ts报错及解决方法

报错问题

    Could not find a declaration file for module '@/export/index'. 'C:/Work/h5-sco/src/export/index.js' implicitly has an 'any' type.   
File 'C:/Work/h5-sco/src/export/index.d.ts' is not a module. 

解决方式：

    1）index.js同级目录增加 index.d.ts，index.d.ts代码:
    2）export declare function dataExportToExcel(columns?: Array<T>, data?: Array<T>): Array<T>;