Changes to logging

chapter09/src/index.js

@@ -4,13 +4,5 @@ import ReactDOM from "react-dom";
 import App from "./App.routing.auth";
 import registerServiceWorker from "./registerServiceWorker";
 
-import { log } from "./logging";
-log.error(`Attempting login for user XXX`, "SERVICE:LOGIN");
-log.verbose("Doing render", "FORM:INITIAL");
-log.info("Reporting problem", "SERVICE:ERROR_STORE");
-log.warn("Delay too long");
-log.info({ key: 22, data: "FK" }, "SERVICE:LOGIN");
-log.verbose("Successful login", "SERVICE:LOGIN");
-
 ReactDOM.render(<App />, document.getElementById("root"));
 registerServiceWorker();

chapter09/src/index.with.logging.js

@@ -0,0 +1,25 @@
+import React from "react";
+import ReactDOM from "react-dom";
+
+import App from "./App.routing.auth";
+import registerServiceWorker from "./registerServiceWorker";
+
+import { log } from "./logging";
+log.error("myapp:SERVICE:LOGIN", `Attempt`, { user: "FK", pass: "who?" });
+log.verbose("myapp:FORM:INITIAL", "Doing render");
+log.info(
+    "myapp:SERVICE:ERROR_STORE",
+    "Reporting problem",
+    "Something wrong",
+    404
+);
+log.warn("myapp:SERVICE:LOGIN");
+log.info("myapp:SERVICE:GETDATE", "Success", {
+    day: 22,
+    month: 9,
+    year: 60
+});
+log.verbose("myapp:SERVICE:LOGIN", "Successful login");
+
+ReactDOM.render(<App />, document.getElementById("root"));
+registerServiceWorker();

chapter09/src/logging/index.js

@@ -2,7 +2,6 @@
 
 import debug from "debug";
 
-const YOUR_LOGS = "myapp"; // common namespace
 const WHAT_TO_LOG = "myapp:SERVICE:*"; // change this to suit your needs
 
 let log;
@@ -16,31 +15,38 @@ if (process.env.NODE_ENV === "development") {
     const VERBOSE_COLOR = "green";
     const DEBUG_COLOR = "gray";
 
+    // CHANGE TO: COLOR, TOPIC, MESSAGE, ...EXTRA)
+
     log = {
-        logMessage(color: string, message: string, topic: string = "-") {
+        logMessage(
-            const logger = debug(`${YOUR_LOGS}:${topic}`);
+            color: string,
+            topic: string,
+            message: any = "--",
+            ...rest: any
+        ) {
+            const logger = debug(topic);
             logger.color = color;
-            logger(message);
+            logger(message, ...rest);
         },
 
-        error(message: any, topic?: string) {
+        error(topic: string, ...args: any) {
-            this.logMessage(ERROR_COLOR, message, topic);
+            this.logMessage(ERROR_COLOR, topic, ...args);
         },
 
-        warn(message: any, topic?: string) {
+        warn(topic: string, ...args: any) {
-            this.logMessage(WARN_COLOR, message, topic);
+            this.logMessage(WARN_COLOR, topic, ...args);
         },
 
-        info(message: any, topic?: string) {
+        info(topic: string, ...args: any) {
-            this.logMessage(INFO_COLOR, message, topic);
+            this.logMessage(INFO_COLOR, topic, ...args);
         },
 
-        verbose(message: any, topic?: string) {
+        verbose(topic: string, ...args: any) {
-            this.logMessage(VERBOSE_COLOR, message, topic);
+            this.logMessage(VERBOSE_COLOR, topic, ...args);
         },
 
-        debug(message: any, topic?: string) {
+        debug(topic: string, ...args: any) {
-            this.logMessage(DEBUG_COLOR, message, topic);
+            this.logMessage(DEBUG_COLOR, topic, ...args);
         }
     };
 } else {