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infocom-systems-design/node_modules/pino-abstract-transport/index.d.ts
2025-10-03 22:27:28 +03:00

123 lines
3.5 KiB
TypeScript

// Type definitions for pino-abstract-transport 0.4.0
// Project: https://github.com/pinojs/pino-abstract-transport#readme
// Definitions by: Diyar Oktay <https://github.com/windupbird144>
/// <reference types="node" />
import { Transform } from "stream";
type BuildOptions = {
/**
* `parseLine(line)` a function that is used to parse line received from pino.
* @default JSON.parse
*/
parseLine?: (line: string) => unknown;
/**
* `parse` an option to change to data format passed to build function.
* @default undefined
*
*/
parse?: "lines";
/**
* `close(err, cb)` a function that is called to shutdown the transport.
* It's called both on error and non-error shutdowns. It can also return
* a promise. In this case discard the the cb argument.
*
* @example
* ```typescript
* {
* close: function (err, cb) {
* process.nextTick(cb, err)
* }
* }
* ```
* */
close?: (err: Error, cb: Function) => void | Promise<void>;
/**
* `metadata` If set to false, do not add metadata properties to the returned stream
*/
metadata?: false;
/**
* `expectPinoConfig` If set to true, the transport will wait for pino to send its
* configuration before starting to process logs.
*/
expectPinoConfig?: boolean;
};
/**
* Pass these options to wrap the split2 stream and
* the returned stream into a Duplex
*/
type EnablePipelining = BuildOptions & {
enablePipelining: true;
};
/**
* Create a split2 instance and returns it. This same instance is also passed
* to the given function, which is called after pino has sent its configuration.
*
* @returns {Promise<Transform>} the split2 instance
*/
declare function build(
fn: (transform: Transform & build.OnUnknown) => void | Promise<void>,
opts: BuildOptions & { expectPinoConfig: true }
): Promise<Transform & build.OnUnknown>;
/**
* Create a split2 instance and returns it. This same instance is also passed
* to the given function, which is called synchronously.
*
* @returns {Transform} the split2 instance
*/
declare function build(
fn: (transform: Transform & build.OnUnknown) => void | Promise<void>,
opts?: BuildOptions
): Transform & build.OnUnknown;
/**
* Creates a split2 instance and passes it to the given function, which is called
* after pino has sent its configuration. Then wraps the split2 instance and
* the returned stream into a Duplex, so they can be concatenated into multiple
* transports.
*
* @returns {Promise<Transform>} the wrapped split2 instance
*/
declare function build(
fn: (transform: Transform & build.OnUnknown) => Transform & build.OnUnknown,
opts: EnablePipelining & { expectPinoConfig: true }
): Promise<Transform>;
/**
* Creates a split2 instance and passes it to the given function, which is called
* synchronously. Then wraps the split2 instance and the returned stream into a
* Duplex, so they can be concatenated into multiple transports.
*
* @returns {Transform} the wrapped split2 instance
*/
declare function build(
fn: (transform: Transform & build.OnUnknown) => Transform & build.OnUnknown,
opts: EnablePipelining
): Transform;
declare namespace build {
export interface OnUnknown {
/**
* `unknown` is the event emitted where an unparsable line is found
*
* @param event 'unknown'
* @param line the unparsable line
* @param error the error that was thrown when parsing the line
*/
on(
event: "unknown",
listener: (line: string, error: unknown) => void
): void;
}
}
export = build;