diff --git a/server/src/server/router/ir/usc/_playtype/router.ts b/server/src/server/router/ir/usc/_playtype/router.ts
index 0e3cc5681..6802b0dad 100644
--- a/server/src/server/router/ir/usc/_playtype/router.ts
+++ b/server/src/server/router/ir/usc/_playtype/router.ts
@@ -43,7 +43,7 @@ enum STATUS_CODES {
 const ValidateUSCRequest: RequestHandler = async (req, res, next) => {
 	const token = req.header("Authorization");
 
-	if (!token) {
+	if (token === undefined) {
 		return res.status(200).json({
 			statusCode: STATUS_CODES.BAD_REQ,
 			description: "No auth token provided.",
@@ -224,7 +224,7 @@ router.get("/charts/:chartHash/leaderboard", RetrieveChart, async (req, res) =>
 
 	try {
 		n = AssertStrAsPositiveNonZeroInt(req.query.n, "Invalid 'N' param.");
-	} catch (err) {
+	} catch (_err) {
 		return res.status(200).json({
 			statusCode: STATUS_CODES.BAD_REQ,
 			description: `Invalid 'n' param - expected a positive non-zero integer less than or equal to ${USCIR_MAX_LEADERBOARD_N}.`,
@@ -265,7 +265,7 @@ router.get("/charts/:chartHash/leaderboard", RetrieveChart, async (req, res) =>
 	});
 });
 
-const PR_USCIRChartDoc = {
+const PR_USCIR_CHART_DOC = {
 	chartHash: "string",
 	artist: "string",
 	title: "string",
@@ -286,7 +286,7 @@ router.post("/scores", RequirePermissions("submit_score"), async (req, res) => {
 
 	const chartErr = p(
 		req.body.chart,
-		PR_USCIRChartDoc,
+		PR_USCIR_CHART_DOC,
 		{},
 		{
 			throwOnNonObject: false,
@@ -333,14 +333,19 @@ router.post("/scores", RequirePermissions("submit_score"), async (req, res) => {
 	// If the import failed, AND the import failure WAS NOT that the chart didnt exist
 	// report that error instead.
 	if (importDoc.errors[0]?.type && importDoc.errors[0].type !== "KTDataNotFound") {
-		logger.info(`USC Import Failed ${importDoc.errors[0].message}`, {
-			importDoc,
-			userID,
-		});
+		logger.info(
+			`USC Import Failed ${importDoc.errors[0].message ?? "with null error message?"}`,
+			{
+				importDoc,
+				userID,
+			}
+		);
 
 		return res.status(200).json({
 			statusCode: STATUS_CODES.BAD_REQ,
-			description: `${importDoc.errors[0].type} ${importDoc.errors[0].message}`,
+			description: `${importDoc.errors[0].type} ${
+				importDoc.errors[0].message ?? "No Error Message"
+			}`,
 		});
 	}
 
@@ -355,7 +360,7 @@ router.post("/scores", RequirePermissions("submit_score"), async (req, res) => {
 	}
 
 	// If the chartDoc exists, any error is a failure here.
-	if (importDoc.errors[0]) {
+	if (importDoc.errors.length !== 0) {
 		logger.info(`USC Import Failed ${importDoc.errors[0].message}`, {
 			importDoc,
 			userID,
@@ -382,7 +387,7 @@ router.post("/scores", RequirePermissions("submit_score"), async (req, res) => {
 			description: "Successfully imported score.",
 			body,
 		});
-	} catch (err) {
+	} catch (_err) {
 		return res.status(200).json({
 			statusCode: STATUS_CODES.SERVER_ERROR,
 			description: "An internal server error has occured.",
diff --git a/server/src/server/router/ir/usc/_playtype/types.ts b/server/src/server/router/ir/usc/_playtype/types.ts
index 708dd173a..7ccab5052 100644
--- a/server/src/server/router/ir/usc/_playtype/types.ts
+++ b/server/src/server/router/ir/usc/_playtype/types.ts
@@ -28,7 +28,9 @@ export interface USCClientScore {
 		gaugeOpt: integer;
 		mirror: boolean;
 		random: boolean;
-		autoFlags: integer; // ???
+
+		// ??? - Not sure what these are.
+		autoFlags: integer;
 	};
 	windows: {
 		perfect: number;
diff --git a/server/src/server/router/ir/usc/_playtype/usc.ts b/server/src/server/router/ir/usc/_playtype/usc.ts
index c8fe723a5..0e8ef536b 100644
--- a/server/src/server/router/ir/usc/_playtype/usc.ts
+++ b/server/src/server/router/ir/usc/_playtype/usc.ts
@@ -169,7 +169,7 @@ export async function CreatePOSTScoresResponseBody(
 
