MediaWiki:Gadget-CropTool.js

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This user script seems to have a documentation page at MediaWiki:Gadget-CropTool.

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// CropTool code begins, see [[Commons:CropTool]] for details
'use strict';
var title = mw.config.get('wgTitle');
if (mw.config.get('wgNamespaceNumber') === 6 &&
	mw.config.get('wgIsArticle') &&
	/(PNG|GIF|JPE?G|DJVU|PDF|TIF?F|WEBP|SVG)$/i.test(title) &&
	document.getElementById('file')) {
	$(function () {
		var url = new URL('https://croptool.toolforge.org/');
		url.searchParams.set('title', title.replace(/ /g, '_'));
		var page = mw.util.getParamValue('page');
		if (page) {
			url.searchParams.set('page', page);
		}
		if (mw.config.get('wgDBname') !== 'commonswiki') {
			url.searchParams.set('site', mw.config.get('wgServer').replace(/^\/\//, ''));
		}
		mw.util.addPortletLink(
			'p-tb',
			url.toString(),
			'⌗ CropTool',
			't-crop',
			'Crop this image');
	});
}