test1.ts引入test2.ts文件我怎么在test1中獲取test2中某個(gè)方法的返回值如：test2是這樣：openAlbum(){const options = {quality: 100,maximumImagesCount: 6,};let _this = this;this.imagePicker.getPictures(options).then((results) => {_this.uploader.pathArrayToDataURL(results,(dataurls)=>{_this.imgArr.concat(dataurls); });}, (err) => { alert('failed') });} 現(xiàn)在我要在test1中獲取dataurls  怎么拿到