when i return something in init(), and then i can not call all methods about stampit HOT 10 CLOSED

Thanks for the question!

Here is a quote from our docs

If you return anything from an initializer then it becomes the object instance.

Feel free to ask any other questions. 👍

Cheers

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and then, how can i get a stamp when i return an object in init method.

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describe what is my target: i want a new object that has two feature:

1. IT copy all property from another object, that object from json, so it is different every time.
2. It is a stamp, example a mckpoint.
   and how can i get the target? thank you.

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Hello @lornally

Looks like you need to understand the basics of stamps. I'd highly recommend going through this little article: https://medium.com/@koresar/fun-with-stamps-episode-1-stamp-basics-e0627d81efe0

It's very easy to solve your problem. :)
Do not create new objects inside the init. Think of init as a class constructor. Use this.

    .init(function({ lng, lat, info, ...p }) {
      t.p = p;
      t.lng = lng;
    })

Does that answer?

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actually, i write code like this:

const mckpath = stampit()
  .init(function init({ start, end, list, ...p }) {
    this.start = mpoint(start);
    this.end = mpoint(end);
    this.train = train({ list });
  Object.keys(p).forEach(e => { //here i got all last property, but can we elegant more
      this[e] = p[e];
    });
  }) 

i use object.key got all property, but can we do it more elegant?
and i will read tho topic, thank you:)
and your code should use function not =>, because use 'this'

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Thanks for the correction about =>. Indeed there should be function. Corrected now.

Instead of the forEach you should use Object.assign(this, p);

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thank you very much, and can we do it more elegant than object.assign?

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Yep. Here is my favourite method
https://www.npmjs.com/package/@stamp/arg-over-prop

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thank you, you are really nice:) i will learn your suggest:)
and i have see arg-over-prop, that is a good solution.

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Thank you for the kind words mate!
Feel free to contact any time.

Cheers

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