 	const originalScore = (await db.scores.findOne({
 		scoreID,
-	})) as ScoreDocument<"usc:Controller" | "usc:Keyboard">;
+	})) as ScoreDocument<"usc:Controller" | "usc:Keyboard"> | null;
 
 	if (!originalScore) {
 		logger.severe(
diff --git a/server/src/server/server.ts b/server/src/server/server.ts
index 09ba55b80..58527cb00 100644
--- a/server/src/server/server.ts
+++ b/server/src/server/server.ts
@@ -1,16 +1,17 @@
+import { RequestLoggerMiddleware } from "./middleware/request-logger";
+import mainRouter from "./router/router";
 import connectRedis from "connect-redis";
 import express from "express";
-import type { Express } from "express";
-import "express-async-errors";
 import expressSession from "express-session";
 import { RedisClient } from "external/redis/redis";
 import helmet from "helmet";
 import { SYMBOL_TACHI_API_AUTH } from "lib/constants/tachi";
 import CreateLogCtx from "lib/logger/logger";
 import { Environment, ServerConfig, TachiConfig } from "lib/setup/config";
+import type { Express } from "express";
+import "express-async-errors";
 import type { integer } from "tachi-common";
-import { RequestLoggerMiddleware } from "./middleware/request-logger";
-import mainRouter from "./router/router";
+import { IsNonEmptyString } from "utils/misc";
 
 const logger = CreateLogCtx(__filename);
 
@@ -39,13 +40,15 @@ const userSessionMiddleware = expressSession({
 	saveUninitialized: false,
 	cookie: {
 		secure: Environment.nodeEnv === "production" || ServerConfig.ENABLE_SERVER_HTTPS,
-		sameSite: "strict", // Very important. Without this, we're vulnerable to CSRF!
+
+		// Very important. Without this, we're vulnerable to CSRF!
+		sameSite: "strict",
 	},
 });
 
 const app: Express = express();
 
-if (Environment.nodeEnv !== "production" && ServerConfig.CLIENT_DEV_SERVER) {
+if (Environment.nodeEnv !== "production" && IsNonEmptyString(ServerConfig.CLIENT_DEV_SERVER)) {
 	logger.warn(`Enabling CORS requests from ${ServerConfig.CLIENT_DEV_SERVER}.`, {
 		bootInfo: true,
 	});
@@ -63,7 +66,7 @@ if (Environment.nodeEnv !== "production" && ServerConfig.CLIENT_DEV_SERVER) {
 	});
 
 	// hack to allow all OPTIONS requests. Remember that this setting should not be on in production!
-	if (ServerConfig.OPTIONS_ALWAYS_SUCCEEDS) {
+	if (ServerConfig.OPTIONS_ALWAYS_SUCCEEDS === true) {
 		app.options("*", (req, res) => res.send());
 	}
 } else {
@@ -117,7 +120,7 @@ app.use("/", mainRouter);
 // In dev, this is a pain to setup, so we can just run it locally.
 if (
 	ServerConfig.CDN_CONFIG.SAVE_LOCATION.TYPE === "LOCAL_FILESYSTEM" &&
-	ServerConfig.CDN_CONFIG.SAVE_LOCATION.SERVE_OWN_CDN
+	ServerConfig.CDN_CONFIG.SAVE_LOCATION.SERVE_OWN_CDN === true
 ) {
 	if (Environment.nodeEnv === "production") {
 		logger.warn(
diff --git a/server/src/test-utils/api-common.ts b/server/src/test-utils/api-common.ts
index 45dcf83bf..535900e12 100644
--- a/server/src/test-utils/api-common.ts
+++ b/server/src/test-utils/api-common.ts
@@ -9,43 +9,48 @@ export function RequireAuthPerms(
 	perms: APIPermissions | Array<APIPermissions>,
 	method: "DELETE" | "GET" | "PATCH" | "POST" | "PUT" = "GET"
 ) {
-	t.test(`Testing permissions for ${method} ${url} [${perms}]`, async (t) => {
-		const m = method.toLowerCase() as Lowercase<typeof method>;
+	return t.test(
+		`Testing permissions for ${method} ${url} [${
+			Array.isArray(perms) ? perms.join(", ") : perms
+		}]`,
+		async (t) => {
+			const m = method.toLowerCase() as Lowercase<typeof method>;
 
