Migrate to typescript

src/utils/permalinks.ts

@@ -0,0 +1,63 @@
+import slugify from 'limax';
+
+import { SITE, BLOG } from '~/config.mjs';
+
+const trim = (str = '', ch?: string) => {
+	let start = 0,
+		end = str.length || 0;
+	while (start < end && str[start] === ch) ++start;
+	while (end > start && str[end - 1] === ch) --end;
+	return start > 0 || end < str.length ? str.substring(start, end) : str;
+};
+
+const trimSlash = (s) => trim(trim(s, '/'));
+const createPath = (...params) => {
+	const paths = params.filter((el) => !!el).join('/');
+	return '/' + paths + (SITE.trailingSlash && paths ? '/' : '');
+};
+
+const basePathname = trimSlash(SITE.basePathname);
+
+export const cleanSlug = (text: string) => slugify(trimSlash(text));
+
+export const BLOG_BASE = cleanSlug(BLOG?.blog?.pathname);
+export const POST_BASE = cleanSlug(BLOG?.post?.pathname);
+export const CATEGORY_BASE = cleanSlug(BLOG?.category?.pathname);
+export const TAG_BASE = cleanSlug(BLOG?.tag?.pathname);
+
+/** */
+export const getCanonical = (path = '') => new URL(path, SITE.origin);
+
+/** */
+export const getPermalink = (slug = '', type = 'page'): string => {
+	const _slug = cleanSlug(slug);
+
+	switch (type) {
+		case 'category':
+			return createPath(basePathname, CATEGORY_BASE, _slug);
+
+		case 'tag':
+			return createPath(basePathname, TAG_BASE, _slug);
+
+		case 'post':
+			return createPath(basePathname, POST_BASE, _slug);
+
+		case 'page':
+		default:
+			return createPath(basePathname, _slug);
+	}
+};
+
+/** */
+export const getHomePermalink = (): string => {
+	const permalink = getPermalink();
+	return permalink !== '/' ? permalink + '/' : permalink;
+};
+
+/** */
+export const getRelativeLink = (link = ''): string => {
+	return createPath(basePathname, trimSlash(link));
+};
+
+/** */
+export const getBlogPermalink = (): string => getPermalink(BLOG_BASE);