Error with serve ionic 2 app ? * will be instances of the `AssertionError` class

Question

When I start ionic serve i got error:

Typescript Error
'{' or ';' expected.
Users/app/node_modules/@types/node/assert.d.ts
 * will be instances of the `AssertionError` class.
 */
class AssertionError extends Error {



Typescript Error
'{' or ';' expected.
Users/app/node_modules/@types/node/assert.d.ts
* An alias of {@link strictEqual}.
*
* **Legacy assertion mode**

What happened here? How to fix this ? I am try to remove node module then npm install ...no work

I am try to go do different node version ... no work..