improve: Now returning "0s" for 0 ms or invalid input

Signed-off-by: Jaid <jaid.jsx@gmail.com>

Author: Jaid

src/index.js

@@ -2,16 +2,7 @@
 
 import humanizeDuration from "humanize-duration"
 
-/**
- * @function
- * @param {number} milliseconds
- * @returns {string} Formatted duration
- * @example
- * import readableMs from "readable-ms"
- * const result = readableMs(3021)
- * result === "3s 21ms"
- */
-export default humanizeDuration.humanizer({
+const humanizer = humanizeDuration.humanizer({
   units: ["h", "m", "s", "ms"],
   spacer: "",
   delimiter: " ",
@@ -24,4 +15,23 @@ export default humanizeDuration.humanizer({
       ms: () => "ms",
     },
   },
-})
+})
+
+/**
+ * @function
+ * @param {number} milliseconds
+ * @returns {string} Formatted duration
+ * @example
+ * import readableMs from "readable-ms"
+ * const result = readableMs(3021)
+ * result === "3s 21ms"
+ * const result2 = readableMs(0)
+ * result2 === "0s"
+ */
+export default ms => {
+  if (Number.isFinite(ms) && ms !== 0) {
+    return humanizer(ms)
+  } else {
+    return "0s"
+  }
+}

test/test.js

@@ -8,6 +8,7 @@ const indexModule = (process.env.MAIN ? path.resolve(process.env.MAIN) : path.jo
 const {default: readableMs} = indexModule
 
 it("should run", () => {
-  const result = readableMs(3021)
-  expect(result).toBe("3s 21ms")
+  expect(readableMs(3021)).toBe("3s 21ms")
+  expect(readableMs(0)).toBe("0s")
+  expect(readableMs()).toBe("0s")
 })