CODEWITHSUNDEEP
javascriptrequirejsuglifyjsr.js
Aran Mulholland
Aran Mulholland

Reputation: 23935

r.js optimizer - don't mangle function names

I am using r.js with uglify to minify and concatenate my scripts. I am getting some errors on a production site where the stack trace returned is unintelligible. I would like to temporarily turn off the mangling of function names (variable names are fine) and am having trouble working out how to do this as r.js wraps the configuration options that are passed to uglify.js

The uglify config section in my r,js build config looks like this

uglify: {
      beautify: true,
      indent_start: 0,
      indent_level: 1,
   }

I would like to add the

-nmf or --no-mangle-functions – in case you want to mangle variable names, but not touch function names. (from here)

If i add the line

uglify: {
      beautify: true,
      indent_start: 0,
      indent_level: 1,
      '--no-mangle-functions': true
   }

It does nothing, as does 'no-mangle-functions': true.

How do I pass this option to uglify?

Upvotes: 1

Views: 914

Answers (2)

Ingmars
Ingmars

Reputation: 998

Trying to make uglified/mangled code readable kind of defeats it's purpose in the first place. Probably, what you are after are source maps.

To generate source maps in Uglify just add these options:

uglify: {
    options: {
        sourceMap: 'build.min.map',
        sourceMappingURL: 'build.min.map'
    }
}

Map filename must mirror the final javascript filename:

uglified.js <=> uglified.map

Upvotes: 3

pfried
pfried

Reputation: 5079

From what i can see in the source code of r.js there is no direct differentiation between functions and variable names. But there is an option called no_functions which is actually passed to the uglify section where the default value is false

Passing of options:

https://github.com/jrburke/r.js/blob/master/dist/r.js#L25067

Defaulting no_functionsto false:

https://github.com/jrburke/r.js/blob/master/dist/r.js#L11492

I cannot test it right now, so i am only guessing. Maybe you can try this option

Upvotes: 1

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