diff --git a/src/common.ts b/src/common.ts
index f6eb7eb..d2c197f 100644
--- a/src/common.ts
+++ b/src/common.ts
@@ -51,13 +51,13 @@ export class PushOnlyObserver<A> implements BListener, SListener<A> {
   pushB(t: number): void {
     this.callback((<Behavior<A>>this.source).last);
   }
-  pushS(t: number, value: A): void {
+  pushS(_t: number, value: A): void {
     this.callback(value);
   }
   deactivate(): void {
     this.source.removeListener(this.node);
   }
-  changeStateDown(state: State): void {}
+  changeStateDown(_state: State): void {}
 }
 
 export type NodeParentPair = {
@@ -144,10 +144,10 @@ export class CbObserver<A> implements BListener, SListener<A> {
       this.callback(this.source.last);
     }
   }
-  pushB(t: number): void {
+  pushB(_t: number): void {
     this.callback((<Behavior<A>>this.source).last);
   }
-  pushS(t: number, value: A): void {
+  pushS(_t: number, value: A): void {
     this.callback(value);
   }
   changeStateDown(state: State): void {
diff --git a/src/now.ts b/src/now.ts
index 4f411c2..13a3b1d 100644
--- a/src/now.ts
+++ b/src/now.ts
@@ -242,15 +242,6 @@ export function performStreamOrdered<A>(s: Stream<IO<A>>): Now<Stream<A>> {
   return new PerformStreamOrderedNow(s);
 }
 
-class PlanNow<A> extends Now<Future<A>> {
-  constructor(private future: Future<Now<A>>) {
-    super();
-  }
-  run(time: Time): Future<A> {
-    return this.future.map((n) => n.run(time));
-  }
-}
-
 export function plan<A>(future: Future<Now<A>>): Now<Future<A>> {
   return performMap<Now<A>, A>(runNow, future);
 }