User:Ahecht/Scripts/RedirectID.js

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This user script seems to have a documentation page at User:Ahecht/Scripts/RedirectID.

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// RedirectID by Ahecht v0.1.0

$(document).ready( () => {
var titles=[], redirects={};
$( "div.mw-parser-output a.mw-redirect" ).each(function() {titles.push($(this).prop('title'));});
mw.loader.using( [ 'mediawiki.api' ], () => {

function getRedirects() {
	var fiftyTitles = titles.splice(0,50);
	new mw.Api().get( {
		action: 'query', prop: '', redirects: 1, titles: fiftyTitles.join('|')
	} ).fail( (e, f) => console.warn(f.error.info) ).done( data => {
		if (typeof data?.query?.redirects === 'object') {
			data.query.redirects.forEach(i =>
				redirects[i.from] = i.to + (i?.tofragment ? (" § " + i.tofragment) : '')
			);
			if (titles.length > 0) {
				getRedirects();
			} else if (Object.keys(redirects).length) {
				$( "div.mw-parser-output a.mw-redirect" ).each(function() {
					var title = $(this).prop('title');
					if (typeof redirects[title] === 'string') {
						$(this).prop('title', title + " → " + redirects[title]);
					}
				});
			}
		}
	});
}
getRedirects();

} );
} );