function isElement(node:any) { return !!(node && (node.nodeName || node.prop && node.attr && node.find)); } export class FileLikeObject { public lastModifiedDate:any; public size:any; public type:string; public name:string; constructor(fileOrInput:any) { let isInput = isElement(fileOrInput); let fakePathOrObject = isInput ? fileOrInput.value : fileOrInput; let postfix = typeof fakePathOrObject === 'string' ? 'FakePath' : 'Object'; let method = '_createFrom' + postfix; (this)[method](fakePathOrObject); } public _createFromFakePath(path:string) { this.lastModifiedDate = null; this.size = null; this.type = 'like/' + path.slice(path.lastIndexOf('.') + 1).toLowerCase(); this.name = path.slice(path.lastIndexOf('/') + path.lastIndexOf('\\') + 2); } public _createFromObject(object:{size: number, type: string, name: string}) { // this.lastModifiedDate = copy(object.lastModifiedDate); this.size = object.size; this.type = object.type; this.name = object.name; } }