Loader

A loading bar utility tool for the node terminal.

Setup

const Loader = require('tty-loader'),
loader = new Loader({options});

The default options object is :

{
    fill: ['-', '[]', 'White', 'whiteBright'], //component styling
    mode: Symbol(AUTO), //disable auto-draw
    tty: process.stdout, //tty.WriteStream to bind to
    showPerc: true, //show percentance of the loading bar on right
    position: 'center', //position of loading bar
    width: process.stdout.columns / 2, //width of loading bar
    line: Symbol(AUTO), //line to bind
    completed: 0, //points pre-completed
    fake: 100 //pseudopoints-to-complete
}

Usage :

loader.place(2); //place on second line of stream, given that it exists or an error will be thrown. This will lock the loader on that specific line rather than being appended to the output.
loader.update(50); //set the fill status to 50, given that loader's `fake` is 100, this will occupy half of loader's `width`
loader.updateBy(1); //this will set loader's `completed` to 51
loader.placeBy(1); //this will move loader's bound line by 1 down
loader.points(100); //this will set `fake` to 100
loader.pointsBy(1); //this will set `fake` to 101
loader.draw(); //this will render the loading bar to the console. This is automatically done if `_mode` is set to `Symbol(AUTO)` (default)

When the loading is completed the loader will emit a completed event on itself carrying the completition date and set its _ended property to that date.
Other properties:

• _line -> Bound line
• line -> Line difference from bound line to current stream line
• _started -> Loader's creation date
• tty -> Bound TTY
• tty._data -> Bound TTY's written data
• width -> Loader's width in (characters)
• position -> Loader's position (in characters)
• completed -> Points completed out of fake
• _minus -> Lines rendered useless by readline's erasing mechanism
• fill -> Array containing all components if the loading bar
• _mode -> Whether loader will be automatically rendered. Edit to disable

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Dependencies

• Chalk
• Stream-Intercept

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