * setupOtel({
 *     serviceName: 'todo-backend',
 *     instrumentations: runtimeMetrics(),
 * });
 * ```
 */
export declare function runtimeMetrics(): unknown[];