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denoland-deno/js/permissions.ts
Ryan Dahl d43b43ca78
Refactor snapshot build (#2825)
Instead of using core/snapshot_creator.rs, instead two crates are
introduced which allow building the snapshot during build.rs.

Rollup is removed and replaced with our own bundler. This removes
the Node build dependency. Modules in //js now use Deno-style imports
with file extensions, rather than Node style extensionless imports.

This improves incremental build time when changes are made to //js files
by about 40 seconds.
2019-09-02 17:07:11 -04:00

39 lines
1.2 KiB
TypeScript

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import * as dispatch from "./dispatch.ts";
import { sendSync } from "./dispatch_json.ts";
/** 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 });
}