diff --git a/.eslintrc.json b/.eslintrc.json
index 6d6839d6..f24799a5 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,6 +1,6 @@
 {
-	"extends": ["eslint:recommended", "plugin:prettier/recommended"],
-	"plugins": ["prettier"],
+	"extends": ["eslint:recommended", "plugin:prettier/recommended", "plugin:jsdoc/recommended"],
+	"plugins": ["prettier", "jsdoc"],
 	"env": {
 		"browser": true,
 		"es6": true,
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 05446f80..8a904d51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,11 +18,13 @@ _This release is scheduled to be released on 2020-10-01._
 - Add lithuanian language.
 - Added support in weatherforecast for OpenWeather onecall API.
 - Added config option to calendar-icons for recurring- and fullday-events
+- Added eslint-plugin for jsdoc comments
 
 ### Updated
 
 - Change incorrect weather.js default properties.
 - Cleaned up newsfeed module.
+- Cleaned up jsdoc comments.
 
 ### Deleted
 
diff --git a/clientonly/index.js b/clientonly/index.js
index 7d1c4fe3..88454d93 100644
--- a/clientonly/index.js
+++ b/clientonly/index.js
@@ -4,10 +4,19 @@
 (function () {
 	var config = {};
 
-	// Helper function to get server address/hostname from either the commandline or env
+	/**
+	 * Helper function to get server address/hostname from either the commandline or env
+	 */
 	function getServerAddress() {
-		// Helper function to get command line parameters
-		// Assumes that a cmdline parameter is defined with `--key [value]`
+		/**
+		 * Get command line parameters
+		 * Assumes that a cmdline parameter is defined with `--key [value]`
+		 *
+		 * @param {string} key key to look for at the command line
+		 * @param {string} defaultValue value if no key is given at the command line
+		 *
+		 * @returns {string} the value of the parameter
+		 */
 		function getCommandLineParameter(key, defaultValue = undefined) {
 			var index = process.argv.indexOf(`--${key}`);
 			var value = index > -1 ? process.argv[index + 1] : undefined;
@@ -23,10 +32,17 @@
 		config["tls"] = process.argv.indexOf("--use-tls") > 0;
 	}
 
+	/**
+	 * Gets the config from the specified server url
+	 *
+	 * @param {string} url location where the server is running.
+	 *
+	 * @returns {Promise} the config
+	 */
 	function getServerConfig(url) {
 		// Return new pending promise
 		return new Promise((resolve, reject) => {
-			// Select http or https module, depending on reqested url
+			// Select http or https module, depending on requested url
 			const lib = url.startsWith("https") ? require("https") : require("http");
 			const request = lib.get(url, (response) => {
 				var configData = "";
@@ -47,6 +63,12 @@
 		});
 	}
 
+	/**
+	 * Print a message to the console in case of errors
+	 *
+	 * @param {string} [message] error message to print
+	 * @param {number} code error code for the exit call
+	 */
 	function fail(message, code = 1) {
 		if (message !== undefined && typeof message === "string") {
 			console.log(message);
diff --git a/js/app.js b/js/app.js
index b1fcc9bb..64844269 100644
--- a/js/app.js
+++ b/js/app.js
@@ -40,16 +40,19 @@ process.on("uncaughtException", function (err) {
 	Log.error("If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues");
 });
 
-/* App - The core app.
+/**
+ * The core app.
+ *
+ * @class
  */
 var App = function () {
 	var nodeHelpers = [];
 
-	/* loadConfig(callback)
-	 * Loads the config file. combines it with the defaults,
-	 * and runs the callback with the found config as argument.
+	/**
+	 * Loads the config file. Combines it with the defaults,  and runs the
+	 * callback with the found config as argument.
 	 *
-	 * argument callback function - The callback function.
+	 * @param {Function} callback Function to be called after loading the config
 	 */
 	var loadConfig = function (callback) {
 		Log.log("Loading config ...");
@@ -80,6 +83,12 @@ var App = function () {
 		}
 	};
 
+	/**
+	 * Checks the config for deprecated options and throws a warning in the logs
+	 * if it encounters one option from the deprecated.js list
+	 *
+	 * @param {object} userConfig The user config
+	 */
 	var checkDeprecatedOptions = function (userConfig) {
 		var deprecated = require(global.root_path + "/js/deprecated.js");
 		var deprecatedOptions = deprecated.configs;
@@ -96,10 +105,11 @@ var App = function () {
 		}
 	};
 
-	/* loadModule(module)
+	/**
 	 * Loads a specific module.
 	 *
-	 * argument module string - The name of the module (including subpath).
+	 * @param {string} module The name of the module (including subpath).
+	 * @param {Function} callback Function to be called after loading
 	 */
 	var loadModule = function (module, callback) {
 		var elements = module.split("/");
@@ -144,10 +154,11 @@ var App = function () {
 		}
 	};
 
-	/* loadModules(modules)
+	/**
 	 * Loads all modules.
 	 *
-	 * argument module string - The name of the module (including subpath).
+	 * @param {Module[]} modules All modules to be loaded
+	 * @param {Function} callback Function to be called after loading
 	 */
 	var loadModules = function (modules, callback) {
 		Log.log("Loading module helpers ...");
@@ -169,11 +180,14 @@ var App = function () {
 		loadNextModule();
 	};
 
-	/* cmpVersions(a,b)
+	/**
 	 * Compare two semantic version numbers and return the difference.
 	 *
-	 * argument a string - Version number a.
-	 * argument a string - Version number b.
+	 * @param {string} a Version number a.
+	 * @param {string} b Version number b.
+	 *
+	 * @returns {number} A positive number if a is larger than b, a negative
+	 * number if a is smaller and 0 if they are the same
 	 */
 	function cmpVersions(a, b) {
 		var i, diff;
@@ -191,12 +205,13 @@ var App = function () {
 		return segmentsA.length - segmentsB.length;
 	}
 
-	/* start(callback)
-	 * This methods starts the core app.
-	 * It loads the config, then it loads all modules.
-	 * When it's done it executes the callback with the config as argument.
+	/**
+	 * Start the core app.
 	 *
-	 * argument callback function - The callback function.
+	 * It loads the config, then it loads all modules. When it's done it
+	 * executes the callback with the config as argument.
+	 *
+	 * @param {Function} callback Function to be called after start
 	 */
 	this.start = function (callback) {
 		loadConfig(function (c) {
@@ -234,9 +249,10 @@ var App = function () {
 		});
 	};
 
-	/* stop()
-	 * This methods stops the core app.
-	 * This calls each node_helper's STOP() function, if it exists.
+	/**
+	 * Stops the core app. This calls each node_helper's STOP() function, if it
+	 * exists.
+	 *
 	 * Added to fix #1056
 	 */
 	this.stop = function () {
@@ -248,7 +264,8 @@ var App = function () {
 		}
 	};
 
-	/* Listen for SIGINT signal and call stop() function.
+	/**
+	 * Listen for SIGINT signal and call stop() function.
 	 *
 	 * Added to fix #1056
 	 * Note: this is only used if running `server-only`. Otherwise
@@ -263,7 +280,9 @@ var App = function () {
 		process.exit(0);
 	});
 
-	/* We also need to listen to SIGTERM signals so we stop everything when we are asked to stop by the OS.
+	/**
+	 * Listen to SIGTERM signals so we can stop everything when we
+	 * are asked to stop by the OS.
 	 */
 	process.on("SIGTERM", () => {
 		Log.log("[SIGTERM] Received. Shutting down server...");
diff --git a/js/check_config.js b/js/check_config.js
index cfd56824..7ed6ea96 100644
--- a/js/check_config.js
+++ b/js/check_config.js
@@ -16,9 +16,11 @@ const config = require(rootPath + "/.eslintrc.json");
 const Log = require(rootPath + "/js/logger.js");
 const Utils = require(rootPath + "/js/utils.js");
 
-/* getConfigFile()
- * Return string with path of configuration file
+/**
+ * Returns a string with path of configuration file.
  * Check if set by environment variable MM_CONFIG_FILE
+ *
+ * @returns {string} path and filename of the config file
  */
 function getConfigFile() {
 	// FIXME: This function should be in core. Do you want refactor me ;) ?, be good!
@@ -29,6 +31,9 @@ function getConfigFile() {
 	return configFileName;
 }
 
+/**
+ * Checks the config file using eslint.
+ */
 function checkConfigFile() {
 	const configFileName = getConfigFile();
 
@@ -38,7 +43,7 @@ function checkConfigFile() {
 		throw new Error("No config file present!");
 	}
 
-	// check permission
+	// Check permission
 	try {
 		fs.accessSync(configFileName, fs.F_OK);
 	} catch (e) {
diff --git a/js/class.js b/js/class.js
index f52ac405..9c46a894 100644
--- a/js/class.js
+++ b/js/class.js
@@ -57,7 +57,9 @@
 					: prop[name];
 		}
 
-		// The dummy class constructor
+		/**
+		 * The dummy class constructor
+		 */
 		function Class() {
 			// All construction is actually done in the init method
 			if (!initializing && this.init) {
@@ -78,8 +80,13 @@
 	};
 })();
 
-//Define the clone method for later use.
-//Helper Method
+/**
+ * Define the clone method for later use. Helper Method.
+ *
+ * @param {object} obj Object to be cloned
+ *
+ * @returns {object} the cloned object
+ */
 function cloneObject(obj) {
 	if (obj === null || typeof obj !== "object") {
 		return obj;
diff --git a/js/electron.js b/js/electron.js
index 0978cd0d..216dee48 100644
--- a/js/electron.js
+++ b/js/electron.js
@@ -15,6 +15,9 @@ const BrowserWindow = electron.BrowserWindow;
 // be closed automatically when the JavaScript object is garbage collected.
 let mainWindow;
 
+/**
+ *
+ */
 function createWindow() {
 	app.commandLine.appendSwitch("autoplay-policy", "no-user-gesture-required");
 	var electronOptionsDefaults = {
diff --git a/js/loader.js b/js/loader.js
index bc376bd9..4ba75578 100644
--- a/js/loader.js
+++ b/js/loader.js
@@ -15,7 +15,7 @@ var Loader = (function () {
 
