Refactor: Move 11ty filters to separate file

docs/_utils/filters.js

@@ -0,0 +1,24 @@
+import { parse } from 'path';
+
+export function stripExtension(string) {
+  return parse(string).name;
+}
+
+export function stripPrefix(content) {
+  return content.replace(/^wa-/, '');
+}
+
+// Trims whitespace and pipes from the start and end of a string. Useful for CEM types, which can be pipe-delimited.
+// With Prettier 3, this means a leading pipe will exist be present when the line wraps.
+export function trimPipes(content) {
+  return typeof content === 'string' ? content.replace(/^(\s|\|)/g, '').replace(/(\s|\|)$/g, '') : content;
+}
+
+export function keys(obj) {
+  return Object.keys(obj);
+}
+
+export function log(firstArg, ...rest) {
+  console.log(firstArg, ...rest);
+  return firstArg;
+}