diff --git a/lib/streams.ts b/lib/streams.ts
index 952c0e2b7e..cc32805c49 100644
--- a/lib/streams.ts
+++ b/lib/streams.ts
@@ -481,10 +481,10 @@ export class ReadWriteStream extends ReadStream implements WriteStream {
 			const nodeStream: NodeJS.WritableStream = options.nodeStream;
 			this.nodeWritableStream = nodeStream;
 			options.write = function (data: string | Buffer) {
-				const result = this.nodeWritableStream!.write(data);
+				const result = this.nodeWritableStream.write(data);
 				if (result !== false) return undefined;
 				if (!this.drainListeners.length) {
-					this.nodeWritableStream!.once('drain', () => {
+					this.nodeWritableStream.once('drain', () => {
 						for (const listener of this.drainListeners) listener();
 						this.drainListeners = [];
 					});
@@ -497,7 +497,7 @@ export class ReadWriteStream extends ReadStream implements WriteStream {
 			if (nodeStream !== process.stdout && nodeStream !== process.stderr) {
 				options.writeEnd = function () {
 					return new Promise<void>(resolve => {
-						this.nodeWritableStream!.end(() => resolve());
+						this.nodeWritableStream.end(() => resolve());
 					});
 				};
 			}
diff --git a/sim/dex-moves.ts b/sim/dex-moves.ts
index 4ca1f06b5e..247abeb802 100644
--- a/sim/dex-moves.ts
+++ b/sim/dex-moves.ts
@@ -462,7 +462,7 @@ export class DataMove extends BasicEffect implements Readonly<BasicEffect & Move
 		this.effectType = 'Move';
 		this.type = Utils.getString(data.type);
 		this.target = data.target;
-		this.basePower = Number(data.basePower!);
+		this.basePower = Number(data.basePower);
 		this.accuracy = data.accuracy!;
 		this.critRatio = Number(data.critRatio) || 1;
 		this.baseMoveType = Utils.getString(data.baseMoveType) || this.type;
@@ -479,7 +479,7 @@ export class DataMove extends BasicEffect implements Readonly<BasicEffect & Move
 		this.ignoreOffensive = !!data.ignoreOffensive;
 		this.ignoreDefensive = !!data.ignoreDefensive;
 		this.ignoreImmunity = (data.ignoreImmunity !== undefined ? data.ignoreImmunity : this.category === 'Status');
-		this.pp = Number(data.pp!);
+		this.pp = Number(data.pp);
 		this.noPPBoosts = !!data.noPPBoosts;
 		this.isZ = data.isZ || false;
 		this.isMax = data.isMax || false;