Greasemonkey API stubs with JSDoc, for WebStorm etc

Greasemonkey.js

/**
 * Created by azu.
 * Date: 10/11/28
 * Updated by fuzzykiller (2015/08/28)
 * License: MIT License
 */

/**
 * An object that exposes various information about Greasemonkey and the running User Script.
 */
GM_info = {
    /**
     * An object containing data about the currently running script.
     */
    "script": {
        /**
         * Possibly empty string.
         * @type {String}
         */
        "description": "",
        
        /**
         * Possibly empty array of strings.
         * @type {String[]}
         */
        "excludes": [],
        
        /**
         * Possibly empty array of strings.
         * @type {String[]}
         */
        "includes": [],
        
        /**
         * Possibly empty array of strings. (Bug in 0.9.16.)
         * @type {String[]}
         */
        "matches": [],
        
        /**
         * @type {String}
         */
        "name": "",
        
        /**
         * Possibly empty string.
         * @type {String}
         */
        "namespace": "",
        
        /**
         * An object whose keys are resource names and values are the corresponding URLs. (As of Greasemonkey 1.2.)
         * @type {Object.<String, Number>}
         */
        "resources": {},
        
        /**
         * @type {String}
         */
        "run-at": "",
        
        /**
         * @type {Boolean}
         */
        "unwrap": false,
        
        /**
         * Possibly empty string.
         * @type {String}
         */
        "version": "0.1"
    },
    
    /**
     * A string, the entire literal Metadata Block (without the delimiters) for the currently running script.
     * @type {String}
     */
    "scriptMetaStr": "",
    
    /**
     * A boolean; when true Greasemonkey will attempt to auto-update the script.
     * @type {Boolean}
     */
    "scriptWillUpdate": true,
    
    /**
     * The version of Greasemonkey
     * @type {String}
     */
    "version": "1.2"
};

/**
 * This method deletes an existing name / value pair from storage.
 * See {@link GM_setValue} for details regarding the storage of these values. 
 * @param {String} name Property name to delete.
 */
function GM_deleteValue(name) {
}

/**
 * This method retrieves a value that was set with {@link GM_setValue}.
 * See {@link GM_setValue} for details on the storage of these values. 
 * @param {String} name The property name to get. See {@link GM_setValue} for details.
 * @param {String|Number|Boolean} [defaultValue] Any value to be returned, when no value has previously been set.
 * @returns {String|Number|Boolean} When this name has been set, value as previously set. Otherwise <code>defaultValue</code>, if provided, or <code>undefined</code>.
 */
function GM_getValue(name, defaultValue) {
}

/**
 * This method retrieves an array of preference names that this script has stored. See {@link GM_setValue} for details on the storage of these values.
 * @return {String[]}
 */
function GM_listValues() {
}

/**
 * This method allows user script authors to persist simple values across page-loads.
 * <code>String</code>, <code>Boolean</code> and <code>Number</code> are currently the only allowed data types.
 * @param {String} name The unique (within this script) name for this value. Should be restricted to valid Javascript identifier characters.
 * @param {String|Number|Boolean} value Any valid value of these types. Any other type may cause undefined behavior, including crashes.
 */
function GM_setValue(name, value) {
}

/**
 * Given a defined @resource, this method returns it as a string.
 * @param {String} resourceName The name provided when the @resource was defined
 * @return {String}
 * @throws {Error} Throws an Error when the named resource does not exist. 
 */
function GM_getResourceText(resourceName) {
}

/**
 * Given a defined @resource, this method returns it as a URL. 
 * @param {String} resourceName The name provided when the @resource was defined
 * @return {String} <code>greasemonkey-script:[script uuid]/[resource name]</code>
 */
function GM_getResourceURL(resourceName) {
}

/**
 * This method adds a string of CSS to the document. It creates a new <code>&lt;style&gt;</code> element, adds the given CSS to it, and inserts it into the <code>&lt;head&gt;</code>.
 * @param {String} css A string of CSS.
 */
function GM_addStyle(css) {
}

/**
 * This method provides a very simple logging facility. The output is displayed in the error console, and includes the namespace and name of the script before and the provided string value.
 * @deprecated <b>This feature is deprecated.</b> Script authors are advised to use console logging instead.
 * @param {String} message String (or any object with a <code>.toString()</code> method) to display in the console.
 */
function GM_log(message) {
}

