Explain error handling Boolean vs function

.devcontainer/devcontainer.json

@@ -0,0 +1,7 @@
+{
+  "tasks": {
+    "build": "npm install",
+    "test": "npm install && npm test",
+    "launch": "node index.js"
+  }
+}

README.md

@@ -54,6 +54,16 @@ Handle errors in underlying streams and output them to console.
  * `false` - error handler will not be attached.
  * `true` - default error handler will be attached.
 
+### Explanation of error handling
+
+The difference between using the default `true` Boolean for the error handler and using a custom function is in how errors are handled and logged.
+
+* The default `true` Boolean uses the `defaultErrorHandler` in `index.js` to log errors without stopping the stream.
+* A custom function with `this.emit('end')` logs errors and ends the stream, allowing it to continue.
+* A custom function provides more control over error handling behavior.
+* The default handler is simpler but less flexible.
+* Both options attach error handlers to the stream's `on('error')` event.
+
 ### plumber.stop()
 
 This method will return default behaviour for pipeline after it was piped.

index.js

@@ -39,6 +39,10 @@ function defaultErrorHandler(error) {
 	}
 }
 
+// The difference between the default `true` Boolean and a custom function for the error handler:
+// - The default handler logs errors without stopping the stream.
+// - A custom function can log errors and end the stream, allowing it to continue.
+
 function plumber(opts) {
 	opts = opts || {};