feat(type-guards): add type guards for About, LifeStyle, TechStack, a…

…nd SocialMedia

src/lib/type-guards.ts

@@ -0,0 +1,53 @@
+import { LifeStyle, TechStack, SocialMedia, About } from "./constants";
+
+export const isLifeStyle = (obj: unknown): obj is LifeStyle => {
+  if (!isObject(obj)) return false;
+  return (
+    typeof obj.icon === 'string' &&
+    typeof obj.title === 'string' &&
+    typeof obj.text === 'string'
+  );
+};
+
+export const isTechStack = (obj: unknown): obj is TechStack => {
+  if (!isObject(obj)) return false;
+  return (
+    typeof obj.id === 'string' &&
+    typeof obj.src === 'string' &&
+    typeof obj.alt === 'string'
+  );
+};
+
+export const isSocialMedia = (obj: unknown): obj is SocialMedia => {
+  if (!isObject(obj)) return false;
+  return (
+    typeof obj.githubUsername === 'string' &&
+    typeof obj.mediumUsername === 'string' &&
+    typeof obj.twitterUsername === 'string' &&
+    typeof obj.linkedinUsername === 'string'
+  );
+};
+
+export const isAbout = (obj: unknown): obj is About => {
+  if (!isObject(obj)) return false;
+  return (
+    isSocialMedia(obj.socialMedia) &&
+    typeof obj.header === 'string' &&
+    typeof obj.subHeader === 'string' &&
+    typeof obj.pronouns === 'string' &&
+    Array.isArray(obj.introductions) &&
+    obj.introductions.every(item => typeof item === 'string') &&
+    Array.isArray(obj.lifestyle) &&
+    obj.lifestyle.every(item => isLifeStyle(item)) &&
+    Array.isArray(obj.programmingLanguage) &&
+    obj.programmingLanguage.every(item => isTechStack(item)) &&
+    Array.isArray(obj.devOps) &&
+    obj.devOps.every(item => isTechStack(item))
+  );
+};
+
+
+export const isObject = (object: unknown): object is Record<string, unknown> => {
+  return typeof object === 'object' && object !== null && !Array.isArray(object);
+};
+