esshorten

• support shortten module script, vars define in module can be shortten
• mangle support two new Config: ecmaVersion, sourceType which is support in escope

esshorten

esshorten provides name mangler, this shorten names in JavaScript code. mangler accepts JavaScript AST and generate modified AST with shortened names.

usage

We can use this with,

esshorten.mangle(AST);

And we can pass options to mangler,

esshorten.mangle(AST, {
    // If false, AST is copied deeply (default: true)
    destructive: false,
    // If false, avoid [JSC bug](https://github.com/mozilla/sweet.js/issues/138) (default: false)
    distinguishFunctionExpressionScope: false,
    ecmaVersion: 6 //  5 , 6,
    sourceType: 'script' // script or module, nodejs using module type
});

When destructive option is set to false, esshorten copies AST and modifies it.

license

Copyright (C) 2013 Yusuke Suzuki (twitter: @Constellation) and other contributors.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.