javascript - Node JS fs module inside browser -

i have scenario want export data csv client-side. have textbox/area or whatever user can input data , ideally 1 click, local csv file updated data.

this achievable nodejs server interaction, , core modules (specifically fs module), apparently not browser.

i found out node modules (for example underscore), support requirejs's method of making particular module work in browser. underscore did this:

methods.js

define(['underscore'],function(_) {      var methods = {         dosomething: function() {              var x = _.size({one: 1, two: 2, three: 3, xuz: 3});              alert(x);         }     };      return methods; }); 

common.js

requirejs.config({     baseurl: 'node_modules',     paths: {         underscore: 'underscore/underscore',     } });  require(['methods'], function(y){     y.dosomething(); }); 

index.html

<script data-main="common" src="require.js"></script> <script> require(['common'], function() {      require(['methods.js']); }); </script> 

the above works fine , show alert: 4.

but when try same fs module won't work. show error:

module name "util" has not been loaded yet context: _. use require([]) 

as far can understand, because fs requires several other modules, 1 of them being util.

so proceeded add these modules requirejs config. still no luck, tested util module doesn't seem require other modules work.

and stuck on error: uncaught referenceerror: exports not defined

i tried modularizing util module encapsulating whole module source code in this:

define([], function() {}) 

but didn't work either... i've tried copying underscore's model still no luck.

so wondering if managed use util & fs modules (or other core nodejs modules) within browser libraries such requirejs or browserify.

that's right, exports node-specific js (used make part of module available outside module) , isn't supported web-browsers. though nodejs technically js, there client specific properties (like window property browsers, , exports nodejs apps) can't interchanged.

that said, here's client side js answer csv problem.