Add formatting for array results

package.json

@@ -1,6 +1,6 @@
 {
   "name": "class-logger",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Boilerplate-free decorator-based class logging",
   "keywords": [
     "decorator",

src/formatter.service.spec.ts

@@ -125,6 +125,19 @@ describe(ClassLoggerFormatterService.name, () => {
       })
       expect(resStr).toBe(`. Res: ${stringify(resultObj)}`)
     })
+    test('returns stringified array result', () => {
+      const resultArr = [
+        {
+          test: 42,
+        },
+        34,
+      ]
+      const resStr = (classLoggerFormatterService as any).result({
+        ...dataEnd,
+        result: resultArr,
+      })
+      expect(resStr).toBe(`. Res: [${stringify(resultArr[0])}, ${resultArr[1]}]`)
+    })
     test('returns a serialized error result', () => {
       class TestError extends Error {}
       const result = new TestError()

src/formatter.service.ts

@@ -65,13 +65,13 @@ export class ClassLoggerFormatterService implements IClassLoggerFormatter {
     return error ? ' -> error' : ' -> done'
   }
   protected args({ args }: IClassLoggerFormatterStartData) {
-    return `. Args: [${this.argsToString(args)}]`
+    return `. Args: ${this.valueToString(args)}`
   }
   protected classInstance({ classInstance }: IClassLoggerFormatterStartData) {
     return `. Class instance: ${this.classInstanceToString(classInstance)}`
   }
   protected result({ result }: IClassLoggerFormatterEndData) {
-    return `. Res: ${this.resultToString(result)}`
+    return `. Res: ${this.valueToString(result)}`
   }
   protected final() {
     return '.'
@@ -91,16 +91,17 @@ export class ClassLoggerFormatterService implements IClassLoggerFormatter {
     }
     return stringify(classInsanceFiltered)
   }
-  protected argsToString(args: any[]) {
-    return args.map((arg) => (typeof arg === 'object' ? stringify(arg) : arg.toString())).join(', ')
-  }
-  protected resultToString(res: any) {
+  protected valueToString(res: any): string {
     if (typeof res !== 'object') {
       return res.toString()
     }
     if (res instanceof Error) {
       res = this.errorFormat(res)
     }
+    if (Array.isArray(res)) {
+      const arrayWithStringifiedElements = res.map(this.valueToString)
+      return `[${arrayWithStringifiedElements.join(', ')}]`
+    }
     return stringify(res)
   }