Fetch blob and convert to base64

index.js

export const fetchAsBlob = url => fetch(url)
    .then(response => response.blob());

export const convertBlobToBase64 = blob => new Promise((resolve, reject) => {
    const reader = new FileReader;
    reader.onerror = reject;
    reader.onload = () => {
        resolve(reader.result);
    };
    reader.readAsDataURL(blob);
});

//fetchAsBlob(`https://fonts.gstatic.com/s/roboto/v16/d-6IYplOFocCacKzxwXSOJBw1xU1rKptJj_0jans920.woff2`)
//    .then(convertBlobToBase64)
//    .then(console.log)

Thanks, this was perfect