closure-compile: Compile and compress JavaScript source with the Google Closure Compiler

Version: 5.1.2

closure-compile: Compile and compress JavaScript source with the Google Closure Compiler

This library exposes the Google Closure compiler to Racket.

The module requires runtime access to Java; the value of (find-executable-path "java") should point to a valid Java executable.

(require (planet dyoo/closure-compile:1:2))

(closure-compile code [compilation-level]) → string?

code : string?

	compilation-level		:		(or/c 'whitespace 'simple 'advanced)
			=		'simple

closure-compile takes the given code and passes it to the Closure compiler. It should return a minified version of code. compilation-level adjusts the optimization that the Closure compiler will perform.

If anything bad happens, it will raise an exn:fail and hold the error message in the exception’s exn-message.

Examples:
> (closure-compile "alert('hello ' + 'world');")
"alert(\"hello world\");\n"
> (closure-compile "{this should raise an error")
closure-compile: stdin:1: ERROR - Parse error. missing ;
before statement
stdin:1: ERROR - Parse error. missing } in compound
statement
2 error(s), 0 warning(s)
> (closure-compile "alert('hello, I see: ' + (3 + 4) + '!');"
                   'whitespace)
"alert(\"hello, I see: \"+(3+4)+\"!\");\n"
> (closure-compile "alert('hello, I see: ' + (3 + 4) + '!');"
                   'simple)
"alert(\"hello, I see: 7!\");\n"
> (closure-compile "\n                       var f = function(x) { \n                           return x * x; \n                       };\n                       alert( f(3) );")
"var f=function(a){return a*a};alert(f(3));\n"
> (closure-compile "\n                       var f = function(x) { \n                           return x * x; \n                       };\n                       alert( f(3) );"




                   'advanced)
"alert(9);\n"