 	/* Private Methods */
 
-	/* loadModules()
+	/**
 	 * Loops thru all modules and requests load for every module.
 	 */
 	var loadModules = function () {
@@ -43,7 +43,7 @@ var Loader = (function () {
 		loadNextModule();
 	};
 
-	/* startModules()
+	/**
 	 * Loops thru all modules and requests start for every module.
 	 */
 	var startModules = function () {
@@ -56,19 +56,19 @@ var Loader = (function () {
 		MM.modulesStarted(moduleObjects);
 	};
 
-	/* getAllModules()
+	/**
 	 * Retrieve list of all modules.
 	 *
-	 * return array - module data as configured in config
+	 * @returns {object[]} module data as configured in config
 	 */
 	var getAllModules = function () {
 		return config.modules;
 	};
 
-	/* getModuleData()
+	/**
 	 * Generate array with module information including module paths.
 	 *
-	 * return array - Module information.
+	 * @returns {object[]} Module information.
 	 */
 	var getModuleData = function () {
 		var modules = getAllModules();
@@ -106,11 +106,11 @@ var Loader = (function () {
 		return moduleFiles;
 	};
 
-	/* loadModule(module)
-	 * Load modules via ajax request and create module objects.
+	/**
+	 * Load modules via ajax request and create module objects.s
 	 *
-	 * argument callback function - Function called when done.
-	 * argument module object - Information about the module we want to load.
+	 * @param {object} module Information about the module we want to load.
+	 * @param {Function} callback Function called when done.
 	 */
 	var loadModule = function (module, callback) {
 		var url = module.path + "/" + module.file;
@@ -136,12 +136,12 @@ var Loader = (function () {
 		}
 	};
 
-	/* bootstrapModule(module, mObj)
+	/**
 	 * Bootstrap modules by setting the module data and loading the scripts & styles.
 	 *
-	 * argument module object - Information about the module we want to load.
-	 * argument mObj object - Modules instance.
-	 * argument callback function - Function called when done.
+	 * @param {object} module Information about the module we want to load.
+	 * @param {Module} mObj Modules instance.
+	 * @param {Function} callback Function called when done.
 	 */
 	var bootstrapModule = function (module, mObj, callback) {
 		Log.info("Bootstrapping module: " + module.name);
@@ -161,11 +161,11 @@ var Loader = (function () {
 		});
 	};
 
-	/* loadFile(fileName)
+	/**
 	 * Load a script or stylesheet by adding it to the dom.
 	 *
-	 * argument fileName string - Path of the file we want to load.
-	 * argument callback function - Function called when done.
+	 * @param {string} fileName Path of the file we want to load.
+	 * @param {Function} callback Function called when done.
 	 */
 	var loadFile = function (fileName, callback) {
 		var extension = fileName.slice((Math.max(0, fileName.lastIndexOf(".")) || Infinity) + 1);
@@ -215,20 +215,20 @@ var Loader = (function () {
 
 	/* Public Methods */
 	return {
-		/* loadModules()
+		/**
 		 * Load all modules as defined in the config.
 		 */
 		loadModules: function () {
 			loadModules();
 		},
 
-		/* loadFile()
+		/**
 		 * Load a file (script or stylesheet).
 		 * Prevent double loading and search for files in the vendor folder.
 		 *
-		 * argument fileName string - Path of the file we want to load.
-		 * argument module Module Object - the module that calls the loadFile function.
-		 * argument callback function - Function called when done.
+		 * @param {string} fileName Path of the file we want to load.
+		 * @param {Module} module The module that calls the loadFile function.
+		 * @param {Function} callback Function called when done.
 		 */
 		loadFile: function (fileName, module, callback) {
 			if (loadedFiles.indexOf(fileName.toLowerCase()) !== -1) {
diff --git a/js/main.js b/js/main.js
index cbf2566f..a02e6496 100644
--- a/js/main.js
+++ b/js/main.js
@@ -11,9 +11,8 @@ var MM = (function () {
 
 	/* Private Methods */
 
-	/* createDomObjects()
-	 * Create dom objects for all modules that
-	 * are configured for a specific position.
+	/**
+	 * Create dom objects for all modules that are configured for a specific position.
 	 */
 	var createDomObjects = function () {
 		var domCreationPromises = [];
@@ -65,10 +64,12 @@ var MM = (function () {
 		});
 	};
 
-	/* selectWrapper(position)
+	/**
 	 * Select the wrapper dom object for a specific position.
 	 *
-	 * argument position string - The name of the position.
+	 * @param {string} position The name of the position.
+	 *
+	 * @returns {HTMLElement} the wrapper element
 	 */
 	var selectWrapper = function (position) {
 		var classes = position.replace("_", " ");
@@ -81,13 +82,13 @@ var MM = (function () {
 		}
 	};
 
-	/* sendNotification(notification, payload, sender)
+	/**
 	 * Send a notification to all modules.
 	 *
-	 * argument notification string - The identifier of the notification.
-	 * argument payload mixed - The payload of the notification.
-	 * argument sender Module - The module that sent the notification.
-	 * argument sendTo Module - The module to send the notification to. (optional)
+	 * @param {string} notification The identifier of the notification.
+	 * @param {*} payload The payload of the notification.
+	 * @param {Module} sender The module that sent the notification.
+	 * @param {Module} [sendTo] The (optional) module to send the notification to.
 	 */
 	var sendNotification = function (notification, payload, sender, sendTo) {
 		for (var m in modules) {
@@ -98,13 +99,13 @@ var MM = (function () {
 		}
 	};
 
-	/* updateDom(module, speed)
+	/**
 	 * Update the dom for a specific module.
 	 *
-	 * argument module Module - The module that needs an update.
-	 * argument speed Number - The number of microseconds for the animation. (optional)
+	 * @param {Module} module The module that needs an update.
+	 * @param {number} [speed] The (optional) number of microseconds for the animation.
 	 *
-	 * return Promise - Resolved when the dom is fully updated.
+	 * @returns {Promise} Resolved when the dom is fully updated.
 	 */
 	var updateDom = function (module, speed) {
 		return new Promise(function (resolve) {
@@ -126,15 +127,15 @@ var MM = (function () {
 		});
 	};
 
-	/* updateDomWithContent(module, speed, newHeader, newContent)
+	/**
 	 * Update the dom with the specified content
 	 *
-	 * argument module Module - The module that needs an update.
-	 * argument speed Number - The number of microseconds for the animation. (optional)
-	 * argument newHeader String - The new header that is generated.
-	 * argument newContent Domobject - The new content that is generated.
+	 * @param {Module} module The module that needs an update.
+	 * @param {number} [speed] The (optional) number of microseconds for the animation.
+	 * @param {string} newHeader The new header that is generated.
+	 * @param {HTMLElement} newContent The new content that is generated.
 	 *
-	 * return Promise - Resolved when the module dom has been updated.
+	 * @returns {Promise} Resolved when the module dom has been updated.
 	 */
 	var updateDomWithContent = function (module, speed, newHeader, newContent) {
 		return new Promise(function (resolve) {
@@ -165,14 +166,14 @@ var MM = (function () {
 		});
 	};
 
-	/* moduleNeedsUpdate(module, newContent)
+	/**
 	 * Check if the content has changed.
 	 *
-	 * argument module Module - The module to check.
-	 * argument newHeader String - The new header that is generated.
-	 * argument newContent Domobject - The new content that is generated.
+	 * @param {Module} module The module to check.
+	 * @param {string} newHeader The new header that is generated.
+	 * @param {HTMLElement} newContent The new content that is generated.
 	 *
-	 * return bool - Does the module need an update?
+	 * @returns {boolean} True if the module need an update, false otherwise
 	 */
 	var moduleNeedsUpdate = function (module, newHeader, newContent) {
 		var moduleWrapper = document.getElementById(module.identifier);
@@ -197,12 +198,12 @@ var MM = (function () {
 		return headerNeedsUpdate || contentNeedsUpdate;
 	};
 
-	/* moduleNeedsUpdate(module, newContent)
+	/**
 	 * Update the content of a module on screen.
 	 *
-	 * argument module Module - The module to check.
-	 * argument newHeader String - The new header that is generated.
-	 * argument newContent Domobject - The new content that is generated.
+	 * @param {Module} module The module to check.
+	 * @param {string} newHeader The new header that is generated.
+	 * @param {HTMLElement} newContent The new content that is generated.
 	 */
 	var updateModuleContent = function (module, newHeader, newContent) {
 		var moduleWrapper = document.getElementById(module.identifier);
@@ -223,12 +224,13 @@ var MM = (function () {
 		}
 	};
 
-	/* hideModule(module, speed, callback)
+	/**
 	 * Hide the module.
 	 *
-	 * argument module Module - The module to hide.
-	 * argument speed Number - The speed of the hide animation.
-	 * argument callback function - Called when the animation is done.
+	 * @param {Module} module The module to hide.
+	 * @param {number} speed The speed of the hide animation.
+	 * @param {Function} callback Called when the animation is done.
+	 * @param {object} [options] Optional settings for the hide method.
 	 */
 	var hideModule = function (module, speed, callback, options) {
 		options = options || {};
@@ -268,12 +270,13 @@ var MM = (function () {
 		}
 	};
 
-	/* showModule(module, speed, callback)
+	/**
 	 * Show the module.
 	 *
-	 * argument module Module - The module to show.
-	 * argument speed Number - The speed of the show animation.
-	 * argument callback function - Called when the animation is done.
+	 * @param {Module} module The module to show.
+	 * @param {number} speed The speed of the show animation.
+	 * @param {Function} callback Called when the animation is done.
+	 * @param {object} [options] Optional settings for the show method.
 	 */
 	var showModule = function (module, speed, callback, options) {
 		options = options || {};
@@ -327,7 +330,7 @@ var MM = (function () {
 		}
 	};
 
-	/* updateWrapperStates()
+	/**
 	 * Checks for all positions if it has visible content.
 	 * If not, if will hide the position to prevent unwanted margins.
 	 * This method should be called by the show and hide methods.
@@ -356,8 +359,8 @@ var MM = (function () {
 		});
 	};
 
