Quoting from this [blog post][1]:

&gt; **Entry point** is the javascript file that will be invoked when consumers
&gt; of your module “require” it, this file will include the main logic for
&gt; your module, or if it is a large module you can export public
&gt; functions found with other files (typically in the lib directory)

So it should be your `app.js` file.

  [1]: http://www.mattpalmerlee.com/2013/04/23/create-your-first-node-module-and-publish-it-to-the-npm-registry/

For any project, entry point is the file from which execution starts. It depends on project configuration and run time environment of the technology we are using.

Examples : For a node.js project **app.js** is used initializes the app and glues everything together.


Entry point is the path that your users will access using the index.js to be able to access the full view and services of your module I will rather leave it the way it is if you do not know what you are doing.

Is there a simple way to convert a `LocalDate` (introduced with Java 8) to `java.util.Date` object?  

By &#39;simple&#39;, I mean simpler than this:  

    Date date = Date.from(localDate.atStartOfDay(ZoneId.systemDefault()).toInstant());

which seems a bit awkward to me. 
 
Since we are interested only in the date portion and there is no timezone information in neither of the objects, why introduce time zones explicitly? The midnight time and the system default timezone should be taken implicitly for the conversion.


LocalDate to java.util.Date and vice versa simplest conversion?

I know that if I use [`randn`](https://numpy.org/doc/stable/reference/random/generated/numpy.random.randn.html),

    import pandas as pd
    import numpy as np
    df = pd.DataFrame(np.random.randn(100, 4), columns=list(&#39;ABCD&#39;))

gives me what I am looking for, but with elements from a normal distribution. But what if I just wanted random integers?

`randint` works by providing a range, but not an array like `randn` does. So how do I do this with random integers between some range?

How to create a DataFrame of random integers with Pandas?

I have an empty new project, when i run npm init i got a list of questions to answer, for example:
    
    name: (karma)
    version: (1.0.0)
    description:my project description
    entry point: (index.js)


I am really confused about the one that says &quot;entry point&quot;, Should this be my index.html file or my app.js or is it something else?

What is &quot;entry point&quot; in npm init

I have an empty new project, when i run npm init i got a list of questions to answer, for example:
<pre><code class="hljs language-makefile">name: (karma)
version: (1.0.0)
description:my project description
entry point: (index.js)
</code></pre>
I am really confused about the one that says "entry point", Should this be my index.html file or my app.js or is it something else?

I am using TypeScript 1.6 with ES6 modules syntax.

My files are:

**test.ts:**

    module App {
      export class SomeClass {
        getName(): string {
          return &#39;name&#39;;
        }
      }
    }

**main.ts:**

    import App from &#39;./test&#39;;
    
    var a = new App.SomeClass();

When I am trying to compile the `main.ts` file I get this error:

&gt; **Error TS2306: File &#39;test.ts&#39; is not a module.**

How can I accomplish that?

TypeScript ES6 import module &quot;File is not a module error&quot;

I have the code below in my render of parent

    &lt;div&gt; 			
    {
        this.state.OSMData.map(function(item, index) {
            return &lt;Chart key={index} feature={item} ref=&quot;charts&quot; /&gt;
        })
    }
    &lt;/div&gt;


And code below in my child Chart

    &lt;div className=&quot;all-charts&quot;&gt;
        &lt;ChartistGraph data={chartData} type=&quot;Line&quot; options={options} /&gt;
    &lt;/div&gt;

I thought the componentDidMount of parent is called only after all childs are loaded. But here the componentDidMount of parent is called before the componentDidMount of child.

Is this how things work? Or am I doing something wrong.

If this is how things work, how would I detect when all the child components are loaded from parent?

Is componentDidMount of parent called after all componentDidMount of children?

I know this has been asked many times before but answers were not descriptive enough to solve my problem. I don&#39;t want to change the whole URL of page. I want to append a parameter `&amp;item=brand` on button click without refresh.

Using `document.location.search += &#39;&amp;item=brand&#39;;` makes the page refresh.

Using `window.location.hash = &quot;&amp;item=brand&quot;;` append without refresh but with a hash `#` which eliminates the usage/effect of the parameter. I tried to remove the hash after appending but that didn&#39;t work.

----------


[This answer][1] and many others suggest the use of HTML5 History API, specifically the `history.pushState` method, and for old browsers is to set a fragment identifier to prevent page from reloading. But how?


----------


Assuming the URL is: `http://example.com/search.php?lang=en`

How can I append `&amp;item=brand` using HTML5 pushState method or a fragment identifier so the output would be like this: `http://example.com/search.php?lang=en&amp;item=brand` without a page refresh?


