autoreload a server

README.txt

depends on http://github.com/mikeal/watch

autoreload.js

var watch = require( 'watch' ),
    path = require( 'path' ),
    spawn = require('child_process').spawn
;

function autoreload( opt ) {
    var child = null, ranOnce = false;

    function start( ) {
        child = spawn( opt.command, opt.args );
        child.stdout.on( 'data', function( data ) {
            console.info( data.toString( 'utf8' ) );
        } );
        child.stderr.on( 'data', function( data ) {
            console.error( data.toString( 'utf8' ) );
        } );
    };

    function stop( ) {
        if( child ) {
            child.kill( 'SIGTERM' );
        }
    };

    start( );
    watch.watchTree( opt.watch, { ignoreDotFiles: true }, function( f, curr, prev ) {
        if( curr ) { 
            if( ranOnce ) { // ingore first callback
                console.info( 'Restarting...' );
                stop( );
                start( );
            } else {
                ranOnce = true;
            }
        }
    } );
}

autoreload( {
    command: 'node',
    args: [ path.join( __dirname, 'server.js' ) ],
    watch: __dirname
} );