Upgrade to Eleventy 3.0.0

config/filters/filterBy.js

@@ -1,4 +1,4 @@
-module.exports = (eleventyConfig) => {
+export default (eleventyConfig) => {
     eleventyConfig.addFilter('filterBy', (collection, value) => {
         return collection.filter((item) => {
             return item.data.tags.includes(value);