fix(transform): Transform data and primirives correctly, fixes #394

package.json

@@ -1,6 +1,6 @@
 {
   "name": "electron-log",
-  "version": "5.1.0-beta.1",
+  "version": "5.1.0-beta.2",
   "description": "Just a simple logging module for your Electron application",
   "main": "src/index.js",
   "browser": "src/renderer/index.js",

src/node/transforms/__specs__/object.spec.js

@@ -18,24 +18,29 @@ describe('transform/object', () => {
 
   describe('serialize', () => {
     it('should serialize object', () => {
-      expect(serialize(null, { a: 1 })).toEqual({ a: 1 });
+      expect(serialize('', { a: 1 })).toEqual({ a: 1 });
     });
 
     it('should serialize errors', () => {
-      expect(serialize(null, new Error('test'))).toMatch('Error: test\n');
+      expect(serialize('', new Error('test'))).toMatch('Error: test\n');
     });
 
     it('should serialize functions', () => {
-      expect(serialize(null, () => 1)).toEqual('[function] () => 1');
+      expect(serialize('', () => 1)).toEqual('[function] () => 1');
+    });
+
+    it('should serialize Date', () => {
+      expect(serialize('', new Date('2000-01-01T00:00:00.000Z')))
+        .toEqual('2000-01-01T00:00:00.000Z');
     });
 
     it('should serialize set', () => {
-      expect(serialize(null, new Set([1]))).toEqual([1]);
+      expect(serialize('', new Set([1]))).toEqual([1]);
     });
 
     it('should serialize map', () => {
       if (Object.fromEntries) {
-        expect(serialize(null, new Map([['a', 1]]))).toEqual({ a: 1 });
+        expect(serialize('', new Map([['a', 1]]))).toEqual({ a: 1 });
       }
     });
   });

src/node/transforms/object.js

@@ -121,6 +121,10 @@ function serialize(key, value, options = {}) {
     return `[function] ${value.toString()}`;
   }
 
+  if (value instanceof Date) {
+    return value.toISOString();
+  }
+
   if (serializeMapAndSet && value instanceof Map && Object.fromEntries) {
     return Object.fromEntries(value);
   }

src/renderer/lib/transports/ipc.js

@@ -9,20 +9,27 @@ function ipcTransportRendererFactory(logger) {
     depth: 5,
 
     serializeFn(data, { depth = 5, seen = new WeakSet() } = {}) {
-      if (depth < 1) {
-        return `[${typeof data}]`;
+      if (seen.has(data)) {
+        return '[Circular]';
       }
 
-      if (seen.has(data)) {
-        return data;
+      if (depth < 1) {
+        if (isPrimitive(data)) {
+          return data;
+        }
+
+        if (Array.isArray(data)) {
+          return '[Array]';
+        }
+
+        return `[${typeof data}]`;
       }
 
       if (['function', 'symbol'].includes(typeof data)) {
         return data.toString();
       }
 
-      // Primitive types (including null and undefined)
-      if (Object(data) !== data) {
+      if (isPrimitive(data)) {
         return data;
       }
 
@@ -39,6 +46,10 @@ function ipcTransportRendererFactory(logger) {
         ));
       }
 
+      if (data instanceof Date) {
+        return data.toISOString();
+      }
+
       if (data instanceof Error) {
         return data.stack;
       }
@@ -99,3 +110,12 @@ function ipcTransportRendererFactory(logger) {
     }
   }
 }
+
+/**
+ * Is type primitive, including null and undefined
+ * @param {any} value
+ * @returns {boolean}
+ */
+function isPrimitive(value) {
+  return Object(value) !== value;
+}