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method Deno.Permissions.prototype.requestSync

Requests the permission, and returns the state of the permission.

If the permission is already granted, the user will not be prompted to grant the permission again.

const status = Deno.permissions.requestSync({ name: "env" });
if (status.state === "granted") {
  console.log("'env' permission is granted.");
} else {
  console.log("'env' permission is denied.");
}