@types/npmlog

What is @types/npmlog?

@types/npmlog provides TypeScript type definitions for the npmlog package, which is a logger with a log level and prefix system commonly used in Node.js applications.

What are @types/npmlog's main functionalities?

Basic Logging

This feature allows you to log informational messages using the 'info' log level.

const log = require('npmlog');
log.info('info', 'This is an informational message');

Log Levels

This feature allows you to set different log levels such as 'verbose', 'info', 'warn', and 'error'.

const log = require('npmlog');
log.level = 'verbose';
log.verbose('verbose', 'This is a verbose message');

Custom Prefixes

This feature allows you to add custom log levels with specific prefixes and colors.

const log = require('npmlog');
log.addLevel('custom', 3000, { fg: 'blue' });
log.custom('custom', 'This is a custom log message');

Progress Bar

This feature allows you to display a progress bar in the log output.

const log = require('npmlog');
log.enableProgress();
log.showProgress();
log.progressEnabled = true;
log.progress('progress', 'Loading...');

Other packages similar to @types/npmlog

winston

Winston is a versatile logging library for Node.js with support for multiple transports, log levels, and formats. It is more feature-rich compared to npmlog and is suitable for more complex logging requirements.

bunyan

Bunyan is a simple and fast JSON logging library for Node.js. It provides a structured logging approach and is well-suited for applications that require JSON log output.

pino

Pino is a low-overhead, high-performance logging library for Node.js. It is designed to be extremely fast and efficient, making it a good choice for performance-critical applications.

README

Installation

npm install --save @types/npmlog

Summary

This package contains type definitions for npmlog (https://github.com/npm/npmlog#readme).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/npmlog.

index.d.ts

/// <reference types="node" />

import { EventEmitter } from "events";

declare namespace npmlog {
    // TODO: newStream, newGroup, setGaugeTemplate and setGaugeTemplateSet need to be added
    interface Logger extends EventEmitter {
        (): any;

        level: string;
        record: MessageObject[];
        maxRecordSize: number;
        prefixStyle: StyleObject;
        headingStyle: StyleObject;
        heading: string;
        stream: any; // Defaults to process.stderr

        log(level: LogLevels | string, prefix: string, message: string, ...args: any[]): void;

        silly(prefix: string, message: string, ...args: any[]): void;
        verbose(prefix: string, message: string, ...args: any[]): void;
        info(prefix: string, message: string, ...args: any[]): void;
        timing(prefix: string, message: string, ...args: any[]): void;
        http(prefix: string, message: string, ...args: any[]): void;
        notice(prefix: string, message: string, ...args: any[]): void;
        warn(prefix: string, message: string, ...args: any[]): void;
        error(prefix: string, message: string, ...args: any[]): void;
        silent(prefix: string, message: string, ...args: any[]): void;

        enableColor(): void;
        disableColor(): void;

        enableProgress(): void;
        disableProgress(): void;
        progressEnabled(): boolean;

        enableUnicode(): void;
        disableUnicode(): void;

        pause(): void;
        resume(): void;

        addLevel(level: string, n: number, style?: StyleObject, disp?: string): void;

        // Allows for custom log levels
        // npmlog.addLevel("custom", level)
        // npmlog.custom(prefix, message)
        [key: string]: any;
    }

    type LogLevels = "silly" | "verbose" | "info" | "timing" | "http" | "notice" | "warn" | "error" | "silent";

    interface StyleObject {
        fg?: string | undefined;
        bg?: string | undefined;
        bold?: boolean | undefined;
        inverse?: boolean | undefined;
        underline?: boolean | undefined;
        bell?: boolean | undefined;
    }

    interface MessageObject {
        id: number;
        level: string;
        prefix: string;
        message: string;
        messageRaw: string;
    }
}

declare var npmlog: npmlog.Logger;
export = npmlog;

Additional Details

• Last updated: Wed, 18 Oct 2023 05:47:08 GMT
• Dependencies: @types/node

Credits

These definitions were written by Daniel Schmidt, and Joseph Wynn.