usb - npm Package Compare versions

Comparing version 1.8.1 to 1.9.0

CHANGELOG.md

 # Changelog
 
+## [1.9.0] - 2021-11-08
+
+### Changed
+- Changed libusb dependency to upstream v1.0.23 - [`453`](https://github.com/node-usb/node-usb/pull/453) ([Rob Moran](https://github.com/thegecko))
+
 ## [1.8.1] - 2021-11-08
@@ -4,0 +9,0 @@

package.json

 {
   "name": "usb",
   "description": "Library to access USB devices",
-  "version": "1.8.1",
+  "version": "1.9.0",
   "engines": {
@@ -6,0 +6,0 @@ "node": ">=10.16.0"

usb.js

 var usb = exports = module.exports = require('node-gyp-build')(__dirname);
-var events = require('events')
-var util = require('util')
+var events = require('events');
+var util = require('util');
 
@@ -513,2 +513,41 @@ var isBuffer = function(obj) {
 
+// Polling mechanism for discovering device changes until this is fixed:
+// https://github.com/libusb/libusb/issues/86
+exports._pollTimeout = 500;
+var hotplugSupported = usb._getLibusbCapability(usb.LIBUSB_CAP_HAS_HOTPLUG) > 0;
+var pollingHotplug = false;
+var pollDevices = [];
+function pollHotplug(start) {
+	if (start) {
+		pollingHotplug = true;
+	} else if (!pollingHotplug) {
+		return;
+	}
+
+	var devices = usb.getDeviceList();
+
+	if (!start) {
+		// Find attached devices
+		for (var device of devices) {
+			var found = pollDevices.find(item => item.deviceAddress === device.deviceAddress);
+			if (!found) {
+				usb.emit('attach', device);
+			}
+		}
+
+		// Find detached devices
+		for (var device of pollDevices) {
+			var found = devices.find(item => item.deviceAddress === device.deviceAddress);
+			if (!found) {
+				usb.emit('detach', device);
+			}
+		}
+	}
+
+	pollDevices = devices;
+	setTimeout(() => {
+		pollHotplug();
+	}, exports._pollTimeout);
+}
+
 var hotplugListeners = 0;
@@ -518,3 +557,7 @@ exports.on('newListener', function(name) {
 	if (++hotplugListeners === 1) {
-		usb._enableHotplugEvents();
+		if (hotplugSupported) {
+			usb._enableHotplugEvents();
+		} else {
+			pollHotplug(true);
+		}
 	}
@@ -526,4 +569,8 @@ });
 	if (--hotplugListeners === 0) {
-		usb._disableHotplugEvents();
+		if (hotplugSupported) {
+			usb._disableHotplugEvents();
+		} else {
+			pollingHotplug = false;
+		}
 	}
 });

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Improved metrics

Total package byte prevSize

5073463

increased by6.02%

Number of package files

223

increased by14.95%

Lines of code

492

increased by9.33%

Worsened metrics

Number of low license alerts

9

increased by28.57%

License quality

60

decreased by-14.29%

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