Build a library of modules in PureScript

[rvdalen]

Hi everyone,

I want to use PureScript to build a library that I can call from normal JavaScript.
I am not sure how to do this?

The command I normally use to generate JS is:  `pulp build --to dist/resources/app/output.js`, but this eliminates any
other modules I have defined, but have not used (because of dead code elimination).

I do not need or care about a Main module.  I just want to define a bunch of my own modules
in PureScript and have those (and their dependencies) available in the browser.

How can I get pulp to generate such output?

Regards
--Rouan

[Phil Freeman]

Hi Rouan,

You can do this using pulp build without the --to option. You'll get a bunch of common js modules in the output directory.

Thanks,

Phil.

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[rvdalen]

 Hi Phil,

Thanks, will this remove any unused modules that I do not refer to in my

own modules?  I still want the dead code elimination for things I do not use in

any of my modules.

Regards

--Rouan

 

[rvdalen]

Hi Phil,

I still want all the modules to be combined into 1 `.js` file for use in the browser.

If I remember correctly, I did try that option and pipe stdout to a .js file, but that gave me a huge

javascript file.

It would be nice if there was a command to tell pulp we are building a library instead of a

run-able program, just including the dependencies my own modules reference.  Is there something

like that?

Thanks for all the help.

I really appreciate it.

Regards

--Rouan

[Louis Pilfold]

Hi Rouan

If you're building multiple modules you'll need to output multiple files as in JavaScript one module is one file.

Once you have written your program with these modules you can use browserify, webpack or similar to bundle your code into one file.

Cheers,
Louis

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[Nicholas Wolverson]

pulp build --to out.js --skip-entry-point --modules MyExtraModule 

I think this should perform DCE starting from the given set of modules (also check --main), and output to a single file containing a variable binding of the PS object (a map of all built modules), you can append a postscript to that JS file to bind this to a global, or export what you want.

pulp can also help you with browserify - maybe check here https://github.com/purescript-contrib/pulp#reimporting-browserified-bundles

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[rvdalen]

Thanks everyone,

I will try out the suggestions a bit later in the week.

Regards
--Rouan