Quick tip: In your pre-ES2015 callApi() example, token and type would have to be defined above the function call, to be equivalent to the first version.
Otherwise they exist only inside your callback. ;)
The thing is that you can't use token and type in the body of the caller of callApi bc you don't know if the callback was called and it's side-effects were produced.
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Nice article!
Quick tip: In your pre-ES2015 callApi() example,
tokenandtypewould have to be defined above the function call, to be equivalent to the first version.Otherwise they exist only inside your callback. ;)
e.g.:
The thing is that you can't use
tokenandtypein the body of the caller of callApi bc you don't know if the callback was called and it's side-effects were produced.