/**
 * This method opens the specified URL in a new tab.
 * @param {String} url The URL to navigate the new tab to.
 * @param {Boolean} [open_in_background] Force tab to/to not open in a background tab. Default (unspecified) behavior honors Firefox configuration.
 */
function GM_openInTab(url, open_in_background) {
}

/**
 * This method allows user scripts to add an item to the User Script Commands menu. 
 * @param {String} caption The caption to display on the menu item.
 * @param {Function} commandFunc The function to call when this menu item is selected by the user.
 * @param {String} accessKey A single character that can be used to select command when the menu is open. It should be a letter in the caption.
 */
function GM_registerMenuCommand(caption, commandFunc, accessKey) {
}

/**
 * Sets the current contents of the operating system's clipboard.
 * @param {String} text Any text.
 */
function GM_setClipboard(text) {
}

/**
 * Response object for {@link GM_xmlhttpRequest}. The data available will vary slightly, depending on the type of callback. 
 * @typedef {Object} GM_xmlhttpRequest_response
 * @property [Number] readyState The state of the underlying <code>XMLHttpRequest</code>. 
 * @property [String] responseHeaders All the response headers as a string, or <code>null</code> if no response has been received. 
 * @property [String] responseText Returns a string that contains the response to the request as text, or <code>null</code> if the request was unsuccessful or has not yet been sent.
 * @property [Number] status The HTTP result code (for example, status is 200 for a successful request).
 * @property [String] statusText Returns a string containing the response string returned by the HTTP server. This includes the entire text of the response message ("200 OK", for example).
 * @property [Object] context The same object passed into the original request.
 * @property [String] finalUrl The final URL requested, if Location redirects were followed.
 * @property [Boolean] lengthComputable (Available while in progress) Specifies whether or not the total size of the transfer is known.
 * @property [Number] loaded (Available while in progress) The number of bytes transferred since the beginning of the operation. This doesn't include headers and other overhead, but only the content itself.
 * @property [Number] total (Available while in progress) The total number of bytes of content that will be transferred during the operation. If the total size is unknown, this value is zero.
 */
 
/**
 * Callback signature for {@link GM_xmlhttpRequest}.
 * @callback GM_xmlhttpRequest_callback
 * @param {GM_xmlhttpRequest_response} response Response object
 */
 
/**
 * Object containing optional function callbacks to monitor the upload of data.
 * @typedef {Object} GM_xmlhttpRequest_details_upload
 * @property {GM_xmlhttpRequest_callback} onabort Optional. Will be called when the request is aborted.
 * @property {GM_xmlhttpRequest_callback} onerror Optional. Will be called if an error occurs while processing the request.
 * @property {GM_xmlhttpRequest_callback} onload Optional. Will be called when the request has completed successfully.
 * @property {GM_xmlhttpRequest_callback} onprogress Optional. Will be called when the request progress changes.
 */

/**
 * Request options for {@link GM_xmlhttpRequest}.
 * @typedef {Object} GM_xmlhttpRequest_details
 * @property {Boolean} binary Optional, default false. When true, use the underlying <code>.sendAsBinary()</code> method.
 * @property {Object} context Optional, any object. This object will also be the context property of the {@link GM_xmlhttpRequest_response} Object.
 * @property {String} data Optional. Data to send in the request body. Usually for POST method requests.
 * @property {Object.<String, String>} headers Optional. A set of headers to include in the request.
 * @property {String} method Type of HTTP request to make (E.G. "GET", "POST")
 * @property {GM_xmlhttpRequest_callback} onabort Optional. Will be called when the request is aborted.
 * @property {GM_xmlhttpRequest_callback} onerror Optional. Will be called if an error occurs while processing the request.
 * @property {GM_xmlhttpRequest_callback} onload Optional. Will be called when the request has completed successfully.
 * @property {GM_xmlhttpRequest_callback} onprogress Optional. Will be called when the request progress changes.
 * @property {GM_xmlhttpRequest_callback} onreadystatechange Optional. Will be called repeatedly while the request is in progress.
 * @property {GM_xmlhttpRequest_callback} ontimeout Optional. Will be called if/when the request times out.
 * @property {String} overrideMimeType Optional. A MIME type to specify with the request (E.G. "text/html; charset=ISO-8859-1").
 * @property {String} password Optional. Password to use for authentication purposes.
 * @property {Boolean} synchronous When true, this is a synchronous request. Be careful: The entire Firefox UI will be locked and frozen until the request completes. In this mode, more data will be available in the return value.
 * @property {Number} timeout The number of milliseconds to wait before terminating the call; zero (the default) means wait forever.
 * @property {GM_xmlhttpRequest_details_upload} upload Object containing optional function callbacks to monitor the upload of data.
 * @property {String} url The URL to make the request to. Must be an absolute URL, beginning with the scheme. As of version 0.8.6, the URL may be relative to the current page.
 * @property {String} user Optional. User name to use for authentication purposes.
 */

