Add better Buffer and Date support with Tests, also fix path ti types. Fix #178

Author: terehov

package.json

@@ -15,7 +15,7 @@
   },
   "main": "./dist/nodejs/cjs/index.js",
   "module": "./dist/nodejs/esm/index.js",
-  "types": "./dist/nodejs/types/index.d.ts",
+  "types": "./dist/types/index.d.ts",
   "browser": {
     "tslog": "./dist/browser/index.js",
     "util": false,

src/BaseLogger.ts

@@ -1,4 +1,4 @@
-import { getMeta, getErrorTrace, transportFormatted, transportJSON, prettyFormatLogObj, IMeta, isError } from "./runtime/nodejs";
+import { getMeta, getErrorTrace, transportFormatted, transportJSON, prettyFormatLogObj, IMeta, isError, isBuffer } from "./runtime/nodejs";
 import { formatTemplate } from "./formatTemplate";
 import { formatNumberAddZeros } from "./formatNumberAddZeros";
 import { ISettingsParam, ISettings, ILogObjMeta, ILogObj, IErrorObject } from "./interfaces";
@@ -233,10 +233,9 @@ export class BaseLogger<LogObj> {
 
   private _toLogObj(args: unknown[], clonedLogObj: LogObj = {} as LogObj): LogObj {
     args = args?.map((arg) => (isError(arg) ? this._toErrorObject(arg as Error) : arg));
-
     if (this.settings.argumentsArrayName == null) {
-      if (args.length === 1) {
-        clonedLogObj = typeof args[0] === "object" && !Array.isArray(args[0]) ? { ...args[0], ...clonedLogObj } : { 0: args[0], ...clonedLogObj };
+      if (args.length === 1 && !Array.isArray(args[0]) && isBuffer(args[0]) !== true && !(args[0] instanceof Date)) {
+        clonedLogObj = typeof args[0] === "object" ? { ...args[0], ...clonedLogObj } : { 0: args[0], ...clonedLogObj };
       } else {
         clonedLogObj = { ...clonedLogObj, ...args };
       }

src/runtime/browser/index.ts

@@ -172,3 +172,7 @@ export function transportFormatted<LogObj>(logMetaMarkup: string, logArgs: unkno
 export function transportJSON<LogObj>(json: LogObj & ILogObjMeta): void {
   console.log(JSON.stringify(json, null, 2));
 }
+
+export function isBuffer(arg: unknown) {
+  return undefined;
+}

src/runtime/nodejs/index.ts

@@ -162,3 +162,7 @@ export function transportJSON<LogObj>(json: LogObj & ILogObjMeta): void {
     );
   }
 }
+
+export function isBuffer(arg: unknown) {
+  return Buffer.isBuffer(arg);
+}

tests/Nodejs/4_json_Log_Types.test.ts

@@ -41,6 +41,16 @@ describe("JSON: Log Types", () => {
     3,`);
   });
 
+  test("Buffer", (): void => {
+    const logger = new Logger({ type: "json" });
+    const buffer = Buffer.from("foo");
+    const log1 = logger.log(1234, "testLevel", buffer);
+    expect(getConsoleLog()).toContain(`"Buffer"`);
+    expect(log1?.["0"]).toBe(buffer);
+    const log2 = logger.log(1234, "testLevel", "1", buffer);
+    expect(log2?.["1"]).toBe(buffer);
+  });
+
   test("Object", (): void => {
     const logger = new Logger({ type: "json" });
     logger.log(1234, "testLevel", { test: true, nested: { 1: false } });
@@ -52,6 +62,15 @@ describe("JSON: Log Types", () => {
   "_meta": {`);
   });
 
+  test("Date", (): void => {
+    const logger = new Logger({ type: "json" });
+    const date = new Date(0);
+    const log1 = logger.log(1234, "testLevel", date);
+    console.log("***" + log1?.["0"]);
+    expect(log1?.["0"]).toBe(date);
+    expect(getConsoleLog()).toContain(`"1970-01-01T00:00:00.000Z"`);
+  });
+
   test("String, Object", (): void => {
     const logger = new Logger({ type: "json" });
     logger.log(1234, "testLevel", "test", { test: true, nested: { 1: false } });

tests/Nodejs/5_pretty_Log_Types.test.ts

@@ -49,6 +49,15 @@ describe("Pretty: Log Types", () => {
     expect(getConsoleLog()).toContain("\n]");
   });
 
+  test("Buffer", (): void => {
+    const logger = new Logger({ type: "pretty" });
+    const buffer = Buffer.from("foo");
+    logger.log(1234, "testLevel", buffer);
+    expect(getConsoleLog()).toContain(`<Buffer 66 6f 6f>`);
+    logger.log(1234, "testLevel", "1", buffer);
+    expect(getConsoleLog()).toContain(`1 <Buffer 66 6f 6f>`);
+  });
+
   test("Object", (): void => {
     const logger = new Logger({ type: "pretty" });
     logger.log(1234, "testLevel", { test: true, nested: { 1: false } });
@@ -58,6 +67,13 @@ describe("Pretty: Log Types", () => {
 }`);
   });
 
+  test("Date", (): void => {
+    const logger = new Logger({ type: "pretty" });
+    const date = new Date(0);
+    logger.log(1234, "testLevel", date);
+    expect(getConsoleLog()).toContain("1970-01-01T00:00:00.000Z");
+  });
+
   test("String, Object", (): void => {
     const logger = new Logger({ type: "pretty" });
     logger.log(1234, "testLevel", "test", { test: true, nested: { 1: false } });