function Deno.readTextFile
readTextFile(path: string | URL,options?: ReadFileOptions,): Promise<string>
Asynchronously reads and returns the entire contents of a file as an UTF-8
decoded string. Reading a directory throws an error.
```ts
const data = await Deno.readTextFile("hello.txt");
console.log(data);
```
Requires `allow-read` permission.
optional
options: ReadFileOptions
Promise<string>