Promise returning undefined when try to get link of image in functions firebase

I'm trying to get the value of a response from a firebase function, however it is only returning me as undefined, I saw in some article that the body parser doesn't work anymore, I suspect the problem is in my function, but I'm not getting it find the problem, this is my function code, the image image is salve but don't return the 'imageUrl' to save in database

    exports.uploadImage = functions.https.onRequest((request, response) => {
    cors(request, response, () =>{
        try{
            fs.writeFileSync('tmp/imageToSave.jpg',
             request.body.image, 'base64')
            const bucket = storage.bucket('cloneinstagram-b46a9.appspot.com')
            const id = uuid()
            bucket.upload('tmp/imageToSave.jpg',{
                uploadType: 'media',
                destination: `posts/${id}.jpg`,
                metadata:{
                    metadata:{
                        contentType: 'image/jpeg',
                        firebaseStorageDownloadTokens:id
                    }
                }
            },( err, file) => {
                if(err){
                  console.log(err);
                    return response.status(500).json({error: err});
                }else{
                    const fileName = encodeURIComponent(file.name);
                    const imageUrl = 'https://firabasestorage.googleapis.com/v0/b/'+ bucket.name + '/o/' + fileName + '?alt=media&token=' + id;
                    return response.status(201).json({imageUrl: imageUrl})
                }
            }
        )
        }catch(err){
            console.log(err)
            return response.status(500).json({error:err})
        }
    })
 });

and this my mobile code

      axios({
            url: 'uploadImage',
            baseURL: 'https://us-central1-cloneinstagram-b46a9.cloudfunctions.net/',
            method: 'post',
            data:{
                image: posts.image.base64
            }
        })
            .catch(err => console.log('erro', err))
            .then(resp => { 
                posts.image = resp.data.image;
                console.log(' teste image',posts.image)
                axios.post('posts.json', {...posts})
                .catch(err => console.log('teste image', err))
                .then(res => console.log('teste imagem', (res.data.image))) 
            }) 
        }

@EDIT This code solved my problem

exports.uploadImage = functions.https.onRequest((request, response) => {
cors(request, response, () => {

    fs.writeFileSync('tmp/imageToSave.jpg', request.body.image, 'base64')
    const bucket = storage.bucket('cloneinstagram-b46a9.appspot.com')
    const id = uuid()

    bucket.upload('tmp/imageToSave.jpg', {
        uploadType: 'media',
        destination: `posts/${id}.jpg`,
        metadata: {
            metadata: {
                contentType: 'image/jpeg',
                firebaseStorageDownloadTokens: id
            }
        }
    })
        .then(uploadTaskSnapshot => {
            const fileName = encodeURIComponent(file.name);
            const imageUrl = 'https://firabasestorage.googleapis.com/v0/b/' + bucket.name + '/o/' + fileName + '?alt=media&token=' + id;
            return response.status(201).json({ imageUrl: imageUrl })
        })
        .catch(err => {
            console.log(err)
            return response.status(500).json({ error: err })
        })
});

});