/**
 * Return object for {@link GM_xmlhttpRequest}.
 * @typedef {Object} GM_xmlhttpRequest_async
 * @property [String] finalUrl The final URL requested, if Location redirects were followed.
 * @property [Number] readyState The state of the underlying <code>XMLHttpRequest</code>.
 * @property [String] responseHeaders All the response headers as a string, or <code>null</code> if no response has been received. 
 * @property [String] responseText Returns a string that contains the response to the request as text, or <code>null</code> if the request was unsuccessful or has not yet been sent.
 * @property [Number] status The HTTP result code (for example, status is 200 for a successful request).
 * @property [String] statusText Returns a string containing the response string returned by the HTTP server. This includes the entire text of the response message ("200 OK", for example).
 * @method abort Abort request.
 */
 
/**
 * This method performs a similar function to the standard XMLHttpRequest object, but allows these requests to cross the same origin policy boundaries. 
 * @param {GM_xmlhttpRequest_details} details Request options.
 * @returns {GM_xmlhttpRequest_async} In the normal (asynchronous) case, an object with one method: <code>abort()</code>. In the synchronous case, an object with the <code>abort()</code> method, and properties describing the response.
 */
function GM_xmlhttpRequest(details) {
}

 /**
  * This object provides access to the raw JavaScript window scope of the content page. It is most commonly used to access JavaScript variables on the page.
  */
var unsafeWindow = window;

I use this to also define GM.foo instead of only GM_foo:

/**
 * Created by azu. (modified by Alistair1231)
 * Date: 10/11/28
 * Updated by fuzzykiller (2015/08/28), Alistair1231 (2025/01/02)
 * License: MIT License
 */

/**
 * An object containing Greasemonkey's API when using the modern GM object approach
 */
const GM = {
  /**
   * An object that exposes various information about Greasemonkey and the running User Script.
   */
  info: {
    /**
     * An object containing data about the currently running script.
     */
    script: {
      /**
       * Possibly empty string.
       * @type {String}
       */
      description: '',

      /**
       * Possibly empty array of strings.
       * @type {String[]}
       */
      excludes: [],

      /**
       * Possibly empty array of strings.
       * @type {String[]}
       */
      includes: [],

      /**
       * Possibly empty array of strings. (Bug in 0.9.16.)
       * @type {String[]}
       */
      matches: [],

      /**
       * @type {String}
       */
      name: '',

      /**
       * Possibly empty string.
       * @type {String}
       */
      namespace: '',

      /**
       * An object whose keys are resource names and values are the corresponding URLs. (As of Greasemonkey 1.2.)
       * @type {Object.<String, Number>}
       */
      resources: {},

      /**
       * @type {String}
       */
      'run-at': '',

      /**
       * @type {Boolean}
       */
      unwrap: false,

      /**
       * Possibly empty string.
       * @type {String}
       */
      version: '0.1',
    },

    /**
     * A string, the entire literal Metadata Block (without the delimiters) for the currently running script.
     * @type {String}
     */
    scriptMetaStr: '',

    /**
     * A boolean; when true Greasemonkey will attempt to auto-update the script.
     * @type {Boolean}
     */
    scriptWillUpdate: true,

    /**
     * The version of Greasemonkey
     * @type {String}
     */
    version: '1.2',
  },

  /**
   * This method deletes an existing name / value pair from storage.
   * See {@link GM.setValue} for details regarding the storage of these values.
   * @param {String} name Property name to delete.
   * @returns {Promise<void>}
   */
  deleteValue: async function (name) {},

  /**
   * This method retrieves a value that was set with {@link GM.setValue}.
   * See {@link GM.setValue} for details on the storage of these values.
   * @param {String} name The property name to get. See {@link GM.setValue} for details.
   * @param {String|Number|Boolean} [defaultValue] Any value to be returned, when no value has previously been set.
   * @returns {Promise<String|Number|Boolean>} When this name has been set, value as previously set. Otherwise <code>defaultValue</code>, if provided, or <code>undefined</code>.
   */
  getValue: async function (name, defaultValue) {},

