Re-enable TypeScript self-test

The latest release of zodern:types is able to pull type declarations
from a Meteor checkout, if it's being used, instead of only from the
package repository (which may not contain the latest changes). This
means that we should be able to re-enable the TypeScript test, which
verifies that the TypeScript skeleton does, in fact, produce a project
which passes type checking.

(Re-enabling the test also picked up a few latent bugs in the type
declarations, so fix those as well)

packages/logging/logging.d.ts

@@ -1,7 +1,7 @@
 type LogJSONInput = {
   message: string;
   app?: string;
-  [index: string]: string | object | number;
+  [index: string]: string | object | number | undefined;
 };
 
 type LogInput = string | LogJSONInput;

packages/meteor/meteor.d.ts

@@ -241,7 +241,7 @@ export namespace Meteor {
   >(
     name: string,
     args: ReadonlyArray<EJSONable | EJSONableProperty>,
-    options?: MethodApplyOptions,
+    options?: MethodApplyOptions<Result>,
     asyncCallback?: (
       error: global_Error | Meteor.Error | undefined,
       result?: Result

tools/tests/typescript.js

@@ -1,27 +1,27 @@
-// var selftest = require('../tool-testing/selftest.js');
-// var Sandbox = selftest.Sandbox;
-//
-// selftest.define("typescript template works", function () {
-//   const s = new Sandbox;
-//
-//   let run = s.run("create", "--typescript", "typescript");
-//
-//   run.waitSecs(60);
-//   run.match("Created a new Meteor app in 'typescript'.");
-//   run.match("To run your new app");
-//
-//   s.cd("typescript");
-//
-//   run = s.run("npm", "install");
-//   run.expectExit(0);
-//
-//   run = s.run("lint");
-//   run.waitSecs(60);
-//   run.match("[zodern:types] Exiting \"meteor lint\" early");
-//   run.expectExit(0);
-//
-//   run = s.run("npx", "tsc");
-//   run.waitSecs(60);
-//   run.expectEnd();
-//   run.expectExit(0);
-// });
+var selftest = require('../tool-testing/selftest.js');
+var Sandbox = selftest.Sandbox;
+
+selftest.define("typescript template works", function () {
+  const s = new Sandbox;
+
+  let run = s.run("create", "--typescript", "typescript");
+
+  run.waitSecs(60);
+  run.match("Created a new Meteor app in 'typescript'.");
+  run.match("To run your new app");
+
+  s.cd("typescript");
+
+  run = s.run("npm", "install");
+  run.expectExit(0);
+
+  run = s.run("lint");
+  run.waitSecs(60);
+  run.match("[zodern:types] Exiting \"meteor lint\" early");
+  run.expectExit(0);
+
+  run = s.run("npx", "tsc");
+  run.waitSecs(60);
+  run.expectEnd();
+  run.expectExit(0);
+});