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# ansi-escapes
> [ANSI escape codes](http://www.termsys.demon.co.uk/vtansi.htm) for manipulating the terminal
## Install
```
$ npm install ansi-escapes
```
## Usage
```js
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'
```
## API
### cursorTo(x, y?)
Set the absolute position of the cursor. `x0` `y0` is the top left of the screen.
### cursorMove(x, y?)
Set the position of the cursor relative to its current position.
### cursorUp(count)
Move cursor up a specific amount of rows. Default is `1`.
### cursorDown(count)
Move cursor down a specific amount of rows. Default is `1`.
### cursorForward(count)
Move cursor forward a specific amount of columns. Default is `1`.
### cursorBackward(count)
Move cursor backward a specific amount of columns. Default is `1`.
### cursorLeft
Move cursor to the left side.
### cursorSavePosition
Save cursor position.
### cursorRestorePosition
Restore saved cursor position.
### cursorGetPosition
Get cursor position.
### cursorNextLine
Move cursor to the next line.
### cursorPrevLine
Move cursor to the previous line.
### cursorHide
Hide cursor.
### cursorShow
Show cursor.
### eraseLines(count)
Erase from the current cursor position up the specified amount of rows.
### eraseEndLine
Erase from the current cursor position to the end of the current line.
### eraseStartLine
Erase from the current cursor position to the start of the current line.
### eraseLine
Erase the entire current line.
### eraseDown
Erase the screen from the current line down to the bottom of the screen.
### eraseUp
Erase the screen from the current line up to the top of the screen.
### eraseScreen
Erase the screen and move the cursor the top left position.
### scrollUp
Scroll display up one line.
### scrollDown
Scroll display down one line.
### clearScreen
Clear the terminal screen. (Viewport)
### clearTerminal
Clear the whole terminal, including scrollback buffer. (Not just the visible part of it)
### beep
Output a beeping sound.
### link(text, url)
Create a clickable link.
[Supported terminals.](https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda) Use [`supports-hyperlinks`](https://github.com/jamestalmage/supports-hyperlinks) to detect link support.
### image(filePath, options?)
Display an image.
*Currently only supported on iTerm2 >=3*
See [term-img](https://github.com/sindresorhus/term-img) for a higher-level module.
#### input
Type: `Buffer`
Buffer of an image. Usually read in with `fs.readFile()`.
#### options
Type: `object`
##### width
##### height
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.
##### preserveAspectRatio
Type: `boolean`\
Default: `true`
### iTerm.setCwd(path?)
Type: `string`\
Default: `process.cwd()`
[Inform iTerm2](https://www.iterm2.com/documentation-escape-codes.html) of the current directory to help semantic history and enable [Cmd-clicking relative paths](https://coderwall.com/p/b7e82q/quickly-open-files-in-iterm-with-cmd-click).
### iTerm.annotation(message, options?)
Creates an escape code to display an "annotation" in iTerm2.
An annotation looks like this when shown:
<img src="https://user-images.githubusercontent.com/924465/64382136-b60ac700-cfe9-11e9-8a35-9682e8dc4b72.png" width="500">
See the [iTerm Proprietary Escape Codes documentation](https://iterm2.com/documentation-escape-codes.html) for more information.
#### message
Type: `string`
The message to display within the annotation.
The `|` character is disallowed and will be stripped.
#### options
Type: `object`
##### length
Type: `number`\
Default: The remainder of the line
Nonzero number of columns to annotate.
##### x
Type: `number`\
Default: Cursor position
Starting X coordinate.
Must be used with `y` and `length`.
##### y
Type: `number`\
Default: Cursor position
Starting Y coordinate.
Must be used with `x` and `length`.
##### isHidden
Type: `boolean`\
Default: `false`
Create a "hidden" annotation.
Annotations created this way can be shown using the "Show Annotations" iTerm command.
## Related
- [ansi-styles](https://github.com/chalk/ansi-styles) - ANSI escape codes for styling strings in the terminal
---
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