interface Deno.ReadFileOptions
Options which can be set when using [`Deno.readFile`](../././~/Deno.readFile) or
[`Deno.readFileSync`](../././~/Deno.readFileSync).
optional
signal: AbortSignal
An abort signal to allow cancellation of the file read operation.
If the signal becomes aborted the readFile operation will be stopped
and the promise returned will be rejected with an AbortError.