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date-to-iso-8601-string

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date-to-iso-8601-string

Presents a JavaScript `Date` as a string in [ISO 8601 format](https://www.loc.gov/standards/datetime/iso-tc154-wg5_n0038_iso_wd_8601-1_2016-02-16.pdf), with support for the Extended (`YYYY-MM-DD`) and Basic (`YYYYMMDD`) variants

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date-to-iso-8601-string

Presents a JavaScript Date as a string in ISO 8601 format, with support for the Extended (YYYY-MM-DD) and Basic (YYYYMMDD) variants.

Note that this module uses the "local date" in the time zone of the machine, rather than the UTC dfate.

This package includes TypeScript types.

Installation

# With npm
npm install --save date-to-iso-8601-string

# With Yarn
yarn add date-to-iso-8601-string

Usage

Presenting a Date using the more common "Extended" (YYYY-MM-DD format)

// You can also import as a CommonJS module using `require`
import { dateToISO8601String } from 'date-to-iso-8601-string';

const date = new Date('2023-01-01');
dateToISO8601String(date);
//=> '2023-01-01'

Presenting a Date using the less common "Basic" (YYYY-MM-DD format)

import { dateToISO8601String, ISO8601DateFormat } from 'date-to-iso-8601-string';

const date = new Date('2023-01-01');
dateToISO8601String(date, ISO8601DateFormat.Basic);
//=> '20230101'

Development

  • This library code in src/ is written with Typescript.
    • You can compile it to native JavaScript module form (dist/esm) and CommonJS form (dist/commonjs) by running npm run build.
    • The code is automatically built before pushing to npm thanks to a prepublish hook.
  • Tests are implemented using Jest.
    • You can run the tests with npm run test.
  • Linting (including code formatting) is enforced with ESLint, augmented by Prettier.
    • You can check your code with npm run lint, and automatically fix many failures with npm run lint-and-fix.

The compilation, testing and build process are automatically run on pushed code using GitHub Actions.

With thanks to:

The following blog posts were very helpful for putting this - my first ever npm package - together!:

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Package last updated on 27 Apr 2022

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