wp-lib-extra is a function library prepared as a gadget on the Japanese Wikipedia.

• https://ja.wikipedia.org/wiki/MediaWiki:Gadget-WpLibExtra.js

This library is best characterized by its Wikitext class, which provides various interfaces to parse wikitext, supplementing functionalities lacking in built-in JavaScript libraries of MediaWiki.

How to use this library:

// In gadgets
var lib = require('./WpLibExtra.js');
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// In local non-gadgets
var moduleName = 'ext.gadget.WpLibExtra';
mw.loader.using(moduleName).then(function(require) {
    var lib = require(moduleName);
});
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// In non-local scripts
var moduleName = 'ext.gadget.WpLibExtra';
var moduleUrl = '//ja.wikipedia.org/w/load.php?modules=' + moduleName;
mw.loader.getScript(moduleUrl).then(function() {
    mw.loader.using(moduleName).then(function(require) {
        var lib = require(moduleName);
    });
});
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