----------


I hope someone can throw some light on how to use the HTML5 pushState to append a parameter to an existing/current URL. Or alternatively how to set a fragment identifier for the same purpose. A good tutorial, demo or piece of code with a little explanation would be great.

[Demo][2] of what I&#39;ve done so far. Your answers would be greatly appreciated.


  [1]: https://stackoverflow.com/a/10445250/2321603
  [2]: http://jsfiddle.net/pwsubLx4/

Appending parameter to URL without refresh

I&#39;m using Redux, redux-router and reactjs.
 
I&#39;m trying to make an app where I fetch information on route change, so, I&#39;ve something like:

    &lt;Route path=&quot;/&quot; component={App}&gt;
        &lt;Route path=&quot;artist&quot; component={ArtistApp} /&gt;
        &lt;Route path=&quot;artist/:artistId&quot; component={ArtistApp} /&gt;
    &lt;/Route&gt;

When someone enters to `artist/&lt;artistId&gt;` I want to search for the artist and then render the information. The question is, what it&#39;s the best way of doing this?

I&#39;ve found some answers about it, using RxJS or trying a middleware to manage the requests. Now, my question is, Is this really necessary or just a way to keep the architecture react-agnostic? Can I just fetch the information I need from react componentDidMount() and componentDidUpdate() instead? Right now I&#39;m doing this by triggering an action in those functions that request information and the component re-renders when the information has arrived. The component has some properties for letting me know that:

    {
        isFetching: true,
        entity : {}
    }

Thanks!

How to fetch the new data in response to React Router change with Redux?

Why does adding `&lt;/script&gt;` in a comment break the parser? Is this a bug or is there something in the documentation I&#39;ve overlooked?

I&#39;ve tested this in Chrome, Firefox, Opera, Internet&amp;nbsp;Explorer and they all produce the same result.

**Single-line comment:**

&lt;!-- begin snippet: js hide: false --&gt;

&lt;!-- language: lang-js --&gt;

    function Foo(){
      // &lt;/script&gt;
      alert(&quot;bar&quot;);
    };

    Foo();

&lt;!-- end snippet --&gt;

**Multi-line comment:**

&lt;!-- begin snippet: js hide: false --&gt;

&lt;!-- language: lang-js --&gt;

    function Foo(){
      /*
          &lt;/script&gt;
      */
      alert(&quot;bar&quot;);
    };

    Foo();

&lt;!-- end snippet --&gt;



Why does adding &lt;/script&gt; in a comment break the parser?

Below is my code
    
    var mongoose = require(&#39;mongoose&#39;);
    mongoose.connect(&#39;mongodb://localhost/test&#39;);

    var Cat = mongoose.model(&#39;Cat&#39;, {
        name: String,
        age: {type: Number, default: 20},
        create: {type: Date, default: Date.now} 
    });

    Cat.findOneAndUpdate({age: 17}, {$set:{name:&quot;Naomi&quot;}},function(err, doc){
        if(err){
            console.log(&quot;Something wrong when updating data!&quot;);
        }

        console.log(doc);
    });

I already have some record in my mongo database and I would like to run this code to update name for which age is 17 and then print result out in the end of code.

However, why I still get same result from console(not the modified name) but when I go to mongo db command line and type &quot;`db.cats.find();`&quot;. The result came with modified name.

Then I go back to run this code again and the result is modified.

My question is:  If the data was modified, then why I still got original data at first time when console.log it.

 

Mongoose: findOneAndUpdate doesn&#39;t return updated document

So I made the mistake of trying to get rid of all sudo dependencies. I downloaded npm as a package from the site and did a manual/global install. But it seemed as if i was always having to run with sudo...so I tried to uninstall and run with homebrew.

Now I can&#39;t get node or npm to even run...I guess I have to link with brew link them but i&#39;m getting this error:

    Could not symlink share/doc/node/gdbinit
    Target /usr/local/share/doc/node/gdbinit
    already exists. You may want to remove it:
      rm &#39;/usr/local/share/doc/node/gdbinit&#39;


I&#39;ve tried removing that:
And i&#39;ve gotten permission denied.

I have tried running brew prune.
I have tried to uninstall then reinstall using these steps:

    $ brew uninstall npm
    $ brew uninstall node
    $ npm uninstall npm -g
    $ sudo rm -rf /usr/local/lib/node_module

https://stackoverflow.com/questions/12607155/error-the-brew-link-step-did-not-complete-successfully

I am running Yosemite 10.10.5. I have git version 2.6.0 installed. My homebrew is updated. A brew doctor gives me this warning:

    Warning: You have unlinked kegs in your Cellar
    Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
    those kegs to fail to run properly once built. Run `brew link` on these:
        node

 Not sure where to go from here. I&#39;m trying to lose my reliance on CodeKit and get gulp up and running.

