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denoland-deno/js/permissions.ts
2019-08-26 08:50:21 -04:00

39 lines
1.1 KiB
TypeScript

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import * as dispatch from "./dispatch";
import { sendSync } from "./dispatch_json";
/** Permissions as granted by the caller */
export interface Permissions {
read: boolean;
write: boolean;
net: boolean;
env: boolean;
run: boolean;
hrtime: boolean;
// NOTE: Keep in sync with src/permissions.rs
}
export type Permission = keyof Permissions;
/** Inspect granted permissions for the current program.
*
* if (Deno.permissions().read) {
* const file = await Deno.readFile("example.test");
* // ...
* }
*/
export function permissions(): Permissions {
return sendSync(dispatch.OP_PERMISSIONS) as Permissions;
}
/** Revoke a permission. When the permission was already revoked nothing changes
*
* if (Deno.permissions().read) {
* const file = await Deno.readFile("example.test");
* Deno.revokePermission('read');
* }
* Deno.readFile("example.test"); // -> error or permission prompt
*/
export function revokePermission(permission: Permission): void {
sendSync(dispatch.OP_REVOKE_PERMISSION, { permission });
}