function Deno.makeTempFile
makeTempFile(options?: MakeTempOptions): Promise<string>
Creates a new temporary file in the default directory for temporary
files, unless `dir` is specified.
Other options include prefixing and suffixing the directory name with
`prefix` and `suffix` respectively.
This call resolves to the full path to the newly created file.
Multiple programs calling this function simultaneously will create
different files. It is the caller's responsibility to remove the file when
no longer needed.
```ts
const tmpFileName0 = await Deno.makeTempFile(); // e.g. /tmp/419e0bf2
const tmpFileName1 = await Deno.makeTempFile({ prefix: 'my_temp' }); // e.g. /tmp/my_temp754d3098
```
Requires `allow-write` permission.
optional
options: MakeTempOptions
Promise<string>