React - Minified exception occurred

Question

I have React js installed via NPM and using browserify to manage components in react. When an exception occurs in React, the console shows as

\"Uncau

Answer 1

I got this error when my render method returned undefined eg

render() {
    let view;
    // Not paying attention and slip a case where view won't get assigned a value
    if(this.props.foo == 'hello') {
        view = 
    }
    else if(this.props.foo == 'bye') {
        view = 
    }
    return view;
}

This will trigger the error when this.props.foo is 'hi'