javascript - JSHint "Possible strict violation." when using `bind`

Question

Consider this simple code:

"use strict";

var obj = {
    f: function() {
        this.prop = 'value';
        g.bind( this )();
    }
};

function g() {
    console.log( this.prop );
}

If I try to validate this code, jshint gives me the error Possible strict violation. where I call console.log( this.prop );. This is because this is undefined in strict mode in a function.

But I'm binding this function before calling it, so this is the correct object.

I'm using this "design pattern" to avoid cluttering the main object. Passing the properties in the parameters will also clutter the function, so I refuse to do this. Besides, this is exactly what bind is for.

Is there a way for JSHint to let me do this?

Answer 1

It is extremely hard to detect this case without running the code. You can use option validthis to suppress this warning:

"use strict";

var obj = {
    f: function() {
        this.prop = 'value';
        g.bind( this )();
    }
};

function g() {
    /*jshint validthis:true */
    console.log( this.prop );
}

It is to be noted that jshint comments are function scoped. So the comment will work for the function g and its inner functions, not just the next line.