diff --git a/go.mod b/go.mod
index 1e08c34..63b0967 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,5 @@
 module apigo.cc/go/cast
 
-go 1.25
+go 1.25.0
+
+require apigo.cc/go/jsmod v1.0.0
diff --git a/go.sum b/go.sum
index e69de29..c645036 100644
--- a/go.sum
+++ b/go.sum
@@ -0,0 +1,2 @@
+apigo.cc/go/jsmod v1.0.0 h1:lVQMq0tCno4kbHlQ3j5wzsm+v24J+bznIoHxpton0pE=
+apigo.cc/go/jsmod v1.0.0/go.mod h1:bmyeZtOAP/j5am+YRnaiM89smysK24K7ebk0koFtsSw=
diff --git a/js_export.go b/js_export.go
new file mode 100644
index 0000000..785f740
--- /dev/null
+++ b/js_export.go
@@ -0,0 +1,31 @@
+package cast
+
+import (
+	"apigo.cc/go/jsmod"
+)
+
+func init() {
+	jsmod.Register("cast", map[string]any{
+		// JSON
+		"toJSON":     ToJSON,
+		"prettyJSON": PrettyToJSON,
+		"fromJSON": func(data any) (any, error) {
+			var res any
+			err := UnmarshalJSON(data, &res)
+			return res, err
+		},
+
+		// Time
+		"now":              Now,
+		"parseTime":        ParseTime,
+		"formatTime":       FormatTime,
+		"addTime":          AddTime,
+		"duration":         Duration,
+		"describeDuration": DescribeDuration,
+
+		// Logic
+		"split":     Split,
+		"splitArgs": SplitArgs,
+		"joinArgs":  JoinArgs,
+	})
+}