added type definitions

src/lib/taxonomyParser.astro

@@ -6,7 +6,7 @@ import { slugify } from "./utils/textConverter";
 export const getTaxonomy = async (collection: string, name: string) => {
   const singlePages = await getSinglePage(collection);
   const taxonomyPages = singlePages.map((page) => page.data[name]);
-  let taxonomies = [];
+  let taxonomies: string[] = [];
   for (let i = 0; i < taxonomyPages.length; i++) {
     const categoryArray = taxonomyPages[i];
     for (let j = 0; j < categoryArray.length; j++) {
@@ -20,7 +20,7 @@ export const getTaxonomy = async (collection: string, name: string) => {
 export const getAllTaxonomy = async (collection: string, name: string) => {
   const singlePages = await getSinglePage(collection);
   const taxonomyPages = singlePages.map((page) => page.data[name]);
-  let taxonomies = [];
+  let taxonomies: string[] = [];
   for (let i = 0; i < taxonomyPages.length; i++) {
     const categoryArray = taxonomyPages[i];
     for (let j = 0; j < categoryArray.length; j++) {

src/lib/utils/dateFormat.ts

@@ -1,6 +1,6 @@
 import { formatInTimeZone } from "date-fns-tz";
 
-const dateFormat = (date:Date | string, format:string = "dd MMM, yyyy") => {
+const dateFormat = (date:Date | string, format:string = "dd MMM, yyyy"): string => {
   return formatInTimeZone(date, "America/New_York", format);
 };
 

src/lib/utils/readingTime.ts

@@ -1,5 +1,5 @@
 // content reading
-const readingTime = (content: string) => {
+const readingTime = (content: string): string => {
   const WPS = 275 / 60;
 
   let images = 0;

src/lib/utils/similarItems.ts

@@ -1,7 +1,7 @@
 // similer products
 const similerItems = (currentItem: any, allItems: any, slug: string) => {
-  let categories: [] = [];
-  let tags: [] = [];
+  let categories: string[] = [];
+  let tags: string[] = [];
 
   // set categories
   if (currentItem.data.categories.length > 0) {

src/lib/utils/taxonomyFilter.ts

@@ -1,6 +1,6 @@
 import { slugify } from "@/lib/utils/textConverter";
 
-const taxonomyFilter = (posts: any[], name: string, key: any) =>
+const taxonomyFilter = (posts: any[], name: string, key: string) =>
   posts.filter((post) =>
     post.data[name].map((name: string) => slugify(name)).includes(key)
   );

src/lib/utils/textConverter.ts

@@ -7,22 +7,18 @@ marked.use({
 });
 
 // slugify
-export const slugify = (content: string) => {
-  if (!content) return null;
+export const slugify = (content: string): string => {
 
   return slug(content);
 };
 
 // markdownify
-export const markdownify = (content: string, div?:boolean) => {
-  if (!content) return null;
-
+export const markdownify = (content: string, div?:boolean): string => {
   return div? marked.parse(content) : marked.parseInline(content);
 };
 
 // humanize
-export const humanize = (content: string) => {
-  if (!content) return null;
+export const humanize = (content: string): string => {
 
   return content
     .replace(/^[\s_]+|[\s_]+$/g, "")
@@ -33,9 +29,7 @@ export const humanize = (content: string) => {
 };
 
 // plainify
-export const plainify = (content: string) => {
-  if (!content) return null;
-
+export const plainify = (content: string): string => {
   const filterBrackets = content.replace(/<\/?[^>]+(>|$)/gm, "");
   const filterSpaces = filterBrackets.replace(/[\r\n]\s*[\r\n]/gm, "");
   const stripHTML = htmlEntityDecoder(filterSpaces);