-	/* loadConfig()
-	 * Loads the core config and combines it with de system defaults.
+	/**
+	 * Loads the core config and combines it with the system defaults.
 	 */
 	var loadConfig = function () {
 		// FIXME: Think about how to pass config around without breaking tests
@@ -372,41 +375,41 @@ var MM = (function () {
 		/* eslint-enable */
 	};
 
-	/* setSelectionMethodsForModules()
+	/**
 	 * Adds special selectors on a collection of modules.
 	 *
-	 * argument modules array - Array of modules.
+	 * @param {Module[]} modules Array of modules.
 	 */
 	var setSelectionMethodsForModules = function (modules) {
-		/* withClass(className)
-		 * calls modulesByClass to filter modules with the specified classes.
+		/**
+		 * Filter modules with the specified classes.
 		 *
-		 * argument className string/array - one or multiple classnames. (array or space divided)
+		 * @param {string|string[]} className one or multiple classnames (array or space divided).
 		 *
-		 * return array - Filtered collection of modules.
+		 * @returns {Module[]} Filtered collection of modules.
 		 */
 		var withClass = function (className) {
 			return modulesByClass(className, true);
 		};
 
-		/* exceptWithClass(className)
-		 * calls modulesByClass to filter modules without the specified classes.
+		/**
+		 * Filter modules without the specified classes.
 		 *
-		 * argument className string/array - one or multiple classnames. (array or space divided)
+		 * @param {string|string[]} className one or multiple classnames (array or space divided).
 		 *
-		 * return array - Filtered collection of modules.
+		 * @returns {Module[]} Filtered collection of modules.
 		 */
 		var exceptWithClass = function (className) {
 			return modulesByClass(className, false);
 		};
 
-		/* modulesByClass(className, include)
-		 * filters a collection of modules based on classname(s).
+		/**
+		 * Filters a collection of modules based on classname(s).
 		 *
-		 * argument className string/array - one or multiple classnames. (array or space divided)
-		 * argument include boolean - if the filter should include or exclude the modules with the specific classes.
+		 * @param {string|string[]} className one or multiple classnames (array or space divided).
+		 * @param {boolean} include if the filter should include or exclude the modules with the specific classes.
 		 *
-		 * return array - Filtered collection of modules.
+		 * @returns {Module[]} Filtered collection of modules.
 		 */
 		var modulesByClass = function (className, include) {
 			var searchClasses = className;
@@ -431,12 +434,12 @@ var MM = (function () {
 			return newModules;
 		};
 
-		/* exceptModule(module)
+		/**
 		 * Removes a module instance from the collection.
 		 *
-		 * argument module Module object - The module instance to remove from the collection.
+		 * @param {object} module The module instance to remove from the collection.
 		 *
-		 * return array - Filtered collection of modules.
+		 * @returns {Module[]} Filtered collection of modules.
 		 */
 		var exceptModule = function (module) {
 			var newModules = modules.filter(function (mod) {
@@ -447,10 +450,10 @@ var MM = (function () {
 			return newModules;
 		};
 
-		/* enumerate(callback)
+		/**
 		 * Walks thru a collection of modules and executes the callback with the module as an argument.
 		 *
-		 * argument callback function - The function to execute with the module as an argument.
+		 * @param {Function} callback The function to execute with the module as an argument.
 		 */
 		var enumerate = function (callback) {
 			modules.map(function (module) {
@@ -475,7 +478,7 @@ var MM = (function () {
 	return {
 		/* Public Methods */
 
-		/* init()
+		/**
 		 * Main init method.
 		 */
 		init: function () {
@@ -488,10 +491,10 @@ var MM = (function () {
 			Loader.loadModules();
 		},
 
-		/* modulesStarted(moduleObjects)
+		/**
 		 * Gets called when all modules are started.
 		 *
-		 * argument moduleObjects array<Module> - All module instances.
+		 * @param {Module[]} moduleObjects All module instances.
 		 */
 		modulesStarted: function (moduleObjects) {
 			modules = [];
@@ -506,12 +509,12 @@ var MM = (function () {
 			createDomObjects();
 		},
 
-		/* sendNotification(notification, payload, sender)
+		/**
 		 * Send a notification to all modules.
 		 *
-		 * argument notification string - The identifier of the notification.
-		 * argument payload mixed - The payload of the notification.
-		 * argument sender Module - The module that sent the notification.
+		 * @param {string} notification The identifier of the notification.
+		 * @param {*} payload The payload of the notification.
+		 * @param {Module} sender The module that sent the notification.
 		 */
 		sendNotification: function (notification, payload, sender) {
 			if (arguments.length < 3) {
@@ -533,11 +536,11 @@ var MM = (function () {
 			sendNotification(notification, payload, sender);
 		},
 
-		/* updateDom(module, speed)
+		/**
 		 * Update the dom for a specific module.
 		 *
-		 * argument module Module - The module that needs an update.
-		 * argument speed Number - The number of microseconds for the animation. (optional)
+		 * @param {Module} module The module that needs an update.
+		 * @param {number} [speed] The number of microseconds for the animation.
 		 */
 		updateDom: function (module, speed) {
 			if (!(module instanceof Module)) {
@@ -549,36 +552,36 @@ var MM = (function () {
 			updateDom(module, speed);
 		},
 
-		/* getModules(module, speed)
+		/**
 		 * Returns a collection of all modules currently active.
 		 *
-		 * return array - A collection of all modules currently active.
+		 * @returns {Module[]} A collection of all modules currently active.
 		 */
 		getModules: function () {
 			setSelectionMethodsForModules(modules);
 			return modules;
 		},
 
-		/* hideModule(module, speed, callback)
+		/**
 		 * Hide the module.
 		 *
-		 * argument module Module - The module hide.
-		 * argument speed Number - The speed of the hide animation.
-		 * argument callback function - Called when the animation is done.
-		 * argument options object - Optional settings for the hide method.
+		 * @param {Module} module The module to hide.
+		 * @param {number} speed The speed of the hide animation.
+		 * @param {Function} callback Called when the animation is done.
+		 * @param {object} [options] Optional settings for the hide method.
 		 */
 		hideModule: function (module, speed, callback, options) {
 			module.hidden = true;
 			hideModule(module, speed, callback, options);
 		},
 
-		/* showModule(module, speed, callback)
+		/**
 		 * Show the module.
 		 *
-		 * argument module Module - The module show.
-		 * argument speed Number - The speed of the show animation.
-		 * argument callback function - Called when the animation is done.
-		 * argument options object - Optional settings for the hide method.
+		 * @param {Module} module The module to show.
+		 * @param {number} speed The speed of the show animation.
+		 * @param {Function} callback Called when the animation is done.
+		 * @param {object} [options] Optional settings for the show method.
 		 */
 		showModule: function (module, speed, callback, options) {
 			// do not change module.hidden yet, only if we really show it later
diff --git a/js/module.js b/js/module.js
index 4aa26a80..8bb5990e 100644
--- a/js/module.js
+++ b/js/module.js
@@ -2,9 +2,11 @@
 
 /* Magic Mirror
  * Module Blueprint.
+ * @typedef {Object} Module
  *
  * By Michael Teeuw https://michaelteeuw.nl
  * MIT Licensed.
+ *
  */
 var Module = Class.extend({
 	/*********************************************************
@@ -29,53 +31,55 @@ var Module = Class.extend({
 	// Use the nunjucksEnvironment() to get it.
 	_nunjucksEnvironment: null,
 
-	/* init()
-	 * Is called when the module is instantiated.
+	/**
+	 * Called when the module is instantiated.
 	 */
 	init: function () {
 		//Log.log(this.defaults);
 	},
 
-	/* start()
-	 * Is called when the module is started.
+	/**
+	 * Called when the module is started.
 	 */
 	start: function () {
 		Log.info("Starting module: " + this.name);
 	},
 
-	/* getScripts()
+	/**
 	 * Returns a list of scripts the module requires to be loaded.
 	 *
-	 * return Array<String> - An array with filenames.
+	 * @returns {string[]} An array with filenames.
 	 */
 	getScripts: function () {
 		return [];
 	},
 
-	/* getStyles()
+	/**
 	 * Returns a list of stylesheets the module requires to be loaded.
 	 *
-	 * return Array<String> - An array with filenames.
+	 * @returns {string[]} An array with filenames.
 	 */
 	getStyles: function () {
 		return [];
 	},
 
-	/* getTranslations()
+	/**
 	 * Returns a map of translation files the module requires to be loaded.
 	 *
-	 * return Map<String, String> - A map with langKeys and filenames.
+	 * return Map<String, String> -
+	 *
+	 * @returns {*} A map with langKeys and filenames.
 	 */
 	getTranslations: function () {
 		return false;
 	},
 
-	/* getDom()
-	 * This method generates the dom which needs to be displayed. This method is called by the Magic Mirror core.
+	/**
+	 * Generates the dom which needs to be displayed. This method is called by the Magic Mirror core.
 	 * This method can to be subclassed if the module wants to display info on the mirror.
 	 * Alternatively, the getTemplate method could be subclassed.
 	 *
-	 * return DomObject | Promise - The dom or a promise with the dom to display.
+	 * @returns {HTMLElement|Promise} The dom or a promise with the dom to display.
 	 */
 	getDom: function () {
 		var self = this;
@@ -105,46 +109,45 @@ var Module = Class.extend({
 		});
 	},
 
-	/* getHeader()
-	 * This method generates the header string which needs to be displayed if a user has a header configured for this module.
+	/**
+	 * Generates the header string which needs to be displayed if a user has a header configured for this module.
 	 * This method is called by the Magic Mirror core, but only if the user has configured a default header for the module.
 	 * This method needs to be subclassed if the module wants to display modified headers on the mirror.
 	 *
-	 * return string - The header to display above the header.
+	 * @returns {string} The header to display above the header.
 	 */
 	getHeader: function () {
 		return this.data.header;
 	},
 
