compress.js

import Compress from 'compress.js';

export const compress = image => (
    new Promise((resolve, reject) => {
        const cmp = new Compress()
        const byteString = atob(image.split(',')[1]);
        const mimeType = image.split(',')[0].split(':')[1].split(';')[0];
        let ab = new ArrayBuffer(byteString.length);
        let ia = new Uint8Array(ab);
        for (let i = 0; i < byteString.length; i++) { ia[i] = byteString.charCodeAt(i) };
        let initialBlob = new Blob([ab], { type: mimeType });

        //Tem que passar como array pra essa biblioteca quebrada
        cmp.compress([initialBlob], { size: 10, maxWidth: 500, maxHeight: 500, quality: .8, resize: true })
            .then(output => {
                const outputBase64 = output[0].data;
                const ext = output[0].ext;
                const avatar = Compress.convertBase64ToFile(outputBase64, ext);
                resolve(avatar)
            })
    })
)