Clean up some type guards

src/api/routes/guilds/#guild_id/messages/search.ts

@@ -56,7 +56,7 @@ router.get(
         if (parsedLimit < 1 || parsedLimit > 100) throw new HTTPError("limit must be between 1 and 100", 422);
 
         if (sort_order) {
-            if (typeof sort_order != "string" || ["desc", "asc"].indexOf(sort_order) == -1)
+            if (["desc", "asc"].indexOf(sort_order) == -1)
                 throw FieldErrors({
                     sort_order: {
                         message: "Value must be one of ('desc', 'asc').",

src/gateway/events/Message.ts

@@ -40,11 +40,11 @@ export async function Message(this: WebSocket, buffer: WS.Data) {
     let data: Payload;
 
     if (
-        (buffer instanceof Buffer && buffer[0] === 123) || // ASCII 123 = `{`. Bad check for JSON
+        (Buffer.isBuffer(buffer) && buffer[0] === 123) || // ASCII 123 = `{`. Bad check for JSON
         typeof buffer === "string"
     ) {
         data = bigIntJson.parse(buffer.toString());
-    } else if (this.encoding === "json" && buffer instanceof Buffer) {
+    } else if (this.encoding === "json" && Buffer.isBuffer(buffer)) {
         if (this.compress === "zlib-stream") {
             try {
                 buffer = this.inflate!.process(buffer);
@@ -59,7 +59,7 @@ export async function Message(this: WebSocket, buffer: WS.Data) {
             }
         }
         data = bigIntJson.parse(buffer as string);
-    } else if (this.encoding === "etf" && buffer instanceof Buffer && erlpack) {
+    } else if (this.encoding === "etf" && Buffer.isBuffer(buffer) && erlpack) {
         try {
             data = erlpack.unpack(buffer);
         } catch {

src/util/entities/User.ts

@@ -199,7 +199,7 @@ export class User extends BaseClass {
     validate() {
         if (this.discriminator) {
             const discrim = Number(this.discriminator);
-            if (isNaN(discrim) || !(typeof discrim == "number") || !Number.isInteger(discrim) || discrim <= 0 || discrim >= 10000)
+            if (isNaN(discrim) || !Number.isInteger(discrim) || discrim <= 0 || discrim >= 10000)
                 throw FieldErrors({
                     discriminator: {
                         message: "Discriminator must be a number.",

src/util/util/DateBuilder.ts

@@ -19,10 +19,7 @@
 export class DateBuilder {
     private date: Date;
     // constructors
-    constructor(date = new Date()) {
-        if (!(date instanceof Date)) {
-            throw new Error("Invalid date object.");
-        }
+    constructor(date: Date = new Date()) {
         this.date = new Date(date.getTime()); // Create a copy to avoid mutating the original date
     }