-	/* getTemplate()
-	 * This method returns the template for the module which is used by the default getDom implementation.
+	/**
+	 * Returns the template for the module which is used by the default getDom implementation.
 	 * This method needs to be subclassed if the module wants to use a template.
 	 * It can either return a template sting, or a template filename.
 	 * If the string ends with '.html' it's considered a file from within the module's folder.
 	 *
-	 * return string - The template string of filename.
+	 * @returns {string} The template string of filename.
 	 */
 	getTemplate: function () {
 		return '<div class="normal">' + this.name + '</div><div class="small dimmed">' + this.identifier + "</div>";
 	},
 
-	/* getTemplateData()
-	 * This method returns the data to be used in the template.
+	/**
+	 * Returns the data to be used in the template.
 	 * This method needs to be subclassed if the module wants to use a custom data.
 	 *
-	 * return Object
+	 * @returns {object} The data for the template
 	 */
 	getTemplateData: function () {
 		return {};
 	},
 
-	/* notificationReceived(notification, payload, sender)
-	 * This method is called when a notification arrives.
-	 * This method is called by the Magic Mirror core.
+	/**
+	 * Called by the Magic Mirror core when a notification arrives.
 	 *
-	 * argument notification string - The identifier of the notification.
-	 * argument payload mixed - The payload of the notification.
-	 * argument sender Module - The module that sent the notification.
+	 * @param {string} notification The identifier of the notification.
+	 * @param {*} payload The payload of the notification.
+	 * @param {Module} sender The module that sent the notification.
 	 */
 	notificationReceived: function (notification, payload, sender) {
 		if (sender) {
@@ -154,11 +157,11 @@ var Module = Class.extend({
 		}
 	},
 
-	/** nunjucksEnvironment()
+	/**
 	 * Returns the nunjucks environment for the current module.
 	 * The environment is checked in the _nunjucksEnvironment instance variable.
-
-	 * @returns Nunjucks Environment
+	 *
+	 * @returns {object} The Nunjucks Environment
 	 */
 	nunjucksEnvironment: function () {
 		if (this._nunjucksEnvironment !== null) {
@@ -171,6 +174,7 @@ var Module = Class.extend({
 			trimBlocks: true,
 			lstripBlocks: true
 		});
+
 		this._nunjucksEnvironment.addFilter("translate", function (str) {
 			return self.translate(str);
 		});
@@ -178,25 +182,25 @@ var Module = Class.extend({
 		return this._nunjucksEnvironment;
 	},
 
-	/* socketNotificationReceived(notification, payload)
-	 * This method is called when a socket notification arrives.
+	/**
+	 * Called when a socket notification arrives.
 	 *
-	 * argument notification string - The identifier of the notification.
-	 * argument payload mixed - The payload of the notification.
+	 * @param {string} notification The identifier of the notification.
+	 * @param {*} payload The payload of the notification.
 	 */
 	socketNotificationReceived: function (notification, payload) {
 		Log.log(this.name + " received a socket notification: " + notification + " - Payload: " + payload);
 	},
 
-	/* suspend()
-	 * This method is called when a module is hidden.
+	/*
+	 * Called when the module is hidden.
 	 */
 	suspend: function () {
 		Log.log(this.name + " is suspended.");
 	},
 
-	/* resume()
-	 * This method is called when a module is shown.
+	/*
+	 * Called when the module is shown.
 	 */
 	resume: function () {
 		Log.log(this.name + " is resumed.");
@@ -206,10 +210,10 @@ var Module = Class.extend({
 	 * The methods below don"t need subclassing. *
 	 *********************************************/
 
-	/* setData(data)
+	/**
 	 * Set the module data.
 	 *
-	 * argument data object - Module data.
+	 * @param {Module} data The module data
 	 */
 	setData: function (data) {
 		this.data = data;
@@ -220,18 +224,20 @@ var Module = Class.extend({
 		this.setConfig(data.config);
 	},
 
-	/* setConfig(config)
+	/**
 	 * Set the module config and combine it with the module defaults.
 	 *
-	 * argument config object - Module config.
+	 * @param {object} config The combined module config.
 	 */
 	setConfig: function (config) {
 		this.config = Object.assign({}, this.defaults, config);
 	},
 
-	/* socket()
-	 * Returns a socket object. If it doesn't exist, it"s created.
+	/**
+	 * Returns a socket object. If it doesn't exist, it's created.
 	 * It also registers the notification callback.
+	 *
+	 * @returns {MMSocket} a socket object
 	 */
 	socket: function () {
 		if (typeof this._socket === "undefined") {
@@ -246,40 +252,39 @@ var Module = Class.extend({
 		return this._socket;
 	},
 
-	/* file(file)
+	/**
 	 * Retrieve the path to a module file.
 	 *
-	 * argument file string - Filename.
-	 *
-	 * return string - File path.
+	 * @param {string} file Filename
+	 * @returns {string} the file path
 	 */
 	file: function (file) {
 		return (this.data.path + "/" + file).replace("//", "/");
 	},
 
-	/* loadStyles()
+	/**
 	 * Load all required stylesheets by requesting the MM object to load the files.
 	 *
-	 * argument callback function - Function called when done.
+	 * @param {Function} callback Function called when done.
 	 */
 	loadStyles: function (callback) {
 		this.loadDependencies("getStyles", callback);
 	},
 
-	/* loadScripts()
+	/**
 	 * Load all required scripts by requesting the MM object to load the files.
 	 *
-	 * argument callback function - Function called when done.
+	 * @param {Function} callback Function called when done.
 	 */
 	loadScripts: function (callback) {
 		this.loadDependencies("getScripts", callback);
 	},
 
-	/* loadDependencies(funcName, callback)
+	/**
 	 * Helper method to load all dependencies.
 	 *
-	 * argument funcName string - Function name to call to get scripts or styles.
-	 * argument callback function - Function called when done.
+	 * @param {string} funcName Function name to call to get scripts or styles.
+	 * @param {Function} callback Function called when done.
 	 */
 	loadDependencies: function (funcName, callback) {
 		var self = this;
@@ -300,10 +305,10 @@ var Module = Class.extend({
 		loadNextDependency();
 	},
 
-	/* loadScripts()
-	 * Load all required scripts by requesting the MM object to load the files.
+	/**
+	 * Load all translations.
 	 *
-	 * argument callback function - Function called when done.
+	 * @param {Function} callback Function called when done.
 	 */
 	loadTranslations: function (callback) {
 		var self = this;
@@ -334,12 +339,13 @@ var Module = Class.extend({
 		}
 	},
 
-	/* translate(key, defaultValueOrVariables, defaultValue)
+	/**
 	 * Request the translation for a given key with optional variables and default value.
 	 *
-	 * argument key string - The key of the string to translate
-	 * argument defaultValueOrVariables string/object - The default value or variables for translating. (Optional)
-	 * argument defaultValue string - The default value with variables. (Optional)
+	 * @param {string} key The key of the string to translate
+	 * @param {string|object} [defaultValueOrVariables] The default value or variables for translating.
+	 * @param {string} [defaultValue] The default value with variables.
+	 * @returns {string} the translated key
 	 */
 	translate: function (key, defaultValueOrVariables, defaultValue) {
 		if (typeof defaultValueOrVariables === "object") {
@@ -348,41 +354,41 @@ var Module = Class.extend({
 		return Translator.translate(this, key) || defaultValueOrVariables || "";
 	},
 
-	/* updateDom(speed)
+	/**
 	 * Request an (animated) update of the module.
 	 *
-	 * argument speed Number - The speed of the animation. (Optional)
+	 * @param {number} [speed] The speed of the animation.
 	 */
 	updateDom: function (speed) {
 		MM.updateDom(this, speed);
 	},
 
-	/* sendNotification(notification, payload)
+	/**
 	 * Send a notification to all modules.
 	 *
-	 * argument notification string - The identifier of the notification.
-	 * argument payload mixed - The payload of the notification.
+	 * @param {string} notification The identifier of the notification.
+	 * @param {*} payload The payload of the notification.
 	 */
 	sendNotification: function (notification, payload) {
 		MM.sendNotification(notification, payload, this);
 	},
 
-	/* sendSocketNotification(notification, payload)
+	/**
 	 * Send a socket notification to the node helper.
 	 *
-	 * argument notification string - The identifier of the notification.
-	 * argument payload mixed - The payload of the notification.
+	 * @param {string} notification The identifier of the notification.
+	 * @param {*} payload The payload of the notification.
 	 */
 	sendSocketNotification: function (notification, payload) {
 		this.socket().sendNotification(notification, payload);
 	},
 
-	/* hideModule(module, speed, callback)
+	/**
 	 * Hide this module.
 	 *
-	 * argument speed Number - The speed of the hide animation.
-	 * argument callback function - Called when the animation is done.
-	 * argument options object - Optional settings for the hide method.
+	 * @param {number} speed The speed of the hide animation.
+	 * @param {Function} callback Called when the animation is done.
+	 * @param {object} [options] Optional settings for the hide method.
 	 */
 	hide: function (speed, callback, options) {
 		if (typeof callback === "object") {
@@ -405,12 +411,12 @@ var Module = Class.extend({
 		);
 	},
 
-	/* showModule(module, speed, callback)
+	/**
 	 * Show this module.
 	 *
-	 * argument speed Number - The speed of the show animation.
-	 * argument callback function - Called when the animation is done.
-	 * argument options object - Optional settings for the hide method.
+	 * @param {number} speed The speed of the show animation.
+	 * @param {Function} callback Called when the animation is done.
+	 * @param {object} [options] Optional settings for the show method.
 	 */
 	show: function (speed, callback, options) {
 		if (typeof callback === "object") {
@@ -451,11 +457,27 @@ Module.create = function (name) {
 	return new ModuleClass();
 };
 
