Develop Reference

Can't start webpack development server

I am new on es6. I followed a blog Beginner’s Guide To Setup ES6 Development Environment. I completed all of the process step-by-step. Then the step comes up to install the webpack development server. Then I write this code to cmd - npm run build. I get this error:
λ npm run build
-> jj#1.0.0 build C:\Users\galib\Desktop\jj
-> webpack-dev-server
The CLI moved into a separate package: webpack-cli
Please install 'webpack-cli' in addition to webpack itself to use the CLI
-> When using npm: npm i -D webpack-cli
-> When using yarn: yarn add -D webpack-cli
internal/modules/cjs/loader.js:888
throw err;
^
Error: Cannot find module 'webpack-cli/bin/config-yargs'
Require stack:
- C:\Users\galib\AppData\Roaming\npm\node_modules\webpack-dev-server\bin\webpack-dev-server.js
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:885:15)
at Function.Module._load (internal/modules/cjs/loader.js:730:27)
at Module.require (internal/modules/cjs/loader.js:957:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.<anonymous> (C:\Users\galib\AppData\Roaming\npm\node_modules\webpack-dev-server\bin\web
at Module._compile (internal/modules/cjs/loader.js:1068:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)
at Module.load (internal/modules/cjs/loader.js:933:32)
at Function.Module._load (internal/modules/cjs/loader.js:774:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12) {
code: 'MODULE_NOT_FOUND',
requireStack: [
'C:\\Users\\galib\\AppData\\Roaming\\npm\\node_modules\\webpack-dev-server\\bin\\webpack-dev-serv
]
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! jj#1.0.0 build: `webpack-dev-server`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the jj#1.0.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\galib\AppData\Roaming\npm-cache\_logs\2021-06-08T18_22_59_337Z-debug.log

The article you read was probably written before Webpack's cli was moved to webpack-cli, so you might need one small extra step.
Please install 'webpack-cli' in addition to webpack itself to use the CLI
-> When using npm: npm i -D webpack-cli
-> When using yarn: yarn add -D webpack-cli
Run npm i -D webpack-cli and then you can use the Webpack CLI.

Microsoft BotBuilder javascript sample error

I am trying to test the Microsoft BotBUilder samples with the Bot Framework Emulator.
I have cloned the BotBuilder repo and gone through the readme instructions npm install but when I run npm start I get this error
/home/ronald/Desktop/botbuilder-samples/samples/javascript_nodejs/02.echo-bot/node_modules/csv-parse/lib/index.js:20
super({...{readableObjectMode: true}, ...opts})
^^^
SyntaxError: Unexpected token ...
at createScript (vm.js:53:10)
at Object.runInThisContext (vm.js:95:10)
at Module._compile (module.js:543:28)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:488:32)
at tryModuleLoad (module.js:447:12)
at Function.Module._load (module.js:439:3)
at Module.require (module.js:498:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (/home/ronald/Desktop/botbuilder-samples/samples/javascript_nodejs/02.echo-bot/node_modules/csv/lib/index.js:6:10)
npm ERR! Linux 4.15.0-72-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "start"
npm ERR! node v7.10.1
npm ERR! npm v4.2.0
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! echobot#1.0.0 start: `node ./index.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the echobot#1.0.0 start script 'node ./index.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the echobot package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node ./index.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs echobot
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls echobot
npm ERR! There is likely additional logging output above.

Your running it on Nodejs version 7+ and BotBuilder require 10.14+.
So your node is not able to understand deconstructing operator ....
Try to upgrade your node and it'll works fine.

Can you please try:
super({readableObjectMode: true, ...opts})
I don't think you need to spread the first object.

Error with install angular-cli with node-sass

My system configuration:
debian 4.4 ,
nvm 0.33.8 ,
node v8.9.4 ,
npm 5.6.0 .
I want to install Angular-cli npm install -g #angular/cli.
But I get an error message:
root#contracts:/home/kalugin# npm install -g #angular/cli
/root/.nvm/versions/node/v8.9.4/bin/ng -> /root/.nvm/versions/node/v8.9.4/lib/node_modules/#angular/cli/bin/ng
> node-sass#4.7.2 install /root/.nvm/versions/node/v8.9.4/lib/node_modules/#angular/cli/node_modules/node-sass
> node scripts/install.js
module.js:471
throw err;
^
Error: Cannot find module '/root/.nvm/versions/node/v8.9.4/lib/node_modules/#angular/cli/node_modules/node-sass/scripts/install.js'
at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:394:7)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:509:3
> uglifyjs-webpack-plugin#0.4.6 postinstall /root/.nvm/versions/node/v8.9.4/lib/node_modules/#angular/cli/node_modules/webpack/node_modules/uglifyjs-webpack-plugin
> node lib/post_install.js
module.js:471
throw err;
^
Error: Cannot find module '/root/.nvm/versions/node/v8.9.4/lib/node_modules/#angular/cli/node_modules/webpack/node_modules/uglifyjs-webpack-plugin/lib/post_install.js'
at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:394:7)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:509:3
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents#1.1.3 (node_modules/#angular/cli/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents#1.1.3: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: node-sass#4.7.2 (node_modules/#angular/cli/node_modules/node-sass):
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: node-sass#4.7.2 install: `node scripts/install.js`
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! uglifyjs-webpack-plugin#0.4.6 postinstall: `node lib/post_install.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the uglifyjs-webpack-plugin#0.4.6 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2018-02-09T17_27_50_397Z-debug.log
I tried npm cache clean, doesn't help.
I tried change node version nvm use v6.12.3, doesn't help.
debug.log pointed to the problem with node-sass package.
I tried install node-sass globally - but the same error. I cannot install node-sass...
Any ideas?