Homebrew npm install: could not symlink

I need to webpack all the js file in the script folder.I tried this 

    module.exports = {
      module: {
        loaders: [
          {
            test: /\.js$/,
            exclude: /node_modules/,
            loaders: [&quot;babel-loader&quot;],
          }
        ],
      },
      entry: &quot;./src/scripts/*.js&quot;,
      output: {
        path: &#39;./src/build&#39;,
        filename: &#39;[name].js&#39;
      }
    };
 I am getting  error like this,

    ERROR in Entry module not found: Error: Cannot resolve &#39;file&#39; or &#39;directory&#39; ./s
    rc/scripts/* in E:\Web project\ReactJS\react-tutorial
    resolve file
      E:\Web project\ReactJS\react-tutorial\src\scripts\* doesn&#39;t exist
      E:\Web project\ReactJS\react-tutorial\src\scripts\*.webpack.js doesn&#39;t exist
      E:\Web project\ReactJS\react-tutorial\src\scripts\*.web.js doesn&#39;t exist
      E:\Web project\ReactJS\react-tutorial\src\scripts\*.js doesn&#39;t exist
      E:\Web project\ReactJS\react-tutorial\src\scripts\*.json doesn&#39;t exist
    resolve directory
      E:\Web project\ReactJS\react-tutorial\src\scripts\* doesn&#39;t exist (directory d
    efault file)
      E:\Web project\ReactJS\react-tutorial\src\scripts\*\package.json doesn&#39;t exist
     (directory description file)
It is not searching for all the js file instead it is searching for *.js like that.Help me out what I missed 

How to add wildcard mapping in entry of webpack

The code snippet shown below works great for obtaining access to the stdout of a system command.  Is there some way that I can modify this code so as to also get access to the exit code of the system command and any output that the system command sent to stderr?

    #!/usr/bin/node
    var child_process = require(&#39;child_process&#39;);
    function systemSync(cmd) {
      return child_process.execSync(cmd).toString();
    };
    console.log(systemSync(&#39;pwd&#39;));

node.js - Accessing the exit code and stderr of a system command

So the code is simple:

calls.json
   
    {&quot;SERVER&quot;:{
        &quot;requests&quot;:{
          &quot;one&quot;:&quot;1&quot;
        }
    } }

file.ts

    import json = require(&#39;../static/calls.json&#39;);
    console.log(json.SERVER);

the generated javascript is correct and when running the node js server, the console log json.SERVER prints &#39;{ requests: { one: &#39;1&#39; } }&#39;, as it should.

The typescript compiler (commonjs) however, somehow does not particularly like this situation and throws: &quot;Cannot find module &#39;../static/calls.json&#39;&quot;.

Ofcourse I tried writing a .d.ts file, like this:

    declare module &#39;../static/calls.json&#39;{
        var exp:any;
        export = exp;
    }

this then obviously throws: &quot;Ambient module declaration cannot specify relative module name&quot;.

I also tried different variants, like:

    declare module &#39;calls.json&#39; {
        import * as json from &#39;/private/static/calls.json&#39;;
        export = json;
    }
and then requiring:

    import json = require(&#39;calls.json&#39;);

None work properly and have their own little compiler errors :)

I want to use an external .json file because I use commonjs serverside and amd clientside and I want a single file for loading constants.

Typescript compiler error when importing json file

I can&#39;t get npm to work. My package.json file has

    &quot;scripts&quot;: { &quot;build&quot;: &quot;build.js&quot; }
and I have a build.js file in the same folder that just console.logs.

When I run 

    npm run build
I get the error 
    

    The system cannot execute the specified program.
	
	npm ERR! Windows_NT 6.1.7601
	npm ERR! argv &quot;C:\\Program Files\\nodejs\\node.exe&quot; &quot;C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js&quot; &quot;run&quot; &quot;build&quot;
	npm ERR! node v4.1.1
	npm ERR! npm  v3.3.5
	npm ERR! code ELIFECYCLE

and if I move the build.js file and change my package.json file to have a subfolder

    &quot;scripts&quot;: { &quot;build&quot;: &quot;build/build.js&quot; }

then I get the error

    &#39;build&#39; is not recognized as an internal or external command, operable program or batch file.

What&#39;s going wrong? I&#39;m copying the [example documentation][1].

  [1]: https://docs.npmjs.com/misc/scripts#examples

How do you run a js file using npm scripts?

I&#39;m getting the error shown below while trying to execute &#39;npm install&#39; command. 

