IE 11无法从Angular中的字节数组创建文件对象

Question

谁能告诉我IE11为什么会引发错误在其他仅在IE中工作的浏览器中，出现错误“对象不支持此操作”]

let file = new File([files], newFileName, { type: Constants.FILECONTENTTYPE, lastModified: Date.now() });
                let uploadDocument = new UploadDocument();
                uploadDocument.fileName = newFileName;
                uploadDocument.fileItem = file;
                this.fileList = [];
                this.mergedFileList.forEach(fileItem => {
                    this.fileList.push(fileItem);
                });

Answer 1

您需要将import 'core-js/es6/object';添加到polyfill.ts文件中。