Add example of specifying GlobalOpts with (sub)Command constructor.

examples/assemble-program.ts

@@ -0,0 +1,11 @@
+import { Command } from '../index.js';
+
+// Example of strongly typed globals in a subcommand which is added to program using .addCommand().
+// Declare factory function for root Command in separate file from adding subcommands to avoid circular dependencies.
+
+export function createProgram() {
+  const program = new Command().option('-g, --global');
+  return program;
+}
+
+export type ProgramOpts = ReturnType<ReturnType<typeof createProgram>['opts']>;

examples/assemble-sub.ts

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+/* eslint-disable @typescript-eslint/no-empty-object-type */
+
+// Example of strongly typed globals in a subcommand which is added to program using .addCommand().
+
+import { Command } from '../index.js';
+import { type ProgramOpts } from './assemble-program.js';
+
+export function createSub() {
+  const program = new Command<[], {}, ProgramOpts>('sub').option('-l, --local');
+  const optsWithGlobals = program.optsWithGlobals();
+  return program;
+}
+
+export type SubOpts = ReturnType<typeof createSub>['opts'];

examples/assemble.ts

@@ -0,0 +1,11 @@
+import { createProgram, type ProgramOpts } from './assemble-program';
+import { createSub, type SubOpts } from './assemble-sub';
+
+// Example of strongly typed globals in a subcommand which is added to program using .addCommand().
+
+export function AssembleProgram() {
+  const program = createProgram();
+  const subCommand = createSub();
+  program.addCommand(subCommand);
+  return program;
+}