A collection of utilities I found myself using on every project. Open to MR/PR/Issues/suggestions

• Installation
• Usage
• Filters
• Slugify
• Utils
  • Limit
  • Date
    • ISO
    • UTC
    • Long Date
    • Day
    • Day with Ordinal
    • Month
    • Month Name
    • Year
• To Do

Installation

npm i --save @mikestreety/11ty-utils

In your .eleventy.js, you then add it as a plugin

const utils = require("@mikestreety/11ty-utils");

module.exports = (eleventyConfig) => {
	eleventyConfig.addPlugin(utils);
};

Usage

Below are the utils included within the package. Along with using them in 11ty, you can also include the Javascript file and require the module you need.

For example, if you want to use the dayOridinal filter as a function in a data file, you can do:

const {dayOrdinal} = require('@mikestreety/11ty-utils/filters/date');

//...

dayOrdinal(post.date);

Filters

These are the filters included within the Utils

Slugify

Turn a string into a URL friendly string (or slug). This is particularly useful, especially when building pagination or creating a collection from a JSON feed.

Example output: This is a string becomes this-is-a-string

• Filter: {{ post.data.title | slugify }}
• Function: slugify(date)

For use with a Javascript file:

const slugify = require('@mikestreety/11ty-utils/filters/slugify');

Utils

Limit

This is useful if you want to limit the number of posts on your homepage, for example.

Example use:

{% set postslist = collections.blog | limit(6) %}
{%- for entry in postslist -%}
	//
{% endfor %}

Date

If you require the functions in a Javascript file, you can require them, only including the functions you need. For example:

const {iso, utc} = require('@mikestreety/11ty-utils/filters/date');

ISO

Returns an ISO formatted date string , used for things like schema markup

Example output: 2011-10-05T14:48:00.000Z

• Filter: {{ date | dateISO }}
• Function: iso(date)

Docs link

ISO Short

Returns an ISO formatted date string without the time - useful for sitemaps

Example output: 2011-10-05

• Filter: {{ date | dateISOShort }}
• Function: isoShort(date)

Docs link

UTC

Returns a rfc7231 style UTC date string. For use with RSS

Example output: Tue, 06 Apr 2021 00:00:00 GMT

• Filter: {{ date | dateUTC }}
• Function: utc(date)

Docs link

Long Date

A long date formatted with the ordinal and long month name

Example output: 22nd March 2021

• Filter: {{ date | dateLong }}
• Function: longDate(date)

Day

The day in number format

Example output: 22 or 6

• Function: day(date)

Day with Ordinal

The day in number format with the ordinal (nth, rd) appended

Example output: 22nd or 6th

• Function: dayOrdinal(date)

Month

The month in a numerical format

Example output: 1 or 11

• Function: month(date)

Month Name

The full name of the month

Example output: March or December

• Function: monthName(date)

Year

The full year

Example output: 2021 or 1995

• Function: year(date)

To Do

• Add truncate
  • add truncateWords which does a number of words
  • truncateChars will do characters (meta desc as default)
• Add dateShort in a DD/MM/YY format (although, America?)