Likely the problem is because you're running as root, and NPM disables scripts automatically when you do that. Try passing the --unsafe-perm to the NPM install command

Try npm rebuild node-sass it can be a handy one

Actually the problem is due to use of sudo in command as it is disabling the scripts. Try npm install -g angular-cli without sudo it will work

Node.js with parse.com (ParseOpenSource javascript sdk) installed - fails on AWS eb deploy

I am trying to 'eb deploy' a node.js with javascript sdk addition.
It works fine locally but every time I have tried to - eb deploy- it I get this in the logs
npm ERR! npm bugs node-express
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!
npm ERR! npm owner ls node-express
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! /var/app/current/npm-debug.log
> node-express#0.0.0 start /var/app/current
> node main.js
{ [Error: ENOENT: no such file or directory, open '.env'] errno: -2, code: 'ENOENT', syscall: 'open', path: '.env' }
module.js:327
throw err;
^
Error: Cannot find module 'parse/node'
at Function.Module._resolveFilename (module.js:325:15)
at Function.Module._load (module.js:276:25)
at Module.require (module.js:353:17)
at require (internal/module.js:12:17)
at Object.<anonymous> (/var/app/current/api/common/parse.js:3:13)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Module.require (module.js:353:17)
...npm ERR! code ELIFECYCLE
npm ERR! node-express#0.0.0 start: `node main.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the node-express#0.0.0 start script 'node main.js'.
npm ERR! This is most likely a problem with the node-express package,
I have repeatedly tried
npm install express --save
and yes I have also run npm install parse (it all works fine locally).
To no avail. Why would it all work like a charm locally but not on AWS EB ?
-Thanks for any clues.

Not sure if this will help someone. Ultimately I solved this by
'npm install moduleName --save' on all of my modules. One by one.
Still not sure why the site worked locally ?
-best of luck.

netcdf doesn't work in Node.js program

I'm trying to encode a NetCDF file in Node.js program, by using the netcdf(https://www.npmjs.com/package/netcdf) library.
Now, once I run a program, I get an error below.
C:\app [master +2 ~1 -0 !]> npm start
> spaceapps#1.0.0 start C:\app
> node server.js
C:\app\node_modules\text-encoding\lib\encoding.js:979
throw TypeError('Called as a function. Did you forget \'new\'?');
^
TypeError: Called as a function. Did you forget 'new'?
at TypeError (native)
at Object.TextDecoder (C:\app\node_modules\text-encoding\lib\encoding.js:979:13)
at Object.<anonymous> (C:\app\node_modules\netcdf\util\readbinary.js:4:40)
at Module._compile (module.js:413:34)
at Object.Module._extensions..js (module.js:422:10)
at Module.load (module.js:357:32)
at Function.Module._load (module.js:314:12)
at Module.require (module.js:367:17)
at require (internal/module.js:16:19)
at Object.<anonymous> (C:\app\node_modules\netcdf\util\type.js:4:14)
npm ERR! Windows_NT 6.3.9600
npm ERR! argv "C:\\Program Files (x86)\\Nodist\\v\\nodev5.9.1\\node.exe" "C:\\Program Files (x86)\\Nodist\\bin\\node_modules\\npm\\bin\\npm-cli.js" "start"
npm ERR! node v5.9.1
npm ERR! npm v3.8.7
npm ERR! code ELIFECYCLE
npm ERR! spaceapps#1.0.0 start: `node server.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the spaceapps#1.0.0 start script 'node server.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the spaceapps package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node server.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs spaceapps
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls spaceapps
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! C:\app\npm-debug.log
C:\app [master +3 ~1 -0 !]>
It seems there is an error in a library.
I appreciate if someone tells me a solution for it.

As the developer said, He has no plans in the short or medium term to continue development, so you could consider use netcdfjs, that it's a javascript library that allows to read NetCDF v3 files. Because it's a NodeJS package you can run it server side, and for regular size files you can read it online, here you have an example.