feat(tyme/dur): add dur package as separate module

dur/parse.go

@@ -0,0 +1,33 @@
+package dur
+
+import (
+	"fmt"
+	"time"
+)
+
+const floatSecond = float64(time.Second)
+
+// Parse parses given interface to a Duration.
+//
+// If the interface is a string, it will be parsed using time.Parse. If
+// the interface is a int or float64, it will be parsed as a number of seconds.
+func Parse(x interface{}) (Duration, error) {
+	var d Duration
+	switch value := x.(type) {
+	case string:
+		td, err := time.ParseDuration(value)
+		if err != nil {
+			return 0, err
+		}
+
+		d = Duration(td)
+	case float64:
+		d = Duration(time.Duration(value * floatSecond))
+	case int:
+		d = Duration(time.Duration(value) * time.Second)
+	default:
+		return 0, fmt.Errorf("time: invalid duration %+v", x)
+	}
+
+	return d, nil
+}