-		const res = await mockApi[m](url);
+			const res = await mockApi[m](url);
 
-		// 401 if no auth given
-		t.equal(res.statusCode, 401);
+			// 401 if no auth given
+			t.equal(res.statusCode, 401);
 
-		await db["api-tokens"].insert({
-			identifier: "temp_auth_perms",
-			permissions: {},
-			token: "temp_auth",
-			userID: 1,
-			fromAPIClient: null,
-		});
+			await db["api-tokens"].insert({
+				identifier: "temp_auth_perms",
+				permissions: {},
+				token: "temp_auth",
+				userID: 1,
+				fromAPIClient: null,
+			});
 
-		const resAuth = await mockApi[m](url).set("Authorization", "Bearer temp_auth");
+			const resAuth = await mockApi[m](url).set("Authorization", "Bearer temp_auth");
 
-		t.equal(resAuth.statusCode, 403);
+			t.equal(resAuth.statusCode, 403);
 
-		const prm = Array.isArray(perms) ? perms : [perms];
+			const prm = Array.isArray(perms) ? perms : [perms];
 
-		await db["api-tokens"].insert({
-			identifier: "temp_auth_perms2",
-			permissions: Object.fromEntries(prm.map((e) => [e, true])),
-			token: "temp_auth2",
-			userID: 1,
-			fromAPIClient: null,
-		});
+			await db["api-tokens"].insert({
+				identifier: "temp_auth_perms2",
+				permissions: Object.fromEntries(prm.map((e) => [e, true])),
+				token: "temp_auth2",
+				userID: 1,
+				fromAPIClient: null,
+			});
 
-		const resAuthed = await mockApi[m](url).set("Authorization", "Bearer temp_auth2");
+			const resAuthed = await mockApi[m](url).set("Authorization", "Bearer temp_auth2");
 
-		t.not(resAuthed.statusCode, 401);
-		t.not(resAuthed.statusCode, 403);
+			t.not(resAuthed.statusCode, 401);
+			t.not(resAuthed.statusCode, 403);
 
-		await ResetDBState();
+			await ResetDBState();
 
-		t.end();
-	});
+			t.end();
+		}
+	);
 }
diff --git a/server/src/test-utils/asserts.ts b/server/src/test-utils/asserts.ts
index 3e1a513cc..2f36f6ed1 100644
--- a/server/src/test-utils/asserts.ts
+++ b/server/src/test-utils/asserts.ts
@@ -23,7 +23,7 @@ export function isApproximately(
 
 export function prAssert(
 	t: Tap.Test,
-	obj: Record<string, unknown> | unknown,
+	obj: unknown,
 	schema: PrudenceSchema,
 	message = "Unnamed Prudence Assertion"
 ) {
diff --git a/server/src/test-utils/cleanup.ts b/server/src/test-utils/cleanup.ts
index ceec739b3..4fed67c1e 100644
--- a/server/src/test-utils/cleanup.ts
+++ b/server/src/test-utils/cleanup.ts
@@ -6,7 +6,7 @@ import { CloseRedisPubSub } from "external/redis/redis-IPC";
 import { CloseScoreImportQueue } from "lib/score-import/worker/queue";
 
 export async function CleanUpAfterTests() {
-	if (process.env.TAP_SNAPSHOT) {
+	if (process.env.TAP_SNAPSHOT !== "" && process.env.TAP_SNAPSHOT !== undefined) {
 		WriteSnapshotData();
 	}
 
