Allow to completely disable logging.

server/logger.ts

@@ -5,90 +5,106 @@ function procConsole() {
     return process.console;
 }
 
-function init(): void {
-    const app = require('./app').app;
-    const config = require('./config').config;
+const noopTaggedLogger: TaggedLogger = {
+    debug(...args: any): void {},
+    info(...args: any): void {},
+    warn(...args: any): void {},
+    error(...args: any): void {},
+    profile(...args: any): void {},
+};
 
-    // Hack to allow proper logging of Error.
-    Object.defineProperty(Error.prototype, 'message', {
-        configurable: true,
-        enumerable: true
-    });
-    Object.defineProperty(Error.prototype, 'stack', {
-        configurable: true,
-        enumerable: true
-    });
+class ActivatableLogger implements Logger {
+    private enabled: boolean = false;
 
+    init(): void {
+        const app = require('./app').app;
+        const config = require('./config').config;
 
-    const scribe = require('scribe-js')({
-        rootPath: config.server.logging.directory,
-    });
+        const enabled = config.server.logging.enabled;
+        this.enabled = enabled;
 
-    function addLogger(name: string, color: string, active: boolean) {
-        if (active) {
-            procConsole().addLogger(name, color, {
-                logInConsole: false
-            });
-        } else {
-            // @ts-ignore
-            procConsole()[name] = function () {
-                this._reset(); // forget tags, etc. for this logging event
-            };
+        // Hack to allow proper logging of Error.
+        Object.defineProperty(Error.prototype, 'message', {
+            configurable: true,
+            enumerable: true
+        });
+        Object.defineProperty(Error.prototype, 'stack', {
+            configurable: true,
+            enumerable: true
+        });
+
+        const scribe = require('scribe-js')({
+            rootPath: config.server.logging.directory,
+        });
+
+        function addLogger(name: string, color: string, active: boolean) {
+            if (enabled && active) {
+                procConsole().addLogger(name, color, {
+                    logInConsole: false
+                });
+            } else {
+                // @ts-ignore
+                procConsole()[name] = function () {
+                    this._reset(); // forget tags, etc. for this logging event
+                };
+            }
         }
-    }
 
-    addLogger('debug', 'grey', config.server.logging.debug);
-    addLogger('profile', 'blue', config.server.logging.profile);
+        addLogger('debug', 'grey', config.server.logging.debug);
+        addLogger('profile', 'blue', config.server.logging.profile);
 
-    if (config.server.logging.logRequests) {
-        app.use(scribe.express.logger());
-    }
-    if (config.server.internal.active) {
-        const prefix = config.server.rootPath === '/' ? '' : config.server.rootPath;
-        app.use(prefix + '/internal/logs', scribe.webPanel());
-    }
-
-    // Hack to allow correct logging of node.js Error objects.
-    // See: https://github.com/bluejamesbond/Scribe.js/issues/70
-    Object.defineProperty(Error.prototype, 'toJSON', {
-        configurable: true,
-        value: function () {
-            const alt: {[key: string]: any} = {};
-            const storeKey = (key: string)  => {
-                alt[key] = this[key];
-            };
-            Object.getOwnPropertyNames(this).forEach(storeKey, this);
-            return alt;
+        if (enabled && config.server.logging.logRequests) {
+            app.use(scribe.express.logger());
+        }
+        if (config.server.internal.active) {
+            const prefix = config.server.rootPath === '/' ? '' : config.server.rootPath;
+            app.use(prefix + '/internal/logs', scribe.webPanel());
         }
-    });
 
-    // @ts-ignore
-    for (const key of Object.keys(procConsole())) {
+        // Hack to allow correct logging of node.js Error objects.
+        // See: https://github.com/bluejamesbond/Scribe.js/issues/70
+        Object.defineProperty(Error.prototype, 'toJSON', {
+            configurable: true,
+            value: function () {
+                const alt: {[key: string]: any} = {};
+                const storeKey = (key: string)  => {
+                    alt[key] = this[key];
+                };
+                Object.getOwnPropertyNames(this).forEach(storeKey, this);
+                return alt;
+            }
+        });
+
         // @ts-ignore
-        module.exports[key] = procConsole()[key];
+        for (const key of Object.keys(procConsole())) {
+            // @ts-ignore
+            module.exports[key] = enabled ? procConsole()[key] : (...args: any) => {};
+        }
+    }
+
+    tag(...tags: any): TaggedLogger {
+        if (this.enabled) {
+            return {
+                debug(...args: any): void {
+                    procConsole().tag(...tags).debug(...args);
+                },
+                info(...args: any): void {
+                    procConsole().tag(...tags).info(...args);
+                },
+                warn(...args: any): void {
+                    procConsole().tag(...tags).warn(...args);
+                },
+                error(...args: any): void {
+                    procConsole().tag(...tags).error(...args);
+                },
+                profile(...args: any): void {
+                    procConsole().tag(...tags).profile(...args);
+                },
+            }
+        } else {
+            return noopTaggedLogger;
+        }
     }
 }
 
-const logger: Logger = {
-    init,
-    tag(...tags): TaggedLogger {
-        return {
-            debug(...args: any): void {
-                procConsole().tag(...tags).debug(...args);
-            },
-            info(...args: any): void {
-                procConsole().tag(...tags).info(...args);
-            },
-            warn(...args: any): void {
-                procConsole().tag(...tags).warn(...args);
-            },
-            error(...args: any): void {
-                procConsole().tag(...tags).error(...args);
-            },
-            profile(...args: any): void {
-                procConsole().tag(...tags).profile(...args);
-            },
-        }
-    }
-};
-export default logger;
+export default new ActivatableLogger() as Logger;