  /**
   * This method retrieves an array of preference names that this script has stored. See {@link GM.setValue} for details on the storage of these values.
   * @return {Promise<String[]>}
   */
  listValues: async function () {},

  /**
   * This method allows user script authors to persist simple values across page-loads.
   * <code>String</code>, <code>Boolean</code> and <code>Number</code> are currently the only allowed data types.
   * @param {String} name The unique (within this script) name for this value. Should be restricted to valid Javascript identifier characters.
   * @param {String|Number|Boolean} value Any valid value of these types. Any other type may cause undefined behavior, including crashes.
   * @returns {Promise<void>}
   */
  setValue: async function (name, value) {},

  /**
   * Given a defined @resource, this method returns it as a string.
   * @param {String} resourceName The name provided when the @resource was defined
   * @returns {Promise<String>}
   * @throws {Error} Throws an Error when the named resource does not exist.
   */
  getResourceText: async function (resourceName) {},

  /**
   * Given a defined @resource, this method returns it as a URL.
   * @param {String} resourceName The name provided when the @resource was defined
   * @returns {Promise<String>} <code>greasemonkey-script:[script uuid]/[resource name]</code>
   */
  getResourceUrl: async function (resourceName) {},

  /**
   * This method adds a string of CSS to the document. It creates a new <code>&lt;style&gt;</code> element, adds the given CSS to it, and inserts it into the <code>&lt;head&gt;</code>.
   * @param {String} css A string of CSS.
   * @returns {Promise<void>}
   */
  addStyle: async function (css) {},

  /**
   * This method opens the specified URL in a new tab.
   * @param {String} url The URL to navigate the new tab to.
   * @param {Object} [options] Options for opening the tab
   * @param {Boolean} [options.active] Make the new tab active (focused). Defaults to true.
   * @param {Boolean} [options.insert] Insert the new tab next to the current one. Defaults to true.
   * @param {Boolean} [options.setParent] Make the browser re-focus the current tab on tab close. Defaults to false.
   * @returns {Promise<void>}
   */
  openInTab: async function (url, options) {},

  /**
   * This method allows user scripts to add an item to the User Script Commands menu.
   * @param {String} caption The caption to display on the menu item.
   * @param {Function} commandFunc The function to call when this menu item is selected by the user.
   * @param {String} accessKey A single character that can be used to select command when the menu is open. It should be a letter in the caption.
   * @returns {Promise<void>}
   */
  registerMenuCommand: async function (caption, commandFunc, accessKey) {},

  /**
   * Sets the current contents of the operating system's clipboard.
   * @param {String} text Any text.
   * @returns {Promise<void>}
   */
  setClipboard: async function (text) {},

  /**
   * This method performs a similar function to the standard XMLHttpRequest object, but allows these requests to cross the same origin policy boundaries.
   * @param {GM_xmlhttpRequest_details} details Request options.
   * @returns {Promise<GM_xmlhttpRequest_async>} In the normal (asynchronous) case, an object with one method: <code>abort()</code>. In the synchronous case, an object with the <code>abort()</code> method, and properties describing the response.
   */
  xmlHttpRequest: async function (details) {},
}

/**
 * Response object for {@link GM.xmlHttpRequest}. The data available will vary slightly, depending on the type of callback.
 * @typedef {Object} GM_xmlhttpRequest_response
 * @property [Number] readyState The state of the underlying <code>XMLHttpRequest</code>.
 * @property [String] responseHeaders All the response headers as a string, or <code>null</code> if no response has been received.
 * @property [String] responseText Returns a string that contains the response to the request as text, or <code>null</code> if the request was unsuccessful or has not yet been sent.
 * @property [Number] status The HTTP result code (for example, status is 200 for a successful request).
 * @property [String] statusText Returns a string containing the response string returned by the HTTP server. This includes the entire text of the response message ("200 OK", for example).
 * @property [Object] context The same object passed into the original request.
 * @property [String] finalUrl The final URL requested, if Location redirects were followed.
 * @property [Boolean] lengthComputable (Available while in progress) Specifies whether or not the total size of the transfer is known.
 * @property [Number] loaded (Available while in progress) The number of bytes transferred since the beginning of the operation. This doesn't include headers and other overhead, but only the content itself.
 * @property [Number] total (Available while in progress) The total number of bytes of content that will be transferred during the operation. If the total size is unknown, this value is zero.
 */

/**
 * Callback signature for {@link GM.xmlHttpRequest}.
 * @callback GM_xmlhttpRequest_callback
 * @param {GM_xmlhttpRequest_response} response Response object
 */

