@geeebe/common

@geeebe/common

This library has tiny bit of useful code, plus a util for setting up a typescript project with some common useful settings including ts-node, tslint and jest.

Getting Started

In empty project directory.

npm init
# fill in details asked (defaults will do)
npm i @geeebe/common
npx geeebe init

This will do the following for your project

• create .editorconfig, .gitignore and .npmignore
• install typescript and ts-node
• install and configure tslint
• install jest with ts-jest and create a starter config
• install and configure nodemon

To get started, write some typescript code in src/index.ts and run it.

To run, either use:

• npm start to run one-off using ts-node
• npm run watch to run and watch for changes using nodemon and ts-node
• npm run build to build output to dist/ using tsc

Also useful:

• npm test to run jest tests in the test/ directory (looking for *.test.ts files)
• npm run lint to run tslint

Included Code

Not too much here...

HTTP response status

import { Statuses } from '@geeebe/common';

// ...

if (status === Statuses.NOT_FOUND) {} // 404

Some simple functions for time and duration

import { Time } from '@geeebe/common';

const fiveMinutes = Time.minutes(5); // 5 min in ms = 5 * 60 * 1000
const sevenHours = Time.hours(7); // 7 hours in ms
const someTime = Time.days(2) + Time.hours(3) + Time.seconds(2);

// and then
const hours = Time.toHours(sevenHours);
// etc

// also
const fourHoursAgo = Time.past(Time.hours(4)); // Date() of 4 hours ago
const future = Time.future(Time.seconds(45)); // or in the future

Methods:

• ms(ms: number): Duration
• seconds(s: number): Duration
• minutes(m: number): Duration
• hours(h: number): Duration
• days(d: number): Duration
• toMs(d: Duration): number
• toSeconds(d: Duration): number
• toMinutes(d: Duration): number
• toHours(d: Duration): number
• toDays(d: Duration): number
• past(interval: Duration): Date
• future(interval: Duration): Date

Constants:

• SECOND = 1000
• MINUTE = 60 * Time.SECOND
• HOUR = 60 * Time.MINUTE
• DAY = 24 * Time.HOUR

Async sleep function

await sleep(Time.seconds(45));