function Deno.openSync
openSync(path: string | URL,options?: OpenOptions,): FsFile
Synchronously open a file and return an instance of
[`Deno.FsFile`](../././~/Deno.FsFile). The file does not need to previously exist if
using the `create` or `createNew` open options. The caller may have the
resulting file automatically closed by the runtime once it's out of scope
by declaring the file variable with the `using` keyword.
```ts
using file = Deno.openSync("/foo/bar.txt", { read: true, write: true });
// Do work with file
```
Alternatively, the caller may manually close the resource when finished with
it.
```ts
const file = Deno.openSync("/foo/bar.txt", { read: true, write: true });
// Do work with file
file.close();
```
Requires `allow-read` and/or `allow-write` permissions depending on
options.
optional
options: OpenOptions