cloudinary api upolad

cloudinary_upload.ts

    let cloudinary = {
      upload_preset: '',
      url: ''
    }
    async upload(file: Blob) {
        return await new Promise((resolve, reject) => {
            try {
                const myFormData = new FormData();
                myFormData.append("file", file);
                myFormData.append("upload_preset", cloudinary.upload_preset);
                myFormData.append("skipAuthorization", "true");
                fetch(cloudinary.url, myFormData)
                .then(data => {
                    resolve({
                        url: data['secure_url']
                    })
                }).catch((ex: any) => {
                    throw new Error(ex);
                })
            }catch(ex) {
                console.log(ex);
                reject({
                    error: "file upload error"
                })
            }
        });
    }