93 lines
2.4 KiB
JavaScript
93 lines
2.4 KiB
JavaScript
import { DateTime } from "luxon";
|
|
|
|
export default function (eleventyConfig) {
|
|
// Return the keys used in an object
|
|
eleventyConfig.addFilter("getKeys", (target) => {
|
|
return Object.keys(target);
|
|
});
|
|
|
|
/* Exclude all posts with given URLs from a collection list */
|
|
eleventyConfig.addFilter(
|
|
"excludeFromCollection",
|
|
function (collection = [], urls = [this.ctx.page.url]) {
|
|
return collection.filter((post) => urls.indexOf(post.url) === -1);
|
|
},
|
|
);
|
|
|
|
/* Filter a collection by a set of tags, returning any that share one or more tags */
|
|
eleventyConfig.addFilter(
|
|
"filterByTags",
|
|
function (collection = [], ...requiredTags) {
|
|
return collection.filter((post) => {
|
|
return requiredTags.flat().some((tag) => post.data.tags.includes(tag));
|
|
});
|
|
},
|
|
);
|
|
|
|
/* Return n elements from a list */
|
|
eleventyConfig.addFilter("head", (collection = [], n) => {
|
|
if (!Array.isArray(collection) || collection.length === 0) {
|
|
return [];
|
|
}
|
|
if (n < 0) {
|
|
return collection.slice(n);
|
|
}
|
|
|
|
return collection.slice(0, n);
|
|
});
|
|
|
|
/* For <time> elements */
|
|
eleventyConfig.addFilter("htmlDateString", (dateObj) => {
|
|
return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat("yyyy-LL-dd");
|
|
});
|
|
|
|
/* What it says on the tin */
|
|
eleventyConfig.addFilter("randomize", function (array) {
|
|
// Create a copy of the array to avoid modifying the original
|
|
let shuffledArray = array.slice();
|
|
|
|
// Fisher-Yates shuffle algorithm
|
|
for (let i = shuffledArray.length - 1; i > 0; i--) {
|
|
const j = Math.floor(Math.random() * (i + 1));
|
|
[shuffledArray[i], shuffledArray[j]] = [
|
|
shuffledArray[j],
|
|
shuffledArray[i],
|
|
];
|
|
}
|
|
|
|
return shuffledArray;
|
|
});
|
|
|
|
/* Human-readable dates */
|
|
eleventyConfig.addFilter("readableDate", (dateObj) => {
|
|
return DateTime.fromJSDate(dateObj, { zone: "utc" }).toLocaleString(
|
|
DateTime.DATE_FULL,
|
|
);
|
|
});
|
|
|
|
/* Filter out structural tags */
|
|
eleventyConfig.addFilter("removeBasicTags", (tags) => {
|
|
return tags.filter(
|
|
(tag) =>
|
|
[
|
|
"all",
|
|
"posts",
|
|
"gallery",
|
|
"reference",
|
|
"tagPagination",
|
|
"blur",
|
|
].indexOf(tag) === -1,
|
|
);
|
|
});
|
|
|
|
/* What it says on the tin */
|
|
eleventyConfig.addFilter("sortAlphabetically", (strings) =>
|
|
(strings || []).sort((b, a) => b.localeCompare(a)),
|
|
);
|
|
|
|
/* Remove year from image filenames for OG metadata file path */
|
|
eleventyConfig.addFilter("toOgFilename", (filename) => {
|
|
return filename.split("/")[1];
|
|
});
|
|
}
|
