How to insert a comment in the generated javascript file?

[Yehonathan Sharvit]

How to insert a comment in the generated javascript file?

1. In simple compilation mode
2. In advanced compilation mode

[Daniel Kersten]

You could use :preamble to prepend a file to the generated output.

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[Yehonathan Sharvit]

I am not able to make it work. Where should I put the file? In the same folder as project.clj?

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[Daniel Kersten]

I believe it needs to be on the classpath. For example, I put my js files in resources/assets (where resources is in the same directory as project.clj) and I use preamble like this:

:compiler {

  :preamble ["assets/js/myfile.js"]

  ; other compiler options

[Yehonathan Sharvit]

It works now. Thanks.

But what is this “resources” folder?

Is it hard-coded in the cljs compiler? Where is it documented?

[Daniel Kersten]

If you use `lein new` it should have been created for you. Its a directory that gets added to the classpath and is typically used for non-code resources and by default is "resources". You can change it (or add other directories to it) by setting :resource-paths in your project.clj:

https://github.com/technomancy/leiningen/blob/983847276d12fcdac7a5b5eabbd5dfcb926087d7/sample.project.clj#L276