Box2D Debug Draw JavaScript

cocos2d-x JavaScript
1

I am trying to get debug draw to work using JavaScript. Cocos2Dx version 3.7

After creating debug draw, I try to set the sprite, but canvas.getContext is undefined:

debugDraw.SetSprite(document.getElementById('gameCanvas').getContext('2d'));

console.log(debugDraw.GetSprite()); = null
this.world.DrawDebugData(); // <-- FAIL

_renderContext and _drawingUtil will also fail:

debugDraw.SetSprite(cc._renderContext);

this.world.DrawDebugData(); // <-- FAIL

How can I enable Box2D debugDraw? Thanks.