On Mon, Oct 1, 2012 at 7:00 PM, Alexey Petrushin <[email protected]
> wrote:
> > It'd be a great idea to write up a TypeScript header file for the API
> surface in Node.
>
> Can't it be done with plain js? Something like this
>
> // Implementation file.
> fs.readFile = function(name, callback){...}
>
> // Header file with types.
> fs.untypedReadFile = fs.readFile
> fs.readFile = function(name, callback){
> if(!_(name).isString()) throw new Error("name should be a string!")
> fs.untypedReadFile(name, callback)
> }
>
> --
>
An imperative "assertion" is not the same as simply ensuring that your
actual code only ever passes a value of a single specific type.
Rick
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