nodejs
diff --git a/‎lib/events.js‎
Lines changed: 8 additions & 6 deletions b/‎lib/events.js‎
Lines changed: 8 additions & 6 deletions
diff --git a/‎lib/internal/readline/interface.js‎
Lines changed: 1 addition & 1 deletion b/‎lib/internal/readline/interface.js‎
Lines changed: 1 addition & 1 deletion
@@ -1053,8 +1053,8 @@ function eventTargetAgnosticAddListener(emitter, name, listener, flags) {
  * @param {{
  *    signal: AbortSignal;
  *    close?: string[];
- *    highWatermark?: number,
- *    lowWatermark?: number
+ *    highWaterMark?: number,
+ *    lowWaterMark?: number
  *   }} [options]
  * @returns {AsyncIterator}
  */
@@ -1065,10 +1065,12 @@ function on(emitter, event, options = kEmptyObject) {
   validateAbortSignal(signal, 'options.signal');
   if (signal?.aborted)
     throw new AbortError(undefined, { cause: signal?.reason });
-  const highWatermark = options.highWatermark ?? NumberMAX_SAFE_INTEGER;
-  validateInteger(highWatermark, 'options.highWatermark', 1);
-  const lowWatermark = options.lowWatermark ?? 1;
-  validateInteger(lowWatermark, 'options.lowWatermark', 1);
+  // Support both highWaterMark and highWatermark for backward compatibility
+  const highWatermark = options.highWaterMark ?? options.highWatermark ?? NumberMAX_SAFE_INTEGER;
+  validateInteger(highWatermark, 'options.highWaterMark', 1);
+  // Support both lowWaterMark and lowWatermark for backward compatibility
+  const lowWatermark = options.lowWaterMark ?? options.lowWatermark ?? 1;
+  validateInteger(lowWatermark, 'options.lowWaterMark', 1);
 
   // Preparing controlling queues and variables
   FixedQueue ??= require('internal/fixed_queue');
 
@@ -1359,7 +1359,7 @@ class Interface extends InterfaceConstructor {
       this[kLineObjectStream] = EventEmitter.on(
         this, 'line', {
           close: ['close'],
-          highWatermark: 1024,
+          highWaterMark: 1024,
           [kFirstEventParam]: true,
         });
     }
Original file line number	Diff line number	Diff line change
@@ -1359,7 +1359,7 @@ class Interface extends InterfaceConstructor {
1359	1359	this[kLineObjectStream] = EventEmitter.on(
1360	1360	this, 'line', {
1361	1361	close: ['close'],
1362		- highWatermark: 1024,
	1362	+ highWaterMark: 1024,
1363	1363	[kFirstEventParam]: true,
1364	1364	});
1365	1365	}