stylus/content/install-hook-userstylesworld.js

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JavaScript
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'use strict';
(() => {
const allowedOrigin = 'https://userstyles.world';
const sendPostMessage = message => {
if (allowedOrigin === location.origin) {
window.postMessage(message, location.origin);
}
};
const onPageLoaded = event => {
if (event.data
&& event.data.type === 'usw-ready'
&& allowedOrigin === event.origin
) {
sendPostMessage({type: 'usw-remove-stylus-button'});
}
};
window.addEventListener('message', onPageLoaded);
})();