speculationRules.js
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speculationRules.js
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	/* eslint-disable camelcase */
	/**
	* Initializes the Speculation Rules API for Citizen
	*
	* @return {void}
	*/
	function init() {
	if (
	!HTMLScriptElement.supports \|\|
	!HTMLScriptElement.supports( 'speculationrules' )
	) {
	return;
	}
	const articlePath = mw.config.get( 'wgArticlePath' ).replace( /\$(1)/, '' );
	const namespaces = mw.config.get( 'wgFormattedNamespaces' );
	if ( !articlePath \|\| !namespaces ) {
	return;
	}

	const specRules = {
	prerender: [ {
	where: {
	and: [
	{ href_matches: `${ articlePath }*` }, // Under article path
	{ href_matches: `${ articlePath }${ namespaces[ -1 ] }` }, // No special namespace
	{ not: { href_matches: '/.*.php' } }, // Not PHP file
	{ not: { href_matches: '/\\?(^\|&)=' } }, // No query strings
	{ not: { selector_matches: '[rel~=nofollow]' } } // No nofollow link
	]
	},
	eagerness: 'moderate'
	} ]
	};

	const specScript = document.createElement( 'script' );
	specScript.type = 'speculationrules';
	specScript.textContent = JSON.stringify( specRules );
	document.body.append( specScript );
	}

	module.exports = {
	init: init
	};