How to turn off console.log() for production in Cordova / PhoneGap?

Question

How can I turn off the JavaScipt console.log() for production in Cordova / PhoneGap? Disabling the debugging information in the console probably speeds up the mobile app quite a bit.

There are numerous approaches, but none seems to work.

• overriding console.log - e.g., Override console.log(); for production

• Override Cordova DebugConsole.prototype.log - e.g., http://iamcam.wordpress.com/2011/07/26/quiet-the-console-phonegap-ios/

Any working examples? Other feasible approaches?

Answer 1

Wrapping might be a solution. If no 3rd party library is using the actual console and if you only want to use the log method.

var konsole = {
    log: function () {
        if (env === 'dev') {
            console.log(arguments)
        }

    }
}

konsole.log('fff');

env is a replacement for an environment var, which you could get from some kind of registry.

Answer 2

The correct way to do it is to override the Debug Console plugin which on iOS defaults to CDVDebugConsole. Subclass that class then do something like this:

- (void)log:(CDVInvokedUrlCommand*)command
{
    #ifdef DEBUG
        [super log:command];
    #endif
}

Remember to update your config.xml to use the new plugin.

Answer 3

I would recommend using: https://github.com/sunnykgupta/jsLogger

Features:

• It safely overrides the console.log. Takes care if the console is not available (oh yes, you need to factor that too.)
• Stores all logs (even if they are suppressed) for later retrieval.
• Handles major console functions like log, warn, error, info.
• Is open for modifications and will be updated whenever new suggestions come up.

Disclaimer: I am the author of the plugin.