Encountering Syntax Error while running `ionic serve` in IONIC2

I'm stuck on this Syntax error and I can't figure out what went wrong. It keeps showing up even though I copied the code directly from the official ionic2 docs.

SyntaxError:

D:/Manson/Arts/Ionic/IonicTodo2/app/pages/list/list.js
: Unexpected token (14:23) while trying to parse file:
D:\Manson\Arts\Ionic\IonicTodo2\app\pages\list\list.js

To see the full code, please visit this link.

    constructor(nav: NavController) {

Answer №1

It appears that your code is written in plain JavaScript, but you are using types from TypeScript. The line nav: NavController indicates that nav is of type NavController.

When you execute ionic serve, Ionic utilizes webpack to compile and bundle your code. However, since the syntax used is not valid JavaScript, it results in an error.

Ionic 2 is built on Angular 2, which is developed in TypeScript. Although Angular 2 can function with plain JavaScript, it lacks thorough documentation, and TypeScript is recommended for Angular 2 application development.

When initiating a new Ionic 2 project, employ the --ts flag for TypeScript integration. The command should be:

ionic start MyIonic2Project --v2 --ts

Following this step, you should be able to seamlessly follow along with Ionic 2 tutorials.

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