diff --git a/prometheus/process_collector_js.go b/prometheus/process_collector_js.go
deleted file mode 100644
index 0b42a6f..0000000
--- a/prometheus/process_collector_js.go
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright 2019 The Prometheus 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 js
-// +build js
-
-package prometheus
-
-func canCollectProcess() bool {
-	return false
-}
-
-// describe returns all descriptions of the collector for js.
-// Ensure that this list of descriptors is kept in sync with the metrics collected
-// in the processCollect method. Any changes to the metrics in processCollect
-// (such as adding or removing metrics) should be reflected in this list of descriptors.
-func (c *processCollector) processCollect(ch chan<- Metric) {
-	c.errorCollectFn(ch)
-}
-
-func (c *processCollector) describe(ch chan<- *Desc) {
-	c.errorDescribeFn(ch)
-}
diff --git a/prometheus/process_collector_wasip1.go b/prometheus/process_collector_wasip1_js.go
similarity index 95%
rename from prometheus/process_collector_wasip1.go
rename to prometheus/process_collector_wasip1_js.go
index 5c74c2c..c68f7f8 100644
--- a/prometheus/process_collector_wasip1.go
+++ b/prometheus/process_collector_wasip1_js.go
@@ -11,8 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build wasip1
-// +build wasip1
+//go:build wasip1 || js
+// +build wasip1 js
 
 package prometheus
 
@@ -24,7 +24,7 @@ func (c *processCollector) processCollect(ch chan<- Metric) {
 	c.errorCollectFn(ch)
 }
 
-// describe returns all descriptions of the collector for wasip1.
+// describe returns all descriptions of the collector for wasip1 and js.
 // Ensure that this list of descriptors is kept in sync with the metrics collected
 // in the processCollect method. Any changes to the metrics in processCollect
 // (such as adding or removing metrics) should be reflected in this list of descriptors.