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diff --git a/vendor/oojs/oojs-ui/src/Error.js b/vendor/oojs/oojs-ui/src/Error.js
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+++ b/vendor/oojs/oojs-ui/src/Error.js
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+/**
+ * Errors contain a required message (either a string or jQuery selection) that is used to describe what went wrong
+ * in a {@link OO.ui.Process process}. The error's #recoverable and #warning configurations are used to customize the
+ * appearance and functionality of the error interface.
+ *
+ * The basic error interface contains a formatted error message as well as two buttons: 'Dismiss' and 'Try again' (i.e., the error
+ * is 'recoverable' by default). If the error is not recoverable, the 'Try again' button will not be rendered and the widget
+ * that initiated the failed process will be disabled.
+ *
+ * If the error is a warning, the error interface will include a 'Dismiss' and a 'Continue' button, which will try the
+ * process again.
+ *
+ * For an example of error interfaces, please see the [OOjs UI documentation on MediaWiki][1].
+ *
+ * [1]: https://www.mediawiki.org/wiki/OOjs_UI/Windows/Process_Dialogs#Processes_and_errors
+ *
+ * @class
+ *
+ * @constructor
+ * @param {string|jQuery} message Description of error
+ * @param {Object} [config] Configuration options
+ * @cfg {boolean} [recoverable=true] Error is recoverable.
+ *  By default, errors are recoverable, and users can try the process again.
+ * @cfg {boolean} [warning=false] Error is a warning.
+ *  If the error is a warning, the error interface will include a
+ *  'Dismiss' and a 'Continue' button. It is the responsibility of the developer to ensure that the warning
+ *  is not triggered a second time if the user chooses to continue.
+ */
+OO.ui.Error = function OoUiError( message, config ) {
+	// Allow passing positional parameters inside the config object
+	if ( OO.isPlainObject( message ) && config === undefined ) {
+		config = message;
+		message = config.message;
+	}
+
+	// Configuration initialization
+	config = config || {};
+
+	// Properties
+	this.message = message instanceof jQuery ? message : String( message );
+	this.recoverable = config.recoverable === undefined || !!config.recoverable;
+	this.warning = !!config.warning;
+};
+
+/* Setup */
+
+OO.initClass( OO.ui.Error );
+
+/* Methods */
+
+/**
+ * Check if the error is recoverable.
+ *
+ * If the error is recoverable, users are able to try the process again.
+ *
+ * @return {boolean} Error is recoverable
+ */
+OO.ui.Error.prototype.isRecoverable = function () {
+	return this.recoverable;
+};
+
+/**
+ * Check if the error is a warning.
+ *
+ * If the error is a warning, the error interface will include a 'Dismiss' and a 'Continue' button.
+ *
+ * @return {boolean} Error is warning
+ */
+OO.ui.Error.prototype.isWarning = function () {
+	return this.warning;
+};
+
+/**
+ * Get error message as DOM nodes.
+ *
+ * @return {jQuery} Error message in DOM nodes
+ */
+OO.ui.Error.prototype.getMessage = function () {
+	return this.message instanceof jQuery ?
+		this.message.clone() :
+		$( '<div>' ).text( this.message ).contents();
+};
+
+/**
+ * Get the error message text.
+ *
+ * @return {string} Error message
+ */
+OO.ui.Error.prototype.getMessageText = function () {
+	return this.message instanceof jQuery ? this.message.text() : this.message;
+};