Export all labels of a GitHub repository

github-labels-export.js

let labels = []
let selector = `a.js-label-link`

function getRGBFromElement(element) {
    const red = element.attributeStyleMap.get('--label-r')[0]
    const green = element.attributeStyleMap.get('--label-g')[0]
    const blue = element.attributeStyleMap.get('--label-b')[0]
    
    return `rgb(${red}, ${blue}, ${green})`
}

function hexFromRGB(rgb) {
    let hex = parseInt(rgb).toString(16)

    if (hex.length < 2)
        hex = "0" + hex
    return hex
}

function fullHexFromRGB(rgb) {
    let colors = rgb.substring(
        rgb.indexOf('(') + 1,
        rgb.indexOf(')')
    ).split(',')
    let hexColors = colors.map(color => hexFromRGB(color))

    return hexColors.join('')
}

document.querySelectorAll(selector).forEach(element => {
    labels.push({
        "name": element.firstElementChild.textContent,
        "description": element.title,
        "color": fullHexFromRGB(getRGBFromElement(element)),
    })
})

console.log(JSON.stringify(labels))