-/* cmpVersions(a,b)
+Module.register = function (name, moduleDefinition) {
+	if (moduleDefinition.requiresVersion) {
+		Log.log("Check MagicMirror version for module '" + name + "' - Minimum version:  " + moduleDefinition.requiresVersion + " - Current version: " + window.version);
+		if (cmpVersions(window.version, moduleDefinition.requiresVersion) >= 0) {
+			Log.log("Version is ok!");
+		} else {
+			Log.log("Version is incorrect. Skip module: '" + name + "'");
+			return;
+		}
+	}
+	Log.log("Module registered: " + name);
+	Module.definitions[name] = moduleDefinition;
+};
+
+/**
  * Compare two semantic version numbers and return the difference.
  *
- * argument a string - Version number a.
- * argument a string - Version number b.
+ * @param {string} a Version number a.
+ * @param {string} b Version number b.
+ * @returns {number} A positive number if a is larger than b, a negative
+ * number if a is smaller and 0 if they are the same
  */
 function cmpVersions(a, b) {
 	var i, diff;
@@ -472,17 +494,3 @@ function cmpVersions(a, b) {
 	}
 	return segmentsA.length - segmentsB.length;
 }
-
-Module.register = function (name, moduleDefinition) {
-	if (moduleDefinition.requiresVersion) {
-		Log.log("Check MagicMirror version for module '" + name + "' - Minimum version:  " + moduleDefinition.requiresVersion + " - Current version: " + window.version);
-		if (cmpVersions(window.version, moduleDefinition.requiresVersion) >= 0) {
-			Log.log("Version is ok!");
-		} else {
-			Log.log("Version is incorrect. Skip module: '" + name + "'");
-			return;
-		}
-	}
-	Log.log("Module registered: " + name);
-	Module.definitions[name] = moduleDefinition;
-};
diff --git a/js/translator.js b/js/translator.js
index ee4e1051..0f4bc00a 100644
--- a/js/translator.js
+++ b/js/translator.js
@@ -7,11 +7,11 @@
  * MIT Licensed.
  */
 var Translator = (function () {
-	/* loadJSON(file, callback)
+	/**
 	 * Load a JSON file via XHR.
 	 *
-	 * argument file string - Path of the file we want to load.
-	 * argument callback function - Function called when done.
+	 * @param {string} file Path of the file we want to load.
+	 * @param {Function} callback Function called when done.
 	 */
 	function loadJSON(file, callback) {
 		var xhr = new XMLHttpRequest();
@@ -31,20 +31,27 @@ var Translator = (function () {
 		translations: {},
 		translationsFallback: {},
 
-		/* translate(module, key, variables)
+		/**
 		 * Load a translation for a given key for a given module.
 		 *
-		 * argument module Module - The module to load the translation for.
-		 * argument key string - The key of the text to translate.
-		 * argument variables - The variables to use within the translation template (optional)
+		 * @param {Module} module The module to load the translation for.
+		 * @param {string} key The key of the text to translate.
+		 * @param {object} variables The variables to use within the translation template (optional)
+		 * @returns {string} the translated key
 		 */
 		translate: function (module, key, variables) {
 			variables = variables || {}; //Empty object by default
 
-			// Combines template and variables like:
-			// template: "Please wait for {timeToWait} before continuing with {work}."
-			// variables: {timeToWait: "2 hours", work: "painting"}
-			// to: "Please wait for 2 hours before continuing with painting."
+			/**
+			 * Combines template and variables like:
+			 * template: "Please wait for {timeToWait} before continuing with {work}."
+			 * variables: {timeToWait: "2 hours", work: "painting"}
+			 * to: "Please wait for 2 hours before continuing with painting."
+			 *
+			 * @param {string} template Text with placeholder
+			 * @param {object} variables Variables for the placeholder
+			 * @returns {string} the template filled with the variables
+			 */
 			function createStringFromTemplate(template, variables) {
 				if (Object.prototype.toString.call(template) !== "[object String]") {
 					return template;
@@ -80,13 +87,13 @@ var Translator = (function () {
 			return key;
 		},
 
-		/* load(module, file, isFallback, callback)
+		/**
 		 * Load a translation file (json) and remember the data.
 		 *
-		 * argument module Module - The module to load the translation file for.
-		 * argument file string - Path of the file we want to load.
-		 * argument isFallback boolean - Flag to indicate fallback translations.
-		 * argument callback function - Function called when done.
+		 * @param {Module} module The module to load the translation file for.
+		 * @param {string} file Path of the file we want to load.
+		 * @param {boolean} isFallback Flag to indicate fallback translations.
+		 * @param {Function} callback Function called when done.
 		 */
 		load: function (module, file, isFallback, callback) {
 			if (!isFallback) {
@@ -110,10 +117,10 @@ var Translator = (function () {
 			}
 		},
 
-		/* loadCoreTranslations(lang)
+		/**
 		 * Load the core translations.
 		 *
-		 * argument lang String - The language identifier of the core language.
+		 * @param {string} lang The language identifier of the core language.
 		 */
 		loadCoreTranslations: function (lang) {
 			var self = this;
@@ -130,7 +137,7 @@ var Translator = (function () {
 			self.loadCoreTranslationsFallback();
 		},
 
-		/* loadCoreTranslationsFallback()
+		/**
 		 * Load the core translations fallback.
 		 * The first language defined in translations.js will be used.
 		 */
diff --git a/modules/default/alert/notificationFx.js b/modules/default/alert/notificationFx.js
index 61ba59d7..89034420 100644
--- a/modules/default/alert/notificationFx.js
+++ b/modules/default/alert/notificationFx.js
@@ -12,7 +12,11 @@
  */
 (function (window) {
 	/**
-	 * extend obj function
+	 * Extend one object with another one
+	 *
+	 * @param {object} a The object to extend
+	 * @param {object} b The object which extends the other, overwrites existing keys
+	 * @returns {object} The merged object
 	 */
 	function extend(a, b) {
 		for (let key in b) {
@@ -24,7 +28,10 @@
 	}
 
 	/**
-	 * NotificationFx function
+	 * NotificationFx constructor
+	 *
+	 * @param {object} options The configuration options
+	 * @class
 	 */
 	function NotificationFx(options) {
 		this.options = extend({}, this.options);
@@ -66,8 +73,7 @@
 	};
 
 	/**
-	 * init function
-	 * initialize and cache some vars
+	 * Initialize and cache some vars
 	 */
 	NotificationFx.prototype._init = function () {
 		// create HTML structure
@@ -95,7 +101,7 @@
 	};
 
 	/**
-	 * init events
+	 * Init events
 	 */
 	NotificationFx.prototype._initEvents = function () {
 		// dismiss notification by tapping on it if someone has a touchscreen
@@ -105,7 +111,7 @@
 	};
 
 	/**
-	 * show the notification
+	 * Show the notification
 	 */
 	NotificationFx.prototype.show = function () {
 		this.active = true;
@@ -115,7 +121,7 @@
 	};
 
 	/**
-	 * dismiss the notification
+	 * Dismiss the notification
 	 */
 	NotificationFx.prototype.dismiss = function () {
 		this.active = false;
@@ -144,7 +150,7 @@
 	};
 
 	/**
-	 * add to global namespace
+	 * Add to global namespace
 	 */
 	window.NotificationFx = NotificationFx;
 })(window);
diff --git a/modules/default/calendar/calendar.js b/modules/default/calendar/calendar.js
index 06026363..af804139 100755
--- a/modules/default/calendar/calendar.js
+++ b/modules/default/calendar/calendar.js
@@ -416,7 +416,7 @@ Module.register("calendar", {
 	 * it will a localeSpecification object with the system locale time format.
 	 *
 	 * @param {number} timeFormat Specifies either 12 or 24 hour time format
-	 * @returns {moment.LocaleSpecification}
+	 * @returns {moment.LocaleSpecification} formatted time
 	 */
 	getLocaleSpecification: function (timeFormat) {
 		switch (timeFormat) {
@@ -432,12 +432,11 @@ Module.register("calendar", {
 		}
 	},
 
-	/* hasCalendarURL(url)
-	 * Check if this config contains the calendar url.
+	/**
+	 * Checks if this config contains the calendar url.
 	 *
-	 * argument url string - Url to look for.
-	 *
-	 * return bool - Has calendar url
+	 * @param {string} url The calendar url
+	 * @returns {boolean} True if the calendar config contains the url, False otherwise
 	 */
 	hasCalendarURL: function (url) {
 		for (var c in this.config.calendars) {
@@ -450,10 +449,10 @@ Module.register("calendar", {
 		return false;
 	},
 
-	/* createEventList()
+	/**
 	 * Creates the sorted list of all events.
 	 *
-	 * return array - Array with events.
+	 * @returns {object[]} Array with events.
 	 */
 	createEventList: function () {
 		var events = [];
@@ -534,10 +533,12 @@ Module.register("calendar", {
 		return false;
 	},
 
-	/* createEventList(url)
+	/**
 	 * Requests node helper to add calendar url.
 	 *
-	 * argument url string - Url to add.
+	 * @param {string} url The calendar url to add
+	 * @param {object} auth The authentication method and credentials
+	 * @param {object} calendarConfig The config of the specific calendar
 	 */
 	addCalendar: function (url, auth, calendarConfig) {
 		this.sendSocketNotification("ADD_CALENDAR", {
@@ -556,12 +557,10 @@ Module.register("calendar", {
 	},
 
 	/**
-	 * symbolsForEvent(event)
 	 * Retrieves the symbols for a specific event.
 	 *
-	 * argument event object - Event to look for.
-	 *
-	 * return array - The Symbols
+	 * @param {object} event Event to look for.
+	 * @returns {string[]} The symbols
 	 */
 	symbolsForEvent: function (event) {
 		let symbols = this.getCalendarPropertyAsArray(event.url, "symbol", this.config.defaultSymbol);
@@ -586,82 +585,72 @@ Module.register("calendar", {
 	},
 
 	/**
-	 * symbolClassForUrl(url)
-	 * Retrieves the symbolClass for a specific url.
+	 * Retrieves the symbolClass for a specific calendar url.
 	 *
-	 * @param url string - Url to look for.
-	 *
-	 * @returns string
+	 * @param {string} url The calendar url
+	 * @returns {string} The class to be used for the symbols of the calendar
 	 */
 	symbolClassForUrl: function (url) {
 		return this.getCalendarProperty(url, "symbolClass", "");
 	},
 