&gt; Error: tunneling socket could not be established, cause=connect ECONNREFUSED 10.232.207.137:8080

What do I miss?

![screenshot][1]


  [1]: http://i.stack.imgur.com/uTzvq.png

Error &#39;tunneling socket&#39; while executing npm install

Loooking at the [npm install docs](https://docs.npmjs.com/cli/install) it looks possible to npm install from a github repo.  

Is it also possible to install specifically from a pull request?

Is the solution just to install based on the last commit (last sha) of the pull request? 

npm install from github pull request

I want to install bcrypt on a windows 10 machine with visual studio community 2015, Python v2.7.3 installed but i get the following error. 

node version v4.2.1
node-gyp v3.0.3


    npm install bcrypt 


    C:\Users\ASMIN\Desktop\M2\app&gt;npm install bcrypt
    npm WARN package.json eapp@1.0.0 No description
    npm WARN package.json eapp@1.0.0 No repository field.
    npm WARN package.json eapp@1.0.0 No README data
    
    &gt; bcrypt@0.8.5 install C:\Users\ASMIN\Desktop\M2\app\node_modules\bcrypt
    &gt; node-gyp rebuild


   

     C:\Users\ASMIN\Desktop\M2\app\node_modules\bcrypt&gt;if not defined npm_config_node_gyp (node &quot;C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node
        -gyp.js&quot; rebuild )  else (node  rebuild )
        Building the projects in this solution one at a time. To enable parallel build, please add the &quot;/m&quot; switch.
        C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppBuild.targets(366,5): warning MSB8003: Could not find WindowsSDKDir variable from the registry.  TargetFrameworkVersio
        n or PlatformToolset may be set to an invalid version number. [C:\Users\ASMIN\Desktop\M2\app\node_modules\bcrypt\build\bcrypt_lib.vcxproj]
        TRACKER : error TRK0005: Failed to locate: &quot;CL.exe&quot;. The system cannot find the file specified. [C:\Users\ASMIN\Desktop\M2\app\node_modules\bcrypt\build\bcrypt_lib.vcxproj]
        
        
        gyp ERR! build error
        gyp ERR! stack Error: `C:\Program Files (x86)\MSBuild\14.0\bin\msbuild.exe` failed with exit code: 1
        gyp ERR! stack     at ChildProcess.onExit (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\build.js:270:23)
        gyp ERR! stack     at emitTwo (events.js:87:13)
        gyp ERR! stack     at ChildProcess.emit (events.js:172:7)
        gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:200:12)
        gyp ERR! System Windows_NT 10.0.10240
        gyp ERR! command &quot;C:\\Program Files\\nodejs\\node.exe&quot; &quot;C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js&quot; &quot;rebuild&quot;
        gyp ERR! cwd C:\Users\ASMIN\Desktop\M2\app\node_modules\bcrypt
        gyp ERR! node -v v4.2.1
        gyp ERR! node-gyp -v v3.0.3
        gyp ERR! not ok
        npm ERR! Windows_NT 10.0.10240
        npm ERR! argv &quot;C:\\Program Files\\nodejs\\node.exe&quot; &quot;C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js&quot; &quot;install&quot; &quot;bcrypt&quot;
        npm ERR! node v4.2.1
        npm ERR! npm  v2.14.7
        npm ERR! code ELIFECYCLE
        
        npm ERR! bcrypt@0.8.5 install: `node-gyp rebuild`
        npm ERR! Exit status 1
        npm ERR!
        npm ERR! Failed at the bcrypt@0.8.5 install script &#39;node-gyp rebuild&#39;.
        npm ERR! This is most likely a problem with the bcrypt package,
        npm ERR! not with npm itself.
        npm ERR! Tell the author that this fails on your system:
        npm ERR!     node-gyp rebuild
        npm ERR! You can get their info via:
        npm ERR!     npm owner ls bcrypt
        npm ERR! There is likely additional logging output above.
        
        npm ERR! Please include the following file with any support request:
        npm ERR!     C:\Users\ASMIN\Desktop\M2\app\npm-debug.log


Content Type	Original Author	Original Content on Stackoverflow
Question	Ahmed Farahat	View Question on Stackoverflow
Solution 1 - Javascript	leeor	View Answer on Stackoverflow
Solution 2 - Javascript	Malatesh Patil	View Answer on Stackoverflow
Solution 3 - Javascript	Lamech Desai	View Answer on Stackoverflow

What is "entry point" in npm init

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Solution 2 - Javascript

Solution 3 - Javascript

How to create a DataFrame of random integers with Pandas?

LocalDate to java.util.Date and vice versa simplest conversion?

Attributions