Example of excludeMain option is not correct

[DanSnow]

fn.method = (data, callback) => {
    setImmediate(() => {
        callback(data, null);
    });
};

Here call the callback with data, error order .
But the order shouldn't be error, data?

promiseFn.method('hi').then(data => {
    console.log(data);
});

The promise return by the method will be rejected.
Here is a code snippet on runkit.

[schnittstabil]

Pify only supports only Node.js style callbacks, from the API documentation:

[…] the callback function is called with the Error object (if any) passed as the first argument. If no error was raised, the first argument will be passed as null.

function nodeStyleCallback(err, data) {…}

@DanSnow Thus your issue is somehow a duplicate of #31.

[DanSnow]

I'm not requesting a support for non-Node.js style API.
I mean that current readme.md has an error in examples.
I have opened a pull request #40.

[schnittstabil]

👍 Many thanks for clarification.