using node.js with closure library

[ramesh]

The reason I am thinking of something like this is because I want to access Dynamodb and I don't want to use anything more than javascript . I found node.js client for Dynamo on github https://github.com/jed/dynamo.

I have no clue if I can use node.js in my closure js file. I want to know if and how I can use code like this in my closure js file.

var dynamo = require("dynamo")
  , client = dynamo.createClient()
  , db = client.get("us-east-1")

// High-level API

db.get("myTable")
  .query({id: "123", date: {">=": new Date - 6000 }})
  .get("id", "date", "name")
  .reverse()
  .fetch(function(err, data){ ... })

// Same call, using low-level API

db.query({
  TableName: "myTable",
  HashKeyValue: {S: "123"},
  RangeKeyValue: {
    ComparisonOperator: "LE",
    AttributeValueList: [{N: "1329912311806"}]
  },
  AttributesToGet: ["id", "date", "name"],
  ScanIndexForward: false
}, function(err, data){ ... })

Appreciate any help or guidance.

regards,
Ramesh

[Christopher Peisert]

Ramesh,

Have you seen Malte's blog post about experimental support for Common JS and AMD/require.js modules in Closure Compiler? 

Christopher

[ramesh]

Thanks Christopher for the pointer. I get the idea now.

PS. If anyone has ever tried similar with node.js , that would be even more helpful.

regards,
Ramesh

[Peter StJ]

Is the closure compiler able to wrap / process built in modules (like http)? As per the announcement all files need to be in directory processed, and evidently http module is not.

On the other hand the code is pretty clean and with very little tweaks can be ported to use closure library instead of the built in modules. 

[ramesh]

Thanks Peter for your input. I found this http://www.bramstein.com/projects/calcdeps.js/  , node.js port of closure library and probably this would help me achieve my goal.

regards,
Ramesh

[ramesh]

On 06/08/2012 05:35 AM, Peter StJ wrote:

For someone who might be attempting the same, there is some work on github.

https://github.com/bolinfest/node-google-closure-latitude-experiment
And it says.

" Here, I am trying to take a different approach, in which JavaScript is written in the style of the Closure Library, and the Node APIs are exposed as externs so that the application code can be compiled using the Advanced mode of the Closure Compiler, in order to maximize the amount of static checking and dead code elimination that can be done."


Ramesh

[Peter StJ]

I believe it was not clear if you are to use the code on node server or in the browser. 

If the later is true, I do not see how any of those projects would help achieve the goal.

If on the other hand the point is to run on node server, the latest mentioned links are the right way. I have used nclosure to allow tests to be run on non-dom code written for the browser on server instances with node and it is awesome. 

[ramesh]

Thanks Peter,

 Sorry, I wasn't very clear initially. I just wanted to use Node as externs in Closure similar to https://github.com/bolinfest/node-google-closure-latitude-experiment. But I think I will give nclosure a try as this approach looks interesting.

regards,
Ramesh

[Christopher Peisert]

Additional discussion threads for using Node.js with Closure:

1) Trying to create an extern for a Node module

2) Getting closure-compiler and Node.js to play nice

On Thursday, June 7, 2012 9:59:29 AM UTC-7, Ramesh wrote:

[ramesh]

Thanks Christopher, that was helpful.

regards,
Ramesh