The following doesn't compile on master:

for idx i in Array(10): for idx j in Array(10): if i > 3: i

The issue is that the last if is being treated as an expr and the code to ensure a block body was never moved to the array case. I'm submitting a PR with a fix.

If you use one of the non-lodash stdlib methods like looseEq the AST transforms automatically import babel-plugin-lightscript into the final code.

Since babel plugins are devDependencies 100% of the time in the current ecosystem, I don't think most people will realize that they need babel-plugin-lightscript as a dependency rather than a devDependency which means their app may crash when NODE_ENV="production". And I'm not sure making a Babel plugin into a dependency is a good idea even if it is well documented that you need it.

Would you consider just inlining the builtin stdlib methods using AST transforms since they are all oneliners anyway?

While Node 4 is still maintained it might be smart to have this plugin support it. This is especially true since it makes it difficult for third parties using LightScript to maintain node 4 support. Once April 1st 2018 rolls around it can be dropped for good.

For example, my shiny new babel plugin fails to build in my node 4 test environment because this plugin can't be parsed, even though I'm targeting node >= 4.

Should be easy enough to swap out babel-preset-eslatest-node6 for babel-preset-env and set the target, and that's easily updated in a year when node 4 dies. Thoughts?

The z variable in

for elem z in Array(10): z

is getting mangled into _z by scope.push. Babel miraculously corrects all references to z, but this is still incorrect. Sadly we can't use scope.push. Will fix with the other bug.

Currently, this:

fn () ->
  value = 42

  inner () ->
    value

results in this:

function fn() {
  const value = 42;

  function inner() {
    return value;
  }
}

but it inner should be implicitly returned like so:

function fn() {
  const value = 42;

  function inner() {
    return value;
  }

  return inner;
}

Is it posible to compile lightscript via gulp? is there a gulp-lightscript library?