Progress bar in terminal for deno
Update
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@v1.2.2/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;
preciseBar?: 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): void;
/**
* "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;
}
Single progress bar
- simple example
import ProgressBar from "https://deno.land/x/progress@v1.2.2/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@v1.2.2/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 Progress bar total
* @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;
}
Screenshots
Standard use
Multi-line progress bar output in terminal
Change how the order and look of elements
Change character color
Change background color
Color that changes with progress
Precise bar with more intermediate states
Wider bar
Clear the bar once finished
Backward progress
Log some messages
Log some messages next to the bar
More screenshots in the screenshots
folder.