diff --git a/server/src/test-utils/mock-api.ts b/server/src/test-utils/mock-api.ts
index 065082611..3067b15df 100644
--- a/server/src/test-utils/mock-api.ts
+++ b/server/src/test-utils/mock-api.ts
@@ -11,7 +11,16 @@ logger.verbose("Connecting to Supertest...");
 const mockApi = supertest(connection);
 
 export function CloseServerConnection() {
-	return connection.close();
+	return new Promise<void>((resolve, reject) => {
+		connection.close((err) => {
+			if (err) {
+				reject(err);
+				return;
+			}
+
+			resolve();
+		});
+	});
 }
 
 export default mockApi;
diff --git a/server/src/test-utils/mock-multer.ts b/server/src/test-utils/mock-multer.ts
index bb464ff56..ac0694dd5 100644
--- a/server/src/test-utils/mock-multer.ts
+++ b/server/src/test-utils/mock-multer.ts
@@ -1,6 +1,8 @@
 export function MockMulterFile(buffer: Buffer, originalname: string) {
-	return {
+	const mockFile: Express.Multer.File = {
 		originalname,
 		buffer,
-	} as Express.Multer.File;
+	};
+
+	return mockFile;
 }
diff --git a/server/src/utils/class.ts b/server/src/utils/class.ts
index 15588cb43..1835f90b1 100644
--- a/server/src/utils/class.ts
+++ b/server/src/utils/class.ts
@@ -80,7 +80,7 @@ export async function UpdateClassIfGreater(
 	});
 
 	if (isGreater === null) {
-		EmitWebhookEvent({
+		void EmitWebhookEvent({
 			type: "class-update/v1",
 			content: { userID, new: classVal, old: null, set: classSet, game, playtype },
 		});
@@ -88,7 +88,7 @@ export async function UpdateClassIfGreater(
 		return null;
 	}
 
-	EmitWebhookEvent({
+	void EmitWebhookEvent({
 		type: "class-update/v1",
 		content: {
 			userID,
diff --git a/server/src/utils/db.ts b/server/src/utils/db.ts
index ec89a392b..5ed996c7c 100644
--- a/server/src/utils/db.ts
+++ b/server/src/utils/db.ts
@@ -195,7 +195,7 @@ export async function GetRecentlyAchievedGoals(
 		goalID: { $in: goalSubs.map((e) => e.goalID) },
 	});
 
-	if (goals.length !== goals.length) {
+	if (goals.length !== goalSubs.length) {
 		logger.error(
 			`Found ${goals.length} goals when looking for parents of ${goalSubs.length} subscriptions. This mismatch implies a state desync.`
 		);
diff --git a/server/src/utils/ea3id.ts b/server/src/utils/ea3id.ts
index 70e057a03..c1a0019ad 100644
--- a/server/src/utils/ea3id.ts
+++ b/server/src/utils/ea3id.ts
@@ -11,7 +11,10 @@ export function ParseEA3SoftID(ver: string) {
 
 	return {
 		model: a[0],
-		dest: a[1], // region
+
+		// region
+		dest: a[1],
+
 		spec: a[2],
 		rev: a[3],
 		ext: a[4],
diff --git a/server/src/utils/misc.ts b/server/src/utils/misc.ts
index 5f212ead8..01131f173 100644
--- a/server/src/utils/misc.ts
+++ b/server/src/utils/misc.ts
@@ -135,11 +135,11 @@ export function IsValidURL(string: string) {
 }
 
 export function Sleep(ms: number) {
-	return new Promise<void>((resolve) =>
+	return new Promise<void>((resolve) => {
 		setTimeout(() => {
 			resolve();
-		}, ms)
-	);
+		}, ms);
+	});
 }
 
 export function GetTimeXHoursAgo(hours: integer) {
@@ -228,3 +228,7 @@ export function IsSupported(game: Game) {
 export function ArrayDiff<T>(left: Array<T>, right: Array<T>) {
 	return right.filter((e) => !left.includes(e));
 }
+
+export function IsNonEmptyString(maybeStr: string | null | undefined): maybeStr is string {
+	return Boolean(maybeStr);
+}