ProgressBar

ProgressBar in terminal for deno

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Update

v1.2.6 - 2022.5.30

Add option to show ETA.

v1.2.0 - 2020.12.5

Add support for “Render multiple progress bars”
Thanks “shixiaobao17145” for the great idea.

v1.1.1 - 2020.07.15

changes: add mod.unstable.ts and ./exmaples/width.unstable.ts

Deno v1.2.0 started to support tty column, but is unstable

deno run --unstable ./examples/width.unstable.ts

Usage

Multiple progress bars

example

import { MultiProgressBar } from "https://deno.land/x/progress@v1.2.7/mod.ts";

const title = "download files";
const total = 100;

const bars = new MultiProgressBar({
  title,
  // clear: true,
  complete: "=",
  incomplete: "-",
  display: "[:bar] :text :percent :time :completed/:total",
});

let completed1 = 0;
let completed2 = 0;

function downloading() {
  if (completed1 <= total || completed2 <= total) {
    completed1 += 1;
    completed2 += 2;
    bars.render([
      {
        completed: completed1,
        total,
        text: "file1",
        // You can also change the style of the progress bar
        // complete: "*",
        // incomplete: ".",
      },
      { completed: completed2, total, text: "file2" },
    ]);

    setTimeout(function () {
      downloading();
    }, 100);
  }
}

downloading();

interface

interface constructorOptions {
  title?: string;
  width?: number;
  complete?: string;
  incomplete?: string;
  clear?: boolean;
  interval?: number;
  display?: string;
}
interface renderOptions {
  completed: number;
  text?: string;
  total?: number;
  complete?: string;
  incomplete?: string;
}
class MultiProgressBar {
  /**
   * Title, total, complete, incomplete, can also be set or changed in the render method
   *
   * @param title Progress bar title, default: ''
   * @param width the displayed width of the progress, default: 50
   * @param complete completion character, default: colors.bgGreen(' '), can use any string
   * @param incomplete incomplete character, default: colors.bgWhite(' '), can use any string
   * @param clear  clear the bar on completion, default: false
   * @param interval  minimum time between updates in milliseconds, default: 16
   * @param display  What is displayed and display order, default: ':bar :text :percent :time :completed/:total'
   */
  constructor(optopns: ConstructorOptions);

  /**
   * "render" the progress bar
   *
   * - `bars` progress bars
   *   - `completed` completed value
   *   - `total` optional, total number of ticks to complete, default: 100
   *   - `text` optional, text displayed per ProgressBar, default: ''
   *   - `complete` - optional, completion character
   *   - `incomplete` - optional, incomplete character
   */
  render(bars: Array<renderOptions>): void;

  /**
   * console: interrupt the progress bar and write a message above it
   *
   * @param message The message to write
   */
  console(message: string): void;

  /**
   * end: end a progress bar.
   * No need to call in most cases, unless you want to end before 100%
   */
  end(): void;
}

display

What is displayed and display order, default: ‘:bar :text :percent :time :completed/:total’

  • :bar the progress bar itself
  • :text text displayed per ProgressBar
  • :percent completion percentage
  • :time time elapsed in seconds
  • :eta estimated completion time in seconds
  • :total total number of ticks to complete
  • :completed completed value

Single progress bar

simple example

import ProgressBar from "https://deno.land/x/progress@v1.2.7/mod.ts";

const title = "downloading:";
const total = 100;
const progress = new ProgressBar({
  title,
  total,
});
let completed = 0;
function downloading() {
  if (completed <= total) {
    progress.render(completed++);

    setTimeout(function () {
      downloading();
    }, 100);
  }
}
downloading();

complex example

import ProgressBar from "https://deno.land/x/progress@v1.2.7/mod.ts";

const total = 100;
const progress = new ProgressBar({
  total,
  complete: "=",
  incomplete: "-",
  display: ":completed/:total hello :time [:bar] :percent",
  // or =>
  // display: ':bar'
  // display: ':bar :time'
  // display: '[:bar]'
  // display: 'hello :bar world'
  // ...
});
let completed = 0;
function run() {
  if (completed <= total) {
    progress.render(completed++);

    setTimeout(function () {
      run();
    }, 100);
  }
}
run();

More examples in the examples folder.

interface

interface ConstructorOptions {
  title?: string, 
  total?: number, 
  width?: number, 
  complete?: string, 
  preciseBar?: string[], 
  incomplete?: string, 
  clear?: boolean, 
  interval?: number, 
  display?: string
}

interface renderOptions {
  title?: string, 
  total?: number, 
  complete?: string, 
  preciseBar?: string[], 
  incomplete?: string, 
}

class ProgressBar {
  /**  
   * Title, total, complete, incomplete, can also be set or changed in the render method 
   * 
   * @param title progress bar title, default: ''
   * @param total total number of ticks to complete
   * @param width the displayed width of the progress, default: 50
   * @param complete completion character, default: colors.bgGreen(' '), can use any string
   * @param preciseBar in between character, default: [colors.bgGreen(' ')], can use any string array
   * @param incomplete incomplete character, default: colors.bgWhite(' '), can use any string
   * @param clear  clear the bar on completion, default: false
   * @param interval  minimum time between updates in milliseconds, default: 16
   * @param display  What is displayed and display order, default: ':title :percent :bar :time :completed/:total'
   */
  constructor(optopns: ConstructorOptions): void; 

  /**
   * render: render the progress bar
   * 
   * @param completed completed value
   * @param options optional parameters
   * @param options.title progress bar title
   * @param options.total optional, total number of ticks to complete, default: 100
   * @param options.complete completion character, If you want to change at a certain moment. For example, it turns red at 20%
   * @param options.incomplete incomplete character, If you want to change at a certain moment. For example, it turns red at 20%
   */
  render(completed: number, options? renderOptions): void; 

  /**
   * console: interrupt the progress bar and write a message above it
   * 
   * @param message The message to write
   */
  console(message: string): void; 

  /**
   * end: end a progress bar.
   * No need to call in most cases, unless you want to end before 100%
   */
  end(): void; 
}

display

What is displayed and display order, default: ‘:title :percent :bar :time :completed/:total’

  • :title progress bar title
  • :percent completion percentage
  • :bar the progress bar itself
  • :time time elapsed in seconds
  • :eta estimated completion time in seconds
  • :completed completed value
  • :total total number of ticks to complete

Screenshots

Standard use

normal

Multi-line progress bar output in terminal

normal

Change how the order and look of elements

console

Change character color

console

Change background color

console

Color that changes with progress

console

Precise bar with more intermediate states

console

Wider bar

console

Clear the bar once finished

clear

Backward progress

backward

Log some messages

console

Log some messages next to the bar

console

More screenshots in the screenshots folder.