export default function getBase64(file){
    return new Promise((resolve, reject)=>{
        const reader = new FileReader()
        let imgResult = ""
        reader.readAsDataURL(file)
        reader.onload = ()=>{
            imgResult = reader.result
        }
        reader.onerror = (err)=>{
            reject(err)
        }
        reader.onloadend = ()=>{
            resolve(imgResult)
        }
    })
}

getBase64(file.raw).then(res=>{
     const params = res.split(",")
     if(params.length > 0){
       var pngBase64 = params[1];
     }
     this.form.imgUrl = pngBase64;
})