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I use this module in ally.js and have come across a problem (medialize/ally.js#92) when loading domtokenlist-shim in an environment other than a browser (Node, WebWorker, …). The module doesn't have to do anything in these environments, it should just not throw any errors because
window
doesn't exist. By addingtypeof window != 'undefined' &&
to your IIFEs, the module does not execute in Node.This is PR a quick-n-dirty "fix" and the following is likely a different issue: We may want to use
src/DOMTokenList.js
separately of the DOM. To make that possible, the module needs to be wrapped in UMD and return the object, rather than assign it to window. Is that something you could agree to?