fix(ts): Add typeof' in @type of assert

Using import("assert").strict appears to cause TypeScript to enter an
infinite loop. This prevented type checking from working properly in the
test suite.

Workaround: Add 'typeof' at the beginning of the @type annotation.

Possibly related issue:
  microsoft/TypeScript#36830

Author: pastelmind

test/interpreter.js

@@ -2,7 +2,7 @@
 
 // Explicit type annotation is needed to suppress TypeScript error.
 // See https://stackoverflow.com/a/59229771/ for more information.
-/** @type {import("assert").strict} */
+/** @type {typeof import("assert").strict} */
 const assert = require("assert").strict;
 
 const interpret = require("../src/interpreter.js");

test/lexer.js

@@ -2,7 +2,7 @@
 
 // Explicit type annotation is needed to suppress TypeScript error.
 // See https://stackoverflow.com/a/59229771/ for more information.
-/** @type {import("assert").strict} */
+/** @type {typeof import("assert").strict} */
 const assert = require("assert").strict;
 
 const tokenize = require("../src/lexer.js");

test/parser.js

@@ -2,7 +2,7 @@
 
 // Explicit type annotation is needed to suppress TypeScript error.
 // See https://stackoverflow.com/a/59229771/ for more information.
-/** @type {import("assert").strict} */
+/** @type {typeof import("assert").strict} */
 const assert = require("assert").strict;
 
 const parse = require("../src/parser.js");