将图像URI转换为文件或Blob

Question

我可以使用Ionic Image Picker插件获取图像URI ：this.imagePicker.getPictures(options).then((results) => {    for (var i = 0; i < results.length; i++) {        //below logs: 'Image URI: file:///Users/josh.0/Library/Developer/CoreSimulator/Devices/CC0FFBD2-EADF-4489-8F22-7948E0EFD261/data/Containers/Data/Application/2BC3C571-61B7-4EFF-A4D1-4D1F99F04EBC/tmp/cdv_photo_013.jpg'        console.log('Image URI: ' + results[i]);      }}, (err) => { });我需要以文件的形式获取此图像，因此可以上载它。我已尝试执行以下操作，但不起作用：this.imagePicker.getPictures(options).then((results) => {    for (var i = 0; i < results.length; i++) {       console.log('Image URI: ' + results[i]);       let base64Image = "data:image/jpeg;base64," + results[i];         fetch(base64Image)            .then(res => res.blob())            .then(blob => {                //Doesnt fire                console.log("Got blob")                const file = new File([blob], "image.png")         })    }}, (err) => { });如何将图像URI转换为文件？