https://github.com/shimondoodkin/node-hot-reload

this is code is outdated. sorry. watchFile and reload modules dynamically for node.js (useful for front end development) - it would be nice if someone could implement the new require.cache support with my require as falback
https://github.com/shimondoodkin/node-hot-reload

Last synced: about 1 month ago
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this is code is outdated. sorry. watchFile and reload modules dynamically for node.js (useful for front end development) - it would be nice if someone could implement the new require.cache support with my require as falback

• Host: GitHub
• URL: https://github.com/shimondoodkin/node-hot-reload
• Owner: shimondoodkin
• Created: 2010-08-11T23:02:01.000Z (over 14 years ago)
• Default Branch: master
• Last Pushed: 2010-10-29T23:00:55.000Z (about 14 years ago)
• Last Synced: 2024-10-19T23:09:25.003Z (3 months ago)
• Language: JavaScript
• Homepage:
• Size: 88.9 KB
• Stars: 50
• Watchers: 3
• Forks: 5
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# node.js hot reload of js files. (it is not restart, more like erlang) 

## hotreload.path

## hotreload.watch(script, reload_callback)

watch script file,  onchange load the script file and call callback

script is string

reload_callback(newmodule) is a function,

it has an argument - the loaded module object.

## hotreload.watch(watchpath, script , reload_callback)

watch one file and load another.

watchpath can be a string or an array

script is string 

## hotreload.watchrel(script, reload_callback)

watch script file relative to @hotreload.path@

## hotreload.watchrel(watchpath, script , reload_callback)

## example:

server.js:

    var http = require('http');

    var hotreload= require('node-hot-reload');

        hotreload.path=__dirname;

    

    //1st require the module normaly

    

    var mymodule= require('./mymodule_example'); 

    

    

    //2nd watch it and reload it dinamicaly

    

    // explained example:

    hotreload.watchrel('mymodule_example.js', function (newmodule){

       /* you can put here staff to make your module

          look like it was initialized well. */

       newmodule.name=mymodule.name; // take care to copy previous data

       //mymodule.init(); // init the module before if possible,

                          // it will save error time.

       // option 1

       // replace reference - probably the best way

       // but you must update all references you have 

       // replace reference - probably the best way

       // but you must update all references you have 

       //mymodule=newmodule;

       //myothermodulereference=newmodule;

       // option 2

       // copy properties from new module to old module

       // as a solution to not having to update

       // references to module object

       hotreload.copy(mymodule,newmodule);

       // option 3

       //   manually patch the old object with parts of the new object.

       // initialization or more initialization after switching to the new module

       // mymodule.init();

       // better don't do it, you may get errors,

       // because of not well-initialized module.

    });

    

    // simple example1:

    //hotreload.watchrel('mymodule_example.js',

    //  function (newmodule){ mymodule=newmodule; } );

      

    // simple example2:

    //hotreload.watchrel('mymodule_example.js',

    //  function (newmodule){ hotreload.copy(mymodule,newmodule); } );

    

    // idea: add loader function to automate reloading of modules:

    //  

    

    mymodule.name="Shimon";

    

    http.createServer(function (request, response) {

    

      try

      {

       response.writeHead(200, {'Content-Type': 'text/plain'});

       response.end(mymodule.time() + '\n');

      }

      catch(err)

      {

       response.end(err.stack);

       console.log(err.stack);

      }

    

      //to do, main module reloadable instead of above you might use: 

      //mymodule.handlerequest(req,res); 

       

    }).listen(8124);

    

    console.log('Server running at http://127.0.0.1:8124/');

mymodule_example.js:

    console.log('mymodule loaded');

    exports.name='test';

    exports.date=(new Date).toString();

    exports.time=function ()

    {

                          //  edit the number to see it working

     return  " test number 17 name: "+exports.name+" , loaded at: "+exports.date.toString();

    }

    exports.filename=__filename;