/**
 * Object containing optional function callbacks to monitor the upload of data.
 * @typedef {Object} GM_xmlhttpRequest_details_upload
 * @property {GM_xmlhttpRequest_callback} onabort Optional. Will be called when the request is aborted.
 * @property {GM_xmlhttpRequest_callback} onerror Optional. Will be called if an error occurs while processing the request.
 * @property {GM_xmlhttpRequest_callback} onload Optional. Will be called when the request has completed successfully.
 * @property {GM_xmlhttpRequest_callback} onprogress Optional. Will be called when the request progress changes.
 */

/**
 * Request options for {@link GM.xmlHttpRequest}.
 * @typedef {Object} GM_xmlhttpRequest_details
 * @property {Boolean} binary Optional, default false. When true, use the underlying <code>.sendAsBinary()</code> method.
 * @property {Object} context Optional, any object. This object will also be the context property of the {@link GM_xmlhttpRequest_response} Object.
 * @property {String} data Optional. Data to send in the request body. Usually for POST method requests.
 * @property {Object.<String, String>} headers Optional. A set of headers to include in the request.
 * @property {String} method Type of HTTP request to make (E.G. "GET", "POST")
 * @property {GM_xmlhttpRequest_callback} onabort Optional. Will be called when the request is aborted.
 * @property {GM_xmlhttpRequest_callback} onerror Optional. Will be called if an error occurs while processing the request.
 * @property {GM_xmlhttpRequest_callback} onload Optional. Will be called when the request has completed successfully.
 * @property {GM_xmlhttpRequest_callback} onprogress Optional. Will be called when the request progress changes.
 * @property {GM_xmlhttpRequest_callback} onreadystatechange Optional. Will be called repeatedly while the request is in progress.
 * @property {GM_xmlhttpRequest_callback} ontimeout Optional. Will be called if/when the request times out.
 * @property {String} overrideMimeType Optional. A MIME type to specify with the request (E.G. "text/html; charset=ISO-8859-1").
 * @property {String} password Optional. Password to use for authentication purposes.
 * @property {Boolean} synchronous When true, this is a synchronous request. Be careful: The entire Firefox UI will be locked and frozen until the request completes. In this mode, more data will be available in the return value.
 * @property {Number} timeout The number of milliseconds to wait before terminating the call; zero (the default) means wait forever.
 * @property {GM_xmlhttpRequest_details_upload} upload Object containing optional function callbacks to monitor the upload of data.
 * @property {String} url The URL to make the request to. Must be an absolute URL, beginning with the scheme. As of version 0.8.6, the URL may be relative to the current page.
 * @property {String} user Optional. User name to use for authentication purposes.
 */

/**
 * Return object for {@link GM.xmlHttpRequest}.
 * @typedef {Object} GM_xmlhttpRequest_async
 * @property [String] finalUrl The final URL requested, if Location redirects were followed.
 * @property [Number] readyState The state of the underlying <code>XMLHttpRequest</code>.
 * @property [String] responseHeaders All the response headers as a string, or <code>null</code> if no response has been received.
 * @property [String] responseText Returns a string that contains the response to the request as text, or <code>null</code> if the request was unsuccessful or has not yet been sent.
 * @property [Number] status The HTTP result code (for example, status is 200 for a successful request).
 * @property [String] statusText Returns a string containing the response string returned by the HTTP server. This includes the entire text of the response message ("200 OK", for example).
 * @method abort Abort request.
 */

/**
 * This object provides access to the raw JavaScript window scope of the content page. It is most commonly used to access JavaScript variables on the page.
 */
var unsafeWindow = window

/**
 * An object that exposes various information about Greasemonkey and the running User Script.
 */
GM_info = {
  /**
   * An object containing data about the currently running script.
   */
  script: {
    /**
     * Possibly empty string.
     * @type {String}
     */
    description: '',

    /**
     * Possibly empty array of strings.
     * @type {String[]}
     */
    excludes: [],

    /**
     * Possibly empty array of strings.
     * @type {String[]}
     */
    includes: [],

    /**
     * Possibly empty array of strings. (Bug in 0.9.16.)
     * @type {String[]}
     */
    matches: [],

    /**
     * @type {String}
     */
    name: '',

    /**
     * Possibly empty string.
     * @type {String}
     */
    namespace: '',

    /**
     * An object whose keys are resource names and values are the corresponding URLs. (As of Greasemonkey 1.2.)
     * @type {Object.<String, Number>}
     */
    resources: {},

