Merge pull request #1374 from aellerton/master

Idempotent logging on browser

lib/clusteringBrowser.js

@@ -0,0 +1,19 @@
+/* istanbul ignore file */
+// This is used in browsers only and is designed to allow the rest of
+// log4js to continue as if `clustering.js` is in use.
+const isMaster = () => true;
+
+const listeners = [];
+
+const sendToListeners = (logEvent) => {
+  listeners.forEach((l) => l(logEvent));
+};
+
+module.exports = {
+  onlyOnMaster: (fn, notMaster) => (isMaster() ? fn() : notMaster),
+  isMaster,
+  send: sendToListeners,
+  onMessage: (listener) => {
+    listeners.push(listener);
+  },
+};

package.json

@@ -73,7 +73,13 @@
     "typescript": "^4.9.5"
   },
   "browser": {
-    "os": false
+    "os": false,
+    "streamroller": false,
+    "./lib/clustering.js": "./lib/clusteringBrowser.js",
+    "./lib/appenders/dateFile.js": "./lib/appenders/ignoreBrowser.js",
+    "./lib/appenders/file.js": "./lib/appenders/ignoreBrowser.js",
+    "./lib/appenders/fileSync.js": "./lib/appenders/ignoreBrowser.js",
+    "./lib/appenders/multiFile.js": "./lib/appenders/ignoreBrowser.js"
   },
   "prettier": {
     "trailingComma": "es5",