示例

 import thenFs from "then-fs"

 async function getAllFile(){
   const r1 = await thenFs.readFile('./files/1.txt','utf8')
   console.log(r1)

   const r2 = await thenFs.readFile('./files/2.txt','utf8')
   console.log(r2)

   const r3 = await thenFs.readFile('./files/3.txt','utf8')
   console.log(r3)
 }

 getAllFile()

说明：
await’ expressions are only allowed within async functions and at the top levels of modules.ts(1308)