diff --git a/server/disk_avail.go b/server/disk_avail.go
index 20bb090a..412cea8b 100644
--- a/server/disk_avail.go
+++ b/server/disk_avail.go
@@ -11,8 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build !windows && !openbsd
-// +build !windows,!openbsd
+//go:build !windows && !openbsd && !wasm
+// +build !windows,!openbsd,!wasm
 
 package server
 
diff --git a/server/disk_avail_wasm.go b/server/disk_avail_wasm.go
new file mode 100644
index 00000000..39a88fa4
--- /dev/null
+++ b/server/disk_avail_wasm.go
@@ -0,0 +1,21 @@
+// Copyright 2022 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build wasm
+// +build wasm
+
+package server
+
+func diskAvailable(storeDir string) int64 {
+	return JetStreamMaxStoreDefault
+}
diff --git a/server/pse/pse_wasm.go b/server/pse/pse_wasm.go
new file mode 100644
index 00000000..52d379c9
--- /dev/null
+++ b/server/pse/pse_wasm.go
@@ -0,0 +1,23 @@
+// Copyright 2021 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pse
+
+// This is a placeholder for now.
+func ProcUsage(pcpu *float64, rss, vss *int64) error {
+	*pcpu = 0.0
+	*rss = 0
+	*vss = 0
+
+	return nil
+}
diff --git a/server/signal.go b/server/signal.go
index f59b424d..28955618 100644
--- a/server/signal.go
+++ b/server/signal.go
@@ -11,8 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build !windows
-// +build !windows
+//go:build !windows && !wasm
+// +build !windows,!wasm
 
 package server
 
diff --git a/server/signal_wasm.go b/server/signal_wasm.go
new file mode 100644
index 00000000..5bea0b0b
--- /dev/null
+++ b/server/signal_wasm.go
@@ -0,0 +1,22 @@
+// Copyright 2022 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package server
+
+func (s *Server) handleSignals() {
+
+}
+
+func ProcessSignal(command Command, service string) error {
+	return nil
+}
diff --git a/server/sysmem/mem_wasm.go b/server/sysmem/mem_wasm.go
new file mode 100644
index 00000000..0b713955
--- /dev/null
+++ b/server/sysmem/mem_wasm.go
@@ -0,0 +1,21 @@
+// Copyright 2021 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build wasm
+
+package sysmem
+
+func Memory() int64 {
+	// TODO: We don't know the system memory
+	return 0
+}