What is @rushstack/terminal?
@rushstack/terminal is a library designed to provide a standardized way to handle terminal output in Node.js applications. It offers features for writing colored text, handling different log levels, and managing output streams in a consistent manner.
What are @rushstack/terminal's main functionalities?
Colored Text Output
This feature allows you to write colored text to the terminal. The `formatColor` method is used to apply color to the text.
const { Terminal } = require('@rushstack/terminal');
const terminal = new Terminal(process.stdout);
terminal.writeLine('This is a normal line.');
terminal.writeLine(terminal.formatColor('red', 'This is a red line.'));
terminal.writeLine(terminal.formatColor('green', 'This is a green line.'));
Log Levels
This feature allows you to write messages with different log levels such as verbose, warning, and error. This helps in categorizing the output based on its importance.
const { Terminal, ConsoleTerminalProvider } = require('@rushstack/terminal');
const terminalProvider = new ConsoleTerminalProvider();
const terminal = new Terminal(terminalProvider);
terminal.writeVerboseLine('This is a verbose message.');
terminal.writeWarningLine('This is a warning message.');
terminal.writeErrorLine('This is an error message.');
Output Streams
This feature allows you to manage output streams. In this example, the output is written to a string buffer instead of directly to the console, which can be useful for testing or logging purposes.
const { Terminal, StringBufferTerminalProvider } = require('@rushstack/terminal');
const stringBuffer = new StringBufferTerminalProvider();
const terminal = new Terminal(stringBuffer);
terminal.writeLine('This is a line in the buffer.');
console.log(stringBuffer.getOutput());
Other packages similar to @rushstack/terminal
chalk
Chalk is a popular library for styling terminal strings in Node.js. It offers a wide range of colors and styles, making it a versatile choice for terminal output. Compared to @rushstack/terminal, Chalk focuses more on styling text rather than providing a comprehensive terminal management solution.
winston
Winston is a versatile logging library for Node.js that supports multiple transports (e.g., console, file, HTTP). It offers features like log levels, custom formats, and more. While @rushstack/terminal focuses on terminal output, Winston provides a more comprehensive logging solution.
ora
Ora is a library for creating elegant terminal spinners. It is useful for indicating ongoing processes in the terminal. While @rushstack/terminal provides general terminal output management, Ora specializes in creating and managing spinners.