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ansi-escapes
Advanced tools
The ansi-escapes npm package provides a collection of ANSI escape codes for manipulating the terminal. These codes can be used to control cursor movement, erase text, manage scrollback, and more, allowing developers to create interactive command-line applications.
Cursor Movement
Moves the cursor to the specified x and y position (column 5, row 10).
const ansiEscapes = require('ansi-escapes');
console.log(ansiEscapes.cursorTo(5, 10));
Erase Lines
Erases the specified number of lines (2 lines in this case) from the current cursor position up.
const ansiEscapes = require('ansi-escapes');
console.log(ansiEscapes.eraseLines(2));
Scrolling
Scrolls the terminal viewport up or down one line.
const ansiEscapes = require('ansi-escapes');
console.log(ansiEscapes.scrollUp());
console.log(ansiEscapes.scrollDown());
Clearing Screen
Clears the terminal screen and moves the cursor to the upper-left corner.
const ansiEscapes = require('ansi-escapes');
console.log(ansiEscapes.clearScreen);
Beep
Triggers the terminal bell, which often makes an audible beep sound.
const ansiEscapes = require('ansi-escapes');
console.log(ansiEscapes.beep);
Chalk is a popular package for styling terminal strings with colors and styles but does not include the cursor and screen manipulation features of ansi-escapes.
Blessed is a high-level terminal interface library that includes screen and cursor manipulation, similar to ansi-escapes, but offers a more comprehensive API for building terminal applications.
Cli-cursor allows for showing and hiding the terminal cursor, which is a subset of the functionality provided by ansi-escapes.
Inquirer is a package for creating interactive command-line user interfaces. It uses escape codes under the hood for cursor movement and screen manipulation, similar to ansi-escapes, but provides a higher-level API for building prompts.
ANSI escape codes for manipulating the terminal
$ npm install ansi-escapes
const ansiEscapes = require('ansi-escapes');
// Moves the cursor two rows up and to the left
process.stdout.write(ansiEscapes.cursorUp(2) + ansiEscapes.cursorLeft);
//=> '\u001B[2A\u001B[1000D'
Set the absolute position of the cursor. x0
y0
is the top left of the screen.
Set the position of the cursor relative to its current position.
Move cursor up a specific amount of rows. Default is 1
.
Move cursor down a specific amount of rows. Default is 1
.
Move cursor forward a specific amount of rows. Default is 1
.
Move cursor backward a specific amount of rows. Default is 1
.
Move cursor to the left side.
Save cursor position.
Restore saved cursor position.
Get cursor position.
Move cursor to the next line.
Move cursor to the previous line.
Hide cursor.
Show cursor.
Erase from the current cursor position up the specified amount of rows.
Erase from the current cursor position to the end of the current line.
Erase from the current cursor position to the start of the current line.
Erase the entire current line.
Erase the screen from the current line down to the bottom of the screen.
Erase the screen from the current line up to the top of the screen.
Erase the screen and move the cursor the top left position.
Scroll display up one line.
Scroll display down one line.
Clear the terminal screen. (Viewport)
Clear the whole terminal, including scrollback buffer. (Not just the visible part of it)
Output a beeping sound.
Create a clickable link.
Supported terminals. Use supports-hyperlinks
to detect link support.
Display an image.
Currently only supported on iTerm2 >=3
See term-img for a higher-level module.
Type: Buffer
Buffer of an image. Usually read in with fs.readFile()
.
Type: string
number
The width and height are given as a number followed by a unit, or the word "auto".
N
: N character cells.Npx
: N pixels.N%
: N percent of the session's width or height.auto
: The image's inherent size will be used to determine an appropriate dimension.Type: boolean
Default: true
Type: string
Default: process.cwd()
Inform iTerm2 of the current directory to help semantic history and enable Cmd-clicking relative paths.
MIT © Sindre Sorhus
FAQs
ANSI escape codes for manipulating the terminal
The npm package ansi-escapes receives a total of 40,815,817 weekly downloads. As such, ansi-escapes popularity was classified as popular.
We found that ansi-escapes demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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