javascriptlivescriptprelude.ls

Use prelude-ls with LiveScript

I just need to use prelude-ls library in LiveScript, but no from the REPL. In my little test, I have 4 files:

I have the latest version of require.js (2.1.15) and in my main.htm I load the scripts:

<!DOCTYPE html>
<html>
    <head>
        <script src="./require.js" type="text/javascript"></script>
        <script src="./prelude.js" type="text/javascript"></script>
    </head>
    <body>

    </body>
</html>

Then, I go to my application.ls to test:

require! 'prelude-ls'

[1 2 3] |> prelude-ls.map (* 2)

My compile command is:

lsc -cwd $myFilePath And it compiles just fine. Then, I go there to get the final result, to test and receive the following error:

Uncaught Error: Module name "prelude-ls" has not been loaded yet for context: _. Use require([])

Well, I saw the this is a very common error and its corrections would happen in the js file, not in the ls and none of the links I followed solved my problems. I've tried it in 2 computers and had the really same result.

My final js file, application.js is:

// Generated by LiveScript 1.2.0
(function(){
  var preludeLs;
  preludeLs = require('prelude-ls');
  preludeLs.map((function(it){
    return it * 2;
  }))(
  [1, 2, 3]);
}).call(this);

Plase, help me if possible. I really read all the documentation of livescript and it doens't cites its first use with prelude-ls.

Solution

  • I think you're confusing AMD.js (here, Require.JS) and CommonJS. AMD.js uses the

    require(['dep1', 'dep2'], function (dep1, dep2) {
  dep1.callSomething();
});

    (this allows for async loading)

    CommonJS (which is what prelude-ls uses), on the other hand, is basically what node does (and what we generate with require!):

    var preludeLs = require('prelude-ls')