Drop debug(...) calls using PatternJS

drop-debug.js

var U = require("uglify-js");
var fs = require("fs");
var sys = require("sys");

var code = fs.readFileSync("/tmp/test.js", "utf8");

// 1. parse
var ast = U.parser.parse(code);

// 2. UglifyJS compress
ast = U.uglify.ast_mangle(ast);
ast = U.uglify.ast_squeeze(ast);

// drop debug(...) calls using PatternJS
// https://github.com/mishoo/PatternJS
var P = require("pattern");
var pattern = P.compile([ "call", [ "name", "debug" ]]);
P.search(ast, pattern, function(m){
        m.$match().replace([]);
});

// regenerate code
code = U.uglify.gen_code(ast);

sys.puts(code);