npm run build - Insufficient number of arguments or no entry found - npm

Question

I am trying to build a project for the first time and I am getting an error message.
Insufficient number of arguments or no entry found.
Alternatively, run 'webpack(-cli) --help' for usage info.
Hash: 83fdf40d8aadb2841816
Version: webpack 4.18.0
Time: 180ms
Built at: 09/11/2018 4:55:53 AM
ERROR in Entry module not found: Error: Can't resolve './src' in '/home/baudhi/website'
npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! website#15.19.1 build: `webpack --mode production`
npm ERR! Exit status 2
npm ERR!
npm ERR! Failed at the website#15.19.1 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! /home/baudhi/.npm/_logs/2018-09-11T11_55_53_650Z-debug.log
The ebook I am reading has asked me to type 'npm run build' but it is not working. any help pls.
My package.json file looks like the following:
{
"name": "website",
"version": "15.19.1",
"description": "just practice",
"main": "main.js",
"scripts": {
"develop": "webpack --mode development --watch",
"build": "webpack --mode production"
},
"author": "pebaudhi",
"license": "ISC",
"devDependencies": {
"webpack": "^4.18.0",
"webpack-cli": "^3.1.0"
},
"dependencies": {
"jquery": "^3.3.1"
}
}
And my directory structure is:
/usr/baudhi/website/.babelrc
/usr/baudhi/website/package.json
/usr/baudhi/website/jquery-3.3.1.js
/usr/baudhi/website/src/main.js
/usr/baudhi/website/dist/main.js
node -v
v10.7.0
Thank you very much for helping me.

Answer 1

If you're using Webpack 4 the configuration has been defaulted. Hence, you don't need to provide a webpack.config.json file but you're project needs to follow the default config.
The default entry point in Webpack 4 is ./src/index.js. So either rename ./src/main.js or create webpack.config.js file with the following minimum.
module.exports = {
entry: './src/main.js'
};