ASCII art timeline printer

Simple library that will put a list of intervals into a table-like ASCII art.

Installation

npm install ascii-timeline

Usage

The input needs to be an array of intervals {start: Date; end: Date}. Each interval can have additional metadata that will be used to group intervals into one timeline.

Example

Given input:

[
  {
    kind: "A",
    type: "1",
    start: new Date("2020-02-03T12:00"),
    end: new Date("2020-02-03T16:00"),
  },
  {
    kind: "A",
    type: "1",
    start: new Date("2020-02-04T08:00"),
    end: new Date("2020-02-04T16:00"),
  },
  {
    kind: "A",
    type: "2",
    start: new Date("2020-02-03T14:00"),
    end: new Date("2020-02-04T12:00"),
  },
  {
    kind: "B",
    type: "1",
    start: new Date("2020-02-03T10:00"),
    end: new Date("2020-02-04T22:00"),
  },
];

The algorithm will produce output:

          2020-02
kind type 03            04
A    1      12--16               8------16
A    2        14--------------------12
B    1    10----------------------------------22

Command line usage

The tool can be used in command line, just pipe JSON data to print-ascii-timeline and the table will be printed on stdout. start and end properties in JSON will be converted to Date using constructor (new Date(row.start)).

cat data.json | print-ascii-timeline

Using in your code

Function printAsciiTimeline can be imported from ascii-timeline. It has only one parameter with list of intervals and produces result as string.

import { printAsciiTimeline } from 'ascii-timeline';

console.log(printAsciiTimeline([...]);

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

MIT