method Deno.Permissions.prototype.query

Resolves to the current status of a permission.

Note, if the permission is already granted, request() will not prompt the user again, therefore query() is only necessary if you are going to react differently existing permissions without wanting to modify them or prompt the user to modify them.

const status = await Deno.permissions.query({ name: "read", path: "/etc" });
console.log(status.state);