deno/cli/rt/40_permissions.js

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.

((window) => {
  const { sendSync } = window.__bootstrap.dispatchJson;

  function opQuery(desc) {
    return sendSync("op_query_permission", desc).state;
  }

  function opRevoke(desc) {
    return sendSync("op_revoke_permission", desc).state;
  }

  function opRequest(desc) {
    return sendSync("op_request_permission", desc).state;
  }

  class PermissionStatus {
    constructor(state) {
      this.state = state;
    }
    // TODO(kt3k): implement onchange handler
  }

  class Permissions {
    query(desc) {
      const state = opQuery(desc);
      return Promise.resolve(new PermissionStatus(state));
    }

    revoke(desc) {
      const state = opRevoke(desc);
      return Promise.resolve(new PermissionStatus(state));
    }

    request(desc) {
      const state = opRequest(desc);
      return Promise.resolve(new PermissionStatus(state));
    }
  }

  const permissions = new Permissions();

  window.__bootstrap.permissions = {
    permissions,
    Permissions,
    PermissionStatus,
  };
})(this);