.github/dependabot.yml

@@ -1,8 +1,8 @@
 version: 2
 updates:
-- package-ecosystem: npm
-  directory: "/"
-  schedule:
-    interval: daily
-    time: "13:00"
-  open-pull-requests-limit: 10
+  - package-ecosystem: npm
+    directory: "/"
+    schedule:
+      interval: monthly
+      time: "13:00"
+    open-pull-requests-limit: 10

.github/workflows/test.yml

@@ -11,11 +11,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [18.x, 20.x]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm ci

README.md

@@ -47,16 +47,17 @@ serialize({
     fn   : function echo(arg) { return arg; },
     re   : /([^\s]+)/g,
     big  : BigInt(10),
+    url  : new URL('https://example.com/'),
 });
 ```
 
 The above will produce the following string output:
 
 ```js
-'{"str":"string","num":0,"obj":{"foo":"foo"},"arr":[1,2,3],"bool":true,"nil":null,"undef":undefined,"inf":Infinity,"date":new Date("2016-04-28T22:02:17.000Z"),"map":new Map([["hello","world"]]),"set":new Set([123,456]),"fn":function echo(arg) { return arg; },"re":new RegExp("([^\\\\s]+)", "g"),"big":BigInt("10")}'
+'{"str":"string","num":0,"obj":{"foo":"foo"},"arr":[1,2,3],"bool":true,"nil":null,"undef":undefined,"inf":Infinity,"date":new Date("2016-04-28T22:02:17.000Z"),"map":new Map([["hello","world"]]),"set":new Set([123,456]),"fn":function echo(arg) { return arg; },"re":new RegExp("([^\\\\s]+)", "g"),"big":BigInt("10"),"url":new URL("https://example.com/")}'
 ```
 
-Note: to produced a beautified string, you can pass an optional second argument to `serialize()` to define the number of spaces to be used for the indentation.
+Note: to produce a beautified string, you can pass an optional second argument to `serialize()` to define the number of spaces to be used for the indentation.
 
 ### Automatic Escaping of HTML Characters
 

index.js

@@ -83,7 +83,7 @@ module.exports = function serialize(obj, options) {
             deleteFunctions(value);
         }
 
-        if (!value && value !== undefined) {
+        if (!value && value !== undefined && value !== BigInt(0)) {
             return value;
         }
 
@@ -258,7 +258,7 @@ module.exports = function serialize(obj, options) {
         }
 
         if (type === 'L') {
-            return "new URL(\"" + urls[valueIndex].toString() + "\")"; 
+            return "new URL(" + serialize(urls[valueIndex].toString(), options) + ")";
         }
 
         var fn = functions[valueIndex];