javascript - Data loss in Node.js child process -

i'm trying send data (as object) child process in node.js, however, of regular expressions lost in transfer.

var arguments = {     something: {         name: 'test',               age: 28,        active; true               },     otherthing: 'some string',     regex: /test/i,     regex2: new regexp('test') };  var child = cp.fork(path.join(__dirname, 'child.js'));  child.on('message', function (data) {    console.log(data); });  child.send(arguments); 

in child.js file have @ top:

process.on('message', function () {    console.log(arguments); // data has changed }); 

when log output child process arguments object instead looks this:

{     something: {         name: 'test',         age: 28,         active: true     },     otherthing: 'some string',     regex: {},     regex2: {} } 

so far unable find elsewhere why may happening, ideas?

because separate javascript processes, can't send objects. when pass object, gets serialized json , parsed child. (see the docs.)

json not support serializing regex objects. (try putting json.stringify(/abc/) through console -- "{}".)

to include regexes in json object, can use json-fn module. supports serializing functions, dates, , regexes. (it issue raised added regex support. :))

you like:

var jsonfn = require('json-fn'); var arguments = {     something: {         name: 'test',               age: 28,        active; true               },     otherthing: 'some string',     regex: /test/i,     regex2: new regexp('test') };  var child = cp.fork(path.join(__dirname, 'child.js')); });  child.send(jsonfn.stringify(arguments)); 

and:

var jsonfn = require('json-fn'); process.on('message', function (data) {    console.log(jsonfn.parse(data))); // data has changed });