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x/goober/src/core/get-sheet.js

🥜 goober, a less than 1KB 🎉 css-in-js alternative with a familiar API
cristianbote/goober
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let GOOBER_ID = '_goober';let ssr = {    data: ''};
/** * Returns the _commit_ target * @param {Object} [target] * @returns {HTMLStyleElement|{data: ''}} */export let getSheet = (target) => {    if (typeof window === 'object') {        // Querying the existing target for a previously defined <style> tag        // We're doing a querySelector because the <head> element doesn't implemented the getElementById api        return (            (target ? target.querySelector('#' + GOOBER_ID) : window[GOOBER_ID]) ||            Object.assign((target || document.head).appendChild(document.createElement('style')), {                innerHTML: ' ',                id: GOOBER_ID            })        ).firstChild;    }
    return target || ssr;};