diff --git a/Makefile b/Makefile
index e732545..b09ca72 100644
--- a/Makefile
+++ b/Makefile
@@ -81,7 +81,7 @@ check: unit
 
 unit:
 	@$(call print, "Running unit tests.")
-	$(GOLIST) | $(XARGS) env $(GOTEST)
+	$(GOLIST) | $(XARGS) env $(GOTEST) -test.timeout=20m
 
 unit-cover: $(GOACC_BIN)
 	@$(call print, "Running unit coverage tests.")
@@ -89,7 +89,7 @@ unit-cover: $(GOACC_BIN)
 
 unit-race:
 	@$(call print, "Running unit race tests.")
-	env CGO_ENABLED=1 GORACE="history_size=7 halt_on_errors=1" $(GOLIST) | $(XARGS) env $(GOTEST) -race
+	env CGO_ENABLED=1 GORACE="history_size=7 halt_on_errors=1" $(GOLIST) | $(XARGS) env $(GOTEST) -race -test.timeout=20m
 
 # =========
 # UTILITIES
diff --git a/internal/prompt/prompt.go b/internal/prompt/prompt.go
index b967803..88730bf 100644
--- a/internal/prompt/prompt.go
+++ b/internal/prompt/prompt.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
+// +build !js
+
 package prompt
 
 import (
diff --git a/internal/prompt/prompt_js.go b/internal/prompt/prompt_js.go
new file mode 100644
index 0000000..674119d
--- /dev/null
+++ b/internal/prompt/prompt_js.go
@@ -0,0 +1,32 @@
+// Copyright (c) 2015-2021 The btcsuite developers
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
+package prompt
+
+import (
+	"bufio"
+	"fmt"
+
+	"github.com/btcsuite/btcwallet/internal/legacy/keystore"
+)
+
+func ProvideSeed() ([]byte, error) {
+	return nil, fmt.Errorf("prompt not supported in WebAssembly")
+}
+
+func ProvidePrivPassphrase() ([]byte, error) {
+	return nil, fmt.Errorf("prompt not supported in WebAssembly")
+}
+
+func PrivatePass(_ *bufio.Reader, _ *keystore.Store) ([]byte, error) {
+	return nil, fmt.Errorf("prompt not supported in WebAssembly")
+}
+
+func PublicPass(_ *bufio.Reader, _, _, _ []byte) ([]byte, error) {
+	return nil, fmt.Errorf("prompt not supported in WebAssembly")
+}
+
+func Seed(_ *bufio.Reader) ([]byte, error) {
+	return nil, fmt.Errorf("prompt not supported in WebAssembly")
+}