User:Polygnotus/Scripts/EditAsMe.js

Code that you insert on this page could contain malicious content capable of compromising your account. If you import a script from another page with "importScript", "mw.loader.load", "iusc", or "lusc", take note that this causes you to dynamically load a remote script, which could be changed by others. Editors are responsible for all edits and actions they perform, including by scripts. User scripts are not centrally supported and may malfunction or become inoperable due to software changes. A guide to help you find broken scripts is available. If you are unsure whether code you are adding to this page is safe, you can ask at the appropriate village pump.
This code will be executed when previewing this page.

Documentation for this user script can be added at User:Polygnotus/Scripts/EditAsMe.

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// Intercept all MediaWiki API calls and add assertuser to prevent any action
// being attributed to an IP or temporary user if the session expires.
mw.loader.using( 'mediawiki.api' ).then( function () {
    var userName = mw.config.get( 'wgUserName' );
    if ( !userName ) {
        return;
    }
    var originalAjax = mw.Api.prototype.ajax;
    mw.Api.prototype.ajax = function ( parameters, ajaxOptions ) {
        parameters = Object.assign( {}, parameters, {
            assertuser: userName
        } );
        var request = originalAjax.call( this, parameters, ajaxOptions );
        var promise = request.catch( function ( code ) {
            if ( code === 'assertuserfailed' || code === 'assertnameduserfailed' ) {
                mw.notify(
                    'Your session has expired. Please log in again.',
                    { type: 'error', autoHide: false }
                );
            }
            return $.Deferred().reject.apply( null, arguments ).promise();
        } );
        // Forward abort() from the original jqXHR to the returned promise
        promise.abort = function () {
            return request.abort();
        };
        return promise;
    };
} );