 	/**
-	 * titleClassForUrl(url)
-	 * Retrieves the titleClass for a specific url.
+	 * Retrieves the titleClass for a specific calendar url.
 	 *
-	 * @param url string - Url to look for.
-	 *
-	 * @returns string
+	 * @param {string} url The calendar url
+	 * @returns {string} The class to be used for the title of the calendar
 	 */
 	titleClassForUrl: function (url) {
 		return this.getCalendarProperty(url, "titleClass", "");
 	},
 
 	/**
-	 * timeClassForUrl(url)
-	 * Retrieves the timeClass for a specific url.
+	 * Retrieves the timeClass for a specific calendar url.
 	 *
-	 * @param url string - Url to look for.
-	 *
-	 * @returns string
+	 * @param {string} url The calendar url
+	 * @returns {string} The class to be used for the time of the calendar
 	 */
 	timeClassForUrl: function (url) {
 		return this.getCalendarProperty(url, "timeClass", "");
 	},
 
-	/* calendarNameForUrl(url)
-	 * Retrieves the calendar name for a specific url.
+	/**
+	 * Retrieves the calendar name for a specific calendar url.
 	 *
-	 * argument url string - Url to look for.
-	 *
-	 * return string - The name of the calendar
+	 * @param {string} url The calendar url
+	 * @returns {string} The name of the calendar
 	 */
 	calendarNameForUrl: function (url) {
 		return this.getCalendarProperty(url, "name", "");
 	},
 
-	/* colorForUrl(url)
-	 * Retrieves the color for a specific url.
+	/**
+	 * Retrieves the color for a specific calendar url.
 	 *
-	 * argument url string - Url to look for.
-	 *
-	 * return string - The Color
+	 * @param {string} url The calendar url
+	 * @returns {string} The color
 	 */
 	colorForUrl: function (url) {
 		return this.getCalendarProperty(url, "color", "#fff");
 	},
 
-	/* countTitleForUrl(url)
-	 * Retrieves the name for a specific url.
+	/**
+	 * Retrieves the count title for a specific calendar url.
 	 *
-	 * argument url string - Url to look for.
-	 *
-	 * return string - The Symbol
+	 * @param {string} url The calendar url
+	 * @returns {string} The title
 	 */
 	countTitleForUrl: function (url) {
 		return this.getCalendarProperty(url, "repeatingCountTitle", this.config.defaultRepeatingCountTitle);
 	},
 
-	/* getCalendarProperty(url, property, defaultValue)
-	 * Helper method to retrieve the property for a specific url.
+	/**
+	 * Helper method to retrieve the property for a specific calendar url.
 	 *
-	 * argument url string - Url to look for.
-	 * argument property string - Property to look for.
-	 * argument defaultValue string - Value if property is not found.
-	 *
-	 * return string - The Property
+	 * @param {string} url The calendar url
+	 * @param {string} property The property to look for
+	 * @param {string} defaultValue The value if the property is not found
+	 * @returns {*} The property
 	 */
 	getCalendarProperty: function (url, property, defaultValue) {
 		for (var c in this.config.calendars) {
@@ -737,22 +726,27 @@ Module.register("calendar", {
 		}
 	},
 
-	/* capFirst(string)
+	/**
 	 * Capitalize the first letter of a string
-	 * Return capitalized string
+	 *
+	 * @param {string} string The string to capitalize
+	 * @returns {string} The capitalized string
 	 */
 	capFirst: function (string) {
 		return string.charAt(0).toUpperCase() + string.slice(1);
 	},
 
-	/* titleTransform(title)
+	/**
 	 * Transforms the title of an event for usage.
 	 * Replaces parts of the text as defined in config.titleReplace.
 	 * Shortens title based on config.maxTitleLength and config.wrapEvents
 	 *
-	 * argument title string - The title to transform.
-	 *
-	 * return string - The transformed title.
+	 * @param {string} title The title to transform.
+	 * @param {object} titleReplace Pairs of strings to be replaced in the title
+	 * @param {boolean} wrapEvents Wrap the text after the line has reached maxLength
+	 * @param {number} maxTitleLength The max length of the string
+	 * @param {number} maxTitleLines The max number of vertical lines before cutting event title
+	 * @returns {string} The transformed title.
 	 */
 	titleTransform: function (title, titleReplace, wrapEvents, maxTitleLength, maxTitleLines) {
 		for (var needle in titleReplace) {
@@ -771,7 +765,7 @@ Module.register("calendar", {
 		return title;
 	},
 
-	/* broadcastEvents()
+	/**
 	 * Broadcasts the events to all other modules for reuse.
 	 * The all events available in one array, sorted on startdate.
 	 */
diff --git a/modules/default/calendar/calendarfetcher.js b/modules/default/calendar/calendarfetcher.js
index 888830ba..033f73cb 100644
--- a/modules/default/calendar/calendarfetcher.js
+++ b/modules/default/calendar/calendarfetcher.js
@@ -6,9 +6,27 @@
  */
 const Log = require("../../../js/logger.js");
 const ical = require("ical");
-const moment = require("moment");
 const request = require("request");
 
+/**
+ * Moment date
+ *
+ * @external Moment
+ * @see {@link http://momentjs.com}
+ */
+const moment = require("moment");
+
+/**
+ *
+ * @param {string} url The url of the calendar to fetch
+ * @param {number} reloadInterval Time in ms the calendar is fetched again
+ * @param {string[]} excludedEvents An array of words / phrases from event titles that will be excluded from being shown.
+ * @param {number} maximumEntries The maximum number of events fetched.
+ * @param {number} maximumNumberOfDays The maximum number of days an event should be in the future.
+ * @param {object} auth The object containing options for authentication against the calendar.
+ * @param {boolean} includePastEvents If true events from the past maximumNumberOfDays will be fetched too
+ * @class
+ */
 const CalendarFetcher = function (url, reloadInterval, excludedEvents, maximumEntries, maximumNumberOfDays, auth, includePastEvents) {
 	const self = this;
 
@@ -18,7 +36,7 @@ const CalendarFetcher = function (url, reloadInterval, excludedEvents, maximumEn
 	let fetchFailedCallback = function () {};
 	let eventsReceivedCallback = function () {};
 
-	/* fetchCalendar()
+	/**
 	 * Initiates calendar fetch.
 	 */
 	const fetchCalendar = function () {
@@ -325,7 +343,7 @@ const CalendarFetcher = function (url, reloadInterval, excludedEvents, maximumEn
 		});
 	};
 
-	/* scheduleTimer()
+	/**
 	 * Schedule the timer for the next update.
 	 */
 	const scheduleTimer = function () {
@@ -335,12 +353,11 @@ const CalendarFetcher = function (url, reloadInterval, excludedEvents, maximumEn
 		}, reloadInterval);
 	};
 
-	/* isFullDayEvent(event)
+	/**
 	 * Checks if an event is a fullday event.
 	 *
-	 * argument event object - The event object to check.
-	 *
-	 * return bool - The event is a fullday event.
+	 * @param {object} event The event object to check.
+	 * @returns {boolean} True if the event is a fullday event, false otherwise
 	 */
 	const isFullDayEvent = function (event) {
 		if (event.start.length === 8 || event.start.dateOnly) {
@@ -358,14 +375,13 @@ const CalendarFetcher = function (url, reloadInterval, excludedEvents, maximumEn
 		return false;
 	};
 
-	/* timeFilterApplies()
+	/**
 	 * Determines if the user defined time filter should apply
 	 *
-	 * argument now Date - Date object using previously created object for consistency
-	 * argument endDate Moment - Moment object representing the event end date
-	 * argument filter string - The time to subtract from the end date to determine if an event should be shown
-	 *
-	 * return bool - The event should be filtered out
+	 * @param {Date} now Date object using previously created object for consistency
+	 * @param {Moment} endDate Moment object representing the event end date
+	 * @param {string} filter The time to subtract from the end date to determine if an event should be shown
+	 * @returns {boolean} True if the event should be filtered out, false otherwise
 	 */
 	const timeFilterApplies = function (now, endDate, filter) {
 		if (filter) {
@@ -380,12 +396,11 @@ const CalendarFetcher = function (url, reloadInterval, excludedEvents, maximumEn
 		return false;
 	};
 
-	/* getTitleFromEvent(event)
+	/**
 	 * Gets the title from the event.
 	 *
-	 * argument event object - The event object to check.
-	 *
-	 * return string - The title of the event, or "Event" if no title is found.
+	 * @param {object} event The event object to check.
+	 * @returns {string} The title of the event, or "Event" if no title is found.
 	 */
 	const getTitleFromEvent = function (event) {
 		let title = "Event";
@@ -416,14 +431,14 @@ const CalendarFetcher = function (url, reloadInterval, excludedEvents, maximumEn
 
 	/* public methods */
 
-	/* startFetch()
+	/**
 	 * Initiate fetchCalendar();
 	 */
 	this.startFetch = function () {
 		fetchCalendar();
 	};
 
-	/* broadcastItems()
+	/**
 	 * Broadcast the existing events.
 	 */
 	this.broadcastEvents = function () {
@@ -431,37 +446,37 @@ const CalendarFetcher = function (url, reloadInterval, excludedEvents, maximumEn
 		eventsReceivedCallback(self);
 	};
 
-	/* onReceive(callback)
+	/**
 	 * Sets the on success callback
 	 *
-	 * argument callback function - The on success callback.
+	 * @param {Function} callback The on success callback.
 	 */
 	this.onReceive = function (callback) {
 		eventsReceivedCallback = callback;
 	};
 
-	/* onError(callback)
+	/**
 	 * Sets the on error callback
 	 *
-	 * argument callback function - The on error callback.
+	 * @param {Function} callback The on error callback.
 	 */
 	this.onError = function (callback) {
 		fetchFailedCallback = callback;
 	};
 
-	/* url()
+	/**
 	 * Returns the url of this fetcher.
 	 *
-	 * return string - The url of this fetcher.
+	 * @returns {string} The url of this fetcher.
 	 */
 	this.url = function () {
 		return url;
 	};
 
