I get the following error when running npm build

Theophilus

{
    "name": "confusion",
    "version": "1.0.0",
    "main": "index.js",
    "dependencies": {
        "bootstrap-social": "^5.1.1",
        "font-awesome": "^4.7.0",
        "jquery": "^3.3.1",
        "lite-server": "^2.4.0",
        "popper.js": "^1.12.9"
    },
    "devDependencies": {
        "cssmin": "^0.4.3",
        "htmlmin": "0.0.7",
        "node-sass": "^4.7.2",
        "onchange": "^3.3.0",
        "parallelshell": "^3.0.2",
        "rimraf": "^2.6.2",
        "uglifyjs": "^2.4.11",
        "usemin-cli": "^0.5.1"
    },
    "scripts": {
        "start": "npm run watch:all",
        "test": "echo \"Error: no test specified\" && exit 1",
        "lite": "lite-server",
        "scss": "node-sass -o css/ css/",
        "watch:scss": "onchange \"css/*.scss\" -- npm run scss",
        "watch:all": "parallelshell \"npm run watch:scss\" \"npm run lite\"",
        "clean": "rimraf dist",
        "copyfonts": "copyfiles -f node_modules/font-awesome/fonts/* dist/fonts",
        "imagemin": "imagemin img/* -o dist/img",
        "usemin": "usemin contactus.html -d dist --htmlmin -o dist/contactus.html && usemin aboutus.html -d dist --htmlmin -o dist/aboutus.html && usemin index.html -d dist --htmlmin -o dist/index.html",
        "build": "npm run clean && npm run imagemin && npm run copyfonts && npm run usemin"
    }
}

C:\Users\username\Documents\coursera\Bootstrap4\conFusion>npm run build

> [email protected] build C:\Users\username\Documents\coursera\Bootstrap4\conFusion
> npm run clean && npm run imagemin && npm run copyfonts && npm run usemin

> [email protected] clean C:\Users\username\Documents\coursera\Bootstrap4\conFusion
> rimraf dist

> [email protected] imagemin C:