    /**
     * @type {String}
     */
    'run-at': '',

    /**
     * @type {Boolean}
     */
    unwrap: false,

    /**
     * Possibly empty string.
     * @type {String}
     */
    version: '0.1',
  },

  /**
   * A string, the entire literal Metadata Block (without the delimiters) for the currently running script.
   * @type {String}
   */
  scriptMetaStr: '',

  /**
   * A boolean; when true Greasemonkey will attempt to auto-update the script.
   * @type {Boolean}
   */
  scriptWillUpdate: true,

  /**
   * The version of Greasemonkey
   * @type {String}
   */
  version: '1.2',
}

/**
 * This method deletes an existing name / value pair from storage.
 * See {@link GM_setValue} for details regarding the storage of these values.
 * @param {String} name Property name to delete.
 */
function GM_deleteValue(name) {}

/**
 * This method retrieves a value that was set with {@link GM_setValue}.
 * See {@link GM_setValue} for details on the storage of these values.
 * @param {String} name The property name to get. See {@link GM_setValue} for details.
 * @param {String|Number|Boolean} [defaultValue] Any value to be returned, when no value has previously been set.
 * @returns {String|Number|Boolean} When this name has been set, value as previously set. Otherwise <code>defaultValue</code>, if provided, or <code>undefined</code>.
 */
function GM_getValue(name, defaultValue) {}

/**
 * This method retrieves an array of preference names that this script has stored. See {@link GM_setValue} for details on the storage of these values.
 * @return {String[]}
 */
function GM_listValues() {}

/**
 * This method allows user script authors to persist simple values across page-loads.
 * <code>String</code>, <code>Boolean</code> and <code>Number</code> are currently the only allowed data types.
 * @param {String} name The unique (within this script) name for this value. Should be restricted to valid Javascript identifier characters.
 * @param {String|Number|Boolean} value Any valid value of these types. Any other type may cause undefined behavior, including crashes.
 */
function GM_setValue(name, value) {}

/**
 * Given a defined @resource, this method returns it as a string.
 * @param {String} resourceName The name provided when the @resource was defined
 * @return {String}
 * @throws {Error} Throws an Error when the named resource does not exist.
 */
function GM_getResourceText(resourceName) {}

/**
 * Given a defined @resource, this method returns it as a URL.
 * @param {String} resourceName The name provided when the @resource was defined
 * @return {String} <code>greasemonkey-script:[script uuid]/[resource name]</code>
 */
function GM_getResourceURL(resourceName) {}

/**
 * This method adds a string of CSS to the document. It creates a new <code>&lt;style&gt;</code> element, adds the given CSS to it, and inserts it into the <code>&lt;head&gt;</code>.
 * @param {String} css A string of CSS.
 */
function GM_addStyle(css) {}

/**
 * This method provides a very simple logging facility. The output is displayed in the error console, and includes the namespace and name of the script before and the provided string value.
 * @deprecated <b>This feature is deprecated.</b> Script authors are advised to use console logging instead.
 * @param {String} message String (or any object with a <code>.toString()</code> method) to display in the console.
 */
function GM_log(message) {}

/**
 * This method opens the specified URL in a new tab.
 * @param {String} url The URL to navigate the new tab to.
 * @param {Boolean} [open_in_background] Force tab to/to not open in a background tab. Default (unspecified) behavior honors Firefox configuration.
 */
function GM_openInTab(url, open_in_background) {}

/**
 * This method allows user scripts to add an item to the User Script Commands menu.
 * @param {String} caption The caption to display on the menu item.
 * @param {Function} commandFunc The function to call when this menu item is selected by the user.
 * @param {String} accessKey A single character that can be used to select command when the menu is open. It should be a letter in the caption.
 */
function GM_registerMenuCommand(caption, commandFunc, accessKey) {}

/**
 * Sets the current contents of the operating system's clipboard.
 * @param {String} text Any text.
 */
function GM_setClipboard(text) {}

/**
 * This method performs a similar function to the standard XMLHttpRequest object, but allows these requests to cross the same origin policy boundaries.
 * @param {GM_xmlhttpRequest_details} details Request options.
 * @returns {GM_xmlhttpRequest_async} In the normal (asynchronous) case, an object with one method: <code>abort()</code>. In the synchronous case, an object with the <code>abort()</code> method, and properties describing the response.
 */
function GM_xmlhttpRequest(details) {}