-	/* events()
+	/**
 	 * Returns current available events for this fetcher.
 	 *
-	 * return array - The current available events for this fetcher.
+	 * @returns {object[]} The current available events for this fetcher.
 	 */
 	this.events = function () {
 		return events;
diff --git a/modules/default/calendar/node_helper.js b/modules/default/calendar/node_helper.js
index e731ca6c..862755a0 100644
--- a/modules/default/calendar/node_helper.js
+++ b/modules/default/calendar/node_helper.js
@@ -4,7 +4,6 @@
  * By Michael Teeuw https://michaelteeuw.nl
  * MIT Licensed.
  */
-
 const NodeHelper = require("node_helper");
 const validUrl = require("valid-url");
 const CalendarFetcher = require("./calendarfetcher.js");
@@ -24,12 +23,18 @@ module.exports = NodeHelper.create({
 		}
 	},
 
-	/* createFetcher(url, reloadInterval)
+	/**
 	 * Creates a fetcher for a new url if it doesn't exist yet.
 	 * Otherwise it reuses the existing one.
 	 *
-	 * attribute url string - URL of the news feed.
-	 * attribute reloadInterval number - Reload interval in milliseconds.
+	 * @param {string} url The url of the calendar
+	 * @param {number} fetchInterval How often does the calendar needs to be fetched in ms
+	 * @param {string[]} excludedEvents An array of words / phrases from event titles that will be excluded from being shown.
+	 * @param {number} maximumEntries The maximum number of events fetched.
+	 * @param {number} maximumNumberOfDays The maximum number of days an event should be in the future.
+	 * @param {object} auth The object containing options for authentication against the calendar.
+	 * @param {boolean} broadcastPastEvents If true events from the past maximumNumberOfDays will be included in event broadcasts
+	 * @param {string} identifier ID of the module
 	 */
 	createFetcher: function (url, fetchInterval, excludedEvents, maximumEntries, maximumNumberOfDays, auth, broadcastPastEvents, identifier) {
 		var self = this;
diff --git a/modules/default/clock/clock.js b/modules/default/clock/clock.js
index cfcd1e40..1c7109b6 100644
--- a/modules/default/clock/clock.js
+++ b/modules/default/clock/clock.js
@@ -152,6 +152,13 @@ Module.register("clock", {
 			timeWrapper.appendChild(periodWrapper);
 		}
 
+		/**
+		 * Format the time according to the config
+		 *
+		 * @param {object} config The config of the module
+		 * @param {object} time time to format
+		 * @returns {string} The formatted time string
+		 */
 		function formatTime(config, time) {
 			var formatString = hourSymbol + ":mm";
 			if (config.showPeriod && config.timeFormat !== 24) {
@@ -159,6 +166,7 @@ Module.register("clock", {
 			}
 			return moment(time).format(formatString);
 		}
+
 		if (this.config.showSunTimes) {
 			const sunTimes = SunCalc.getTimes(now, this.config.lat, this.config.lon);
 			const isVisible = now.isBetween(sunTimes.sunrise, sunTimes.sunset);
diff --git a/modules/default/newsfeed/newsfeed.js b/modules/default/newsfeed/newsfeed.js
index 3e26da4f..2ff02888 100644
--- a/modules/default/newsfeed/newsfeed.js
+++ b/modules/default/newsfeed/newsfeed.js
@@ -205,8 +205,8 @@ Module.register("newsfeed", {
 		return typeof this.newsItems[this.activeItem].url === "string" ? this.newsItems[this.activeItem].url : this.newsItems[this.activeItem].url.href;
 	},
 
-	/* registerFeeds()
-	 * registers the feeds to be used by the backend.
+	/**
+	 * Registers the feeds to be used by the backend.
 	 */
 	registerFeeds: function () {
 		for (var f in this.config.feeds) {
@@ -218,10 +218,10 @@ Module.register("newsfeed", {
 		}
 	},
 
-	/* generateFeed()
+	/**
 	 * Generate an ordered list of items for this configured module.
 	 *
-	 * attribute feeds object - An object with feeds returned by the node helper.
+	 * @param {object} feeds An object with feeds returned by the node helper.
 	 */
 	generateFeed: function (feeds) {
 		var newsItems = [];
@@ -274,12 +274,11 @@ Module.register("newsfeed", {
 		this.newsItems = newsItems;
 	},
 
-	/* subscribedToFeed(feedUrl)
+	/**
 	 * Check if this module is configured to show this feed.
 	 *
-	 * attribute feedUrl string - Url of the feed to check.
-	 *
-	 * returns bool
+	 * @param {string} feedUrl Url of the feed to check.
+	 * @returns {boolean} True if it is subscribed, false otherwise
 	 */
 	subscribedToFeed: function (feedUrl) {
 		for (var f in this.config.feeds) {
@@ -291,12 +290,11 @@ Module.register("newsfeed", {
 		return false;
 	},
 
-	/* titleForFeed(feedUrl)
-	 * Returns title for a specific feed Url.
+	/**
+	 * Returns title for the specific feed url.
 	 *
-	 * attribute feedUrl string - Url of the feed to check.
-	 *
-	 * returns string
+	 * @param {string} feedUrl Url of the feed
+	 * @returns {string} The title of the feed
 	 */
 	titleForFeed: function (feedUrl) {
 		for (var f in this.config.feeds) {
@@ -308,7 +306,7 @@ Module.register("newsfeed", {
 		return "";
 	},
 
-	/* scheduleUpdateInterval()
+	/**
 	 * Schedule visual update.
 	 */
 	scheduleUpdateInterval: function () {
diff --git a/modules/default/newsfeed/newsfeedfetcher.js b/modules/default/newsfeed/newsfeedfetcher.js
index ba32d1ad..20e45258 100644
--- a/modules/default/newsfeed/newsfeedfetcher.js
+++ b/modules/default/newsfeed/newsfeedfetcher.js
@@ -9,12 +9,14 @@ const FeedMe = require("feedme");
 const request = require("request");
 const iconv = require("iconv-lite");
 
-/* Fetcher
+/**
  * Responsible for requesting an update on the set interval and broadcasting the data.
  *
- * attribute url string - URL of the news feed.
- * attribute reloadInterval number - Reload interval in milliseconds.
- * attribute logFeedWarnings boolean - Log warnings when there is an error parsing a news article.
+ * @param {string} url URL of the news feed.
+ * @param {number} reloadInterval Reload interval in milliseconds.
+ * @param {string} encoding Encoding of the feed.
+ * @param {boolean} logFeedWarnings If true log warnings when there is an error parsing a news article.
+ * @class
  */
 const NewsfeedFetcher = function (url, reloadInterval, encoding, logFeedWarnings) {
 	const self = this;
@@ -31,7 +33,7 @@ const NewsfeedFetcher = function (url, reloadInterval, encoding, logFeedWarnings
 
 	/* private methods */
 
-	/* fetchNews()
+	/**
 	 * Request the new items.
 	 */
 	const fetchNews = function () {
@@ -95,7 +97,7 @@ const NewsfeedFetcher = function (url, reloadInterval, encoding, logFeedWarnings
 			.pipe(parser);
 	};
 
-	/* scheduleTimer()
+	/**
 	 * Schedule the timer for the next update.
 	 */
 	const scheduleTimer = function () {
@@ -107,10 +109,10 @@ const NewsfeedFetcher = function (url, reloadInterval, encoding, logFeedWarnings
 
 	/* public methods */
 
-	/* setReloadInterval()
+	/**
 	 * Update the reload interval, but only if we need to increase the speed.
 	 *
-	 * attribute interval number - Interval for the update in milliseconds.
+	 * @param {number} interval Interval for the update in milliseconds.
 	 */
 	this.setReloadInterval = function (interval) {
 		if (interval > 1000 && interval < reloadInterval) {
@@ -118,14 +120,14 @@ const NewsfeedFetcher = function (url, reloadInterval, encoding, logFeedWarnings
 		}
 	};
 
-	/* startFetch()
+	/**
 	 * Initiate fetchNews();
 	 */
 	this.startFetch = function () {
 		fetchNews();
 	};
 
-	/* broadcastItems()
+	/**
 	 * Broadcast the existing items.
 	 */
 	this.broadcastItems = function () {
diff --git a/modules/default/newsfeed/node_helper.js b/modules/default/newsfeed/node_helper.js
index 6aca2519..bdfcbfcc 100644
--- a/modules/default/newsfeed/node_helper.js
+++ b/modules/default/newsfeed/node_helper.js
@@ -24,12 +24,12 @@ module.exports = NodeHelper.create({
 		}
 	},
 
-	/* createFetcher(feed, config)
+	/**
 	 * Creates a fetcher for a new feed if it doesn't exist yet.
 	 * Otherwise it reuses the existing one.
 	 *
-	 * attribute feed object - A feed object.
-	 * attribute config object - A configuration object containing reload interval in milliseconds.
+	 * @param {object} feed The feed object.
+	 * @param {object} config The configuration object.
 	 */
 	createFetcher: function (feed, config) {
 		const url = feed.url || "";
@@ -68,7 +68,7 @@ module.exports = NodeHelper.create({
 		fetcher.startFetch();
 	},
 
-	/* broadcastFeeds()
+	/**
 	 * Creates an object with all feed items of the different registered feeds,
 	 * and broadcasts these using sendSocketNotification.
 	 */
diff --git a/modules/default/weather/weatherprovider.js b/modules/default/weather/weatherprovider.js
index cfcb3ef6..ed22054b 100644
--- a/modules/default/weather/weatherprovider.js
+++ b/modules/default/weather/weatherprovider.js
@@ -12,7 +12,7 @@ var WeatherProvider = Class.extend({
 	// Weather Provider Properties
 	providerName: null,
 
-	// The following properties have accestor methods.
+	// The following properties have accessor methods.
 	// Try to not access them directly.
 	currentWeatherObject: null,
 	weatherForecastArray: null,
@@ -119,6 +119,9 @@ WeatherProvider.providers = [];
 
