Uncaught SyntaxError ":" in recursive function signature

[peternroth]

Uncaught SyntaxError C:\Users\Owner\Documents\TS\HelloWorlds\HelloHanoi\hanoi.ts:19
height: number,
^

function moveTower(
height: number,
fromPole: string,
toPole: string,
withPole: string
): void {
if (height >= 1) {
// Move tower of height-1 to an intermediate pole, using the destination pole.
moveTower(height - 1, fromPole, withPole, toPole);

// Move the remaining disk to the destination pole.
console.log(`Move disk from ${fromPole} to ${toPole}`);

// Move the tower of height-1 from the intermediate pole to the destination pole using the source pole.
moveTower(height - 1, withPole, toPole, fromPole);

}
}

// Call the function with the initial parameters.
moveTower(3, "A", "C", "B");

[jakebailey]

You are attemping to execute TypeScript without compiling it to JavaScript, hence the error on the : token. You'll need to run tsc and then execute its output, or use a tool such as ts-node or tsx to run your script directly.

[peternroth]

Thanks, jakebailey!