Update checked-in dependencies

node_modules/debug/src/common.js

@@ -12,16 +12,12 @@ function setup(env) {
 	createDebug.enable = enable;
 	createDebug.enabled = enabled;
 	createDebug.humanize = require('ms');
+	createDebug.destroy = destroy;
 
 	Object.keys(env).forEach(key => {
 		createDebug[key] = env[key];
 	});
 
-	/**
-	* Active `debug` instances.
-	*/
-	createDebug.instances = [];
-
 	/**
 	* The currently active debug mode names, and names to skip.
 	*/
@@ -63,6 +59,9 @@ function setup(env) {
 	*/
 	function createDebug(namespace) {
 		let prevTime;
+		let enableOverride = null;
+		let namespacesCache;
+		let enabledCache;
 
 		function debug(...args) {
 			// Disabled?
@@ -92,7 +91,7 @@ function setup(env) {
 			args[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {
 				// If we encounter an escaped % then don't increase the array index
 				if (match === '%%') {
-					return match;
+					return '%';
 				}
 				index++;
 				const formatter = createDebug.formatters[format];
@@ -115,33 +114,38 @@ function setup(env) {
 		}
 
 		debug.namespace = namespace;
-		debug.enabled = createDebug.enabled(namespace);
 		debug.useColors = createDebug.useColors();
-		debug.color = selectColor(namespace);
-		debug.destroy = destroy;
+		debug.color = createDebug.selectColor(namespace);
 		debug.extend = extend;
-		// Debug.formatArgs = formatArgs;
-		// debug.rawLog = rawLog;
+		debug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.
 
-		// env-specific initialization logic for debug instances
+		Object.defineProperty(debug, 'enabled', {
+			enumerable: true,
+			configurable: false,
+			get: () => {
+				if (enableOverride !== null) {
+					return enableOverride;
+				}
+				if (namespacesCache !== createDebug.namespaces) {
+					namespacesCache = createDebug.namespaces;
+					enabledCache = createDebug.enabled(namespace);
+				}
+
+				return enabledCache;
+			},
+			set: v => {
+				enableOverride = v;
+			}
+		});
+
+		// Env-specific initialization logic for debug instances
 		if (typeof createDebug.init === 'function') {
 			createDebug.init(debug);
 		}
 
-		createDebug.instances.push(debug);
-
 		return debug;
 	}
 
-	function destroy() {
-		const index = createDebug.instances.indexOf(this);
-		if (index !== -1) {
-			createDebug.instances.splice(index, 1);
-			return true;
-		}
-		return false;
-	}
-
 	function extend(namespace, delimiter) {
 		const newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
 		newDebug.log = this.log;
@@ -157,6 +161,7 @@ function setup(env) {
 	*/
 	function enable(namespaces) {
 		createDebug.save(namespaces);
+		createDebug.namespaces = namespaces;
 
 		createDebug.names = [];
 		createDebug.skips = [];
@@ -179,11 +184,6 @@ function setup(env) {
 				createDebug.names.push(new RegExp('^' + namespaces + '$'));
 			}
 		}
-
-		for (i = 0; i < createDebug.instances.length; i++) {
-			const instance = createDebug.instances[i];
-			instance.enabled = createDebug.enabled(instance.namespace);
-		}
 	}
 
 	/**
@@ -258,6 +258,14 @@ function setup(env) {
 		return val;
 	}
 
+	/**
+	* XXX DO NOT USE. This is a temporary stub function.
+	* XXX It WILL be removed in the next major release.
+	*/
+	function destroy() {
+		console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
+	}
+
 	createDebug.enable(createDebug.load());
 
 	return createDebug;