 /**
  * Static method to register a new weather provider.
+ *
+ * @param {string} providerIdentifier The name of the weather provider
+ * @param {object} providerDetails The details of the weather provider
  */
 WeatherProvider.register = function (providerIdentifier, providerDetails) {
 	WeatherProvider.providers[providerIdentifier.toLowerCase()] = WeatherProvider.extend(providerDetails);
@@ -126,6 +129,10 @@ WeatherProvider.register = function (providerIdentifier, providerDetails) {
 
 /**
  * Static method to initialize a new weather provider.
+ *
+ * @param {string} providerIdentifier The name of the weather provider
+ * @param {object} delegate The weather module
+ * @returns {object} The new weather provider
  */
 WeatherProvider.initialize = function (providerIdentifier, delegate) {
 	providerIdentifier = providerIdentifier.toLowerCase();
diff --git a/package-lock.json b/package-lock.json
index 87374cc7..a3214e7a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1480,6 +1480,12 @@
       "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
       "dev": true
     },
+    "comment-parser": {
+      "version": "0.7.5",
+      "resolved": "https://registry.npmjs.org/comment-parser/-/comment-parser-0.7.5.tgz",
+      "integrity": "sha512-iH9YA35ccw94nx5244GVkpyC9eVTsL71jZz6iz5w6RIf79JLF2AsXHXq9p6Oaohyl3sx5qSMnGsWUDFIAfWL4w==",
+      "dev": true
+    },
     "commondir": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/commondir/-/commondir-1.0.1.tgz",
@@ -2378,9 +2384,9 @@
       }
     },
     "eslint": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-7.4.0.tgz",
-      "integrity": "sha512-gU+lxhlPHu45H3JkEGgYhWhkR9wLHHEXC9FbWFnTlEkbKyZKWgWRLgf61E8zWmBuI6g5xKBph9ltg3NtZMVF8g==",
+      "version": "7.5.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-7.5.0.tgz",
+      "integrity": "sha512-vlUP10xse9sWt9SGRtcr1LAC67BENcQMFeV+w5EvLEoFe3xJ8cF1Skd0msziRx/VMC+72B4DxreCE+OR12OA6Q==",
       "requires": {
         "@babel/code-frame": "^7.0.0",
         "ajv": "^6.10.0",
@@ -2390,9 +2396,9 @@
         "doctrine": "^3.0.0",
         "enquirer": "^2.3.5",
         "eslint-scope": "^5.1.0",
-        "eslint-utils": "^2.0.0",
-        "eslint-visitor-keys": "^1.2.0",
-        "espree": "^7.1.0",
+        "eslint-utils": "^2.1.0",
+        "eslint-visitor-keys": "^1.3.0",
+        "espree": "^7.2.0",
         "esquery": "^1.2.0",
         "esutils": "^2.0.2",
         "file-entry-cache": "^5.0.1",
@@ -2406,7 +2412,7 @@
         "js-yaml": "^3.13.1",
         "json-stable-stringify-without-jsonify": "^1.0.1",
         "levn": "^0.4.1",
-        "lodash": "^4.17.14",
+        "lodash": "^4.17.19",
         "minimatch": "^3.0.4",
         "natural-compare": "^1.4.0",
         "optionator": "^0.9.1",
@@ -2538,9 +2544,9 @@
           }
         },
         "strip-json-comments": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.0.tgz",
-          "integrity": "sha512-e6/d0eBu7gHtdCqFt0xJr642LdToM5/cN4Qb9DbHjVx1CP5RyeM+zH7pbecEmDv/lBqb0QH+6Uqq75rxFPkM0w=="
+          "version": "3.1.1",
+          "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz",
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         },
         "supports-color": {
           "version": "7.1.0",
@@ -2585,6 +2591,48 @@
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     },
+    "eslint-plugin-jsdoc": {
+      "version": "30.1.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-jsdoc/-/eslint-plugin-jsdoc-30.1.0.tgz",
+      "integrity": "sha512-eMsX+TMW6ycgXwxqU9xqfts2/e7cWCSGzk+gHgDvqaITyMJr8AcHTdd4pAMjpnOh0cd16lPZv+/R5LbQ4uVHQA==",
+      "dev": true,
+      "requires": {
+        "comment-parser": "^0.7.5",
+        "debug": "^4.1.1",
+        "jsdoctypeparser": "^8.0.0",
+        "lodash": "^4.17.15",
+        "regextras": "^0.7.1",
+        "semver": "^7.3.2",
+        "spdx-expression-parse": "^3.0.1"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "semver": {
+          "version": "7.3.2",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.2.tgz",
+          "integrity": "sha512-OrOb32TeeambH6UrhtShmF7CRDqhL6/5XpPNp2DuRH6+9QLw/orhp72j87v8Qa1ScDkvrrBNpZcDejAirJmfXQ==",
+          "dev": true
+        },
+        "spdx-expression-parse": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/spdx-expression-parse/-/spdx-expression-parse-3.0.1.tgz",
+          "integrity": "sha512-cbqHunsQWnJNE6KhVSMsMeH5H/L9EpymbzqTQ3uLwNCLZ1Q481oWaofqH7nO6V07xlXwY6PhQdQ2IedWx/ZK4Q==",
+          "dev": true,
+          "requires": {
+            "spdx-exceptions": "^2.1.0",
+            "spdx-license-ids": "^3.0.0"
+          }
+        }
+      }
+    },
     "eslint-plugin-prettier": {
       "version": "3.1.4",
       "resolved": "https://registry.npmjs.org/eslint-plugin-prettier/-/eslint-plugin-prettier-3.1.4.tgz",
@@ -2617,13 +2665,13 @@
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     "espree": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/espree/-/espree-7.1.0.tgz",
-      "integrity": "sha512-dcorZSyfmm4WTuTnE5Y7MEN1DyoPYy1ZR783QW1FJoenn7RailyWFsq/UL6ZAAA7uXurN9FIpYyUs3OfiIW+Qw==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/espree/-/espree-7.2.0.tgz",
+      "integrity": "sha512-H+cQ3+3JYRMEIOl87e7QdHX70ocly5iW4+dttuR8iYSPr/hXKFb+7dBsZ7+u1adC4VrnPlTkv0+OwuPnDop19g==",
       "requires": {
-        "acorn": "^7.2.0",
+        "acorn": "^7.3.1",
         "acorn-jsx": "^5.2.0",
-        "eslint-visitor-keys": "^1.2.0"
+        "eslint-visitor-keys": "^1.3.0"
       }
     },
     "esprima": {
@@ -3718,11 +3766,11 @@
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     "iconv-lite": {
-      "version": "0.5.1",
-      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.5.1.tgz",
-      "integrity": "sha512-ONHr16SQvKZNSqjQT9gy5z24Jw+uqfO02/ngBSBoqChZ+W8qXX7GPRa1RoUnzGADw8K63R1BXUMzarCVQBpY8Q==",
+      "version": "0.6.2",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.2.tgz",
+      "integrity": "sha512-2y91h5OpQlolefMPmUlivelittSWy0rP+oYVpn6A7GwVHNE8AWzoYOBNmlwks3LobaJxgHCYZAnyNo2GgpNRNQ==",
       "requires": {
-        "safer-buffer": ">= 2.1.2 < 3"
+        "safer-buffer": ">= 2.1.2 < 3.0.0"
       }
     },
     "ieee754": {
@@ -4188,6 +4236,12 @@
       "resolved": "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz",
       "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM="
     },
+    "jsdoctypeparser": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/jsdoctypeparser/-/jsdoctypeparser-8.0.0.tgz",
+      "integrity": "sha512-eLCs6s4JqN8TjFJfgdiLHRvogLhOAJz+5RIA2FtoMe6ZDyuvghvppnlIToqAEnVbxRqLMrfnNXpW8FpmR6IMBw==",
+      "dev": true
+    },
     "jsdom": {
       "version": "11.12.0",
       "resolved": "https://registry.npmjs.org/jsdom/-/jsdom-11.12.0.tgz",
@@ -5210,9 +5264,9 @@
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     },
     "moment": {
-      "version": "2.24.0",
-      "resolved": "https://registry.npmjs.org/moment/-/moment-2.24.0.tgz",
-      "integrity": "sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg=="
+      "version": "2.27.0",
+      "resolved": "https://registry.npmjs.org/moment/-/moment-2.27.0.tgz",
+      "integrity": "sha512-al0MUK7cpIcglMv3YF13qSgdAIqxHTO7brRtaz3DlSULbqfazqkc5kEjNrLDOM7fsjshoFIihnU8snrP7zUvhQ=="
     },
     "mri": {
       "version": "1.1.5",
@@ -6757,6 +6811,12 @@
       "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-3.1.0.tgz",
       "integrity": "sha512-ZOIzd8yVsQQA7j8GCSlPGXwg5PfmA1mrq0JP4nGhh54LaKN3xdai/vHUDu74pKwV8OxseMS65u2NImosQcSD0Q=="
     },
+    "regextras": {
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/regextras/-/regextras-0.7.1.tgz",
+      "integrity": "sha512-9YXf6xtW+qzQ+hcMQXx95MOvfqXFgsKDZodX3qZB0x2n5Z94ioetIITsBtvJbiOyxa/6s9AtyweBLCdPmPko/w==",
+      "dev": true
+    },
     "release-zalgo": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/release-zalgo/-/release-zalgo-1.0.0.tgz",
diff --git a/package.json b/package.json
index 3941f415..f2e95b7c 100644
--- a/package.json
+++ b/package.json
@@ -48,6 +48,7 @@
 		"current-week-number": "^1.0.7",
 		"danger": "^3.1.3",
 		"eslint-config-prettier": "^6.11.0",
+		"eslint-plugin-jsdoc": "^30.1.0",
 		"eslint-plugin-prettier": "^3.1.4",
 		"http-auth": "^3.2.3",
 		"husky": "^4.2.5",
@@ -70,7 +71,7 @@
 	"dependencies": {
 		"colors": "^1.1.2",
 		"console-stamp": "^0.2.9",
-		"eslint": "^7.4.0",
+		"eslint": "^7.5.0",
 		"express": "^4.16.2",
 		"express-ipfilter": "^1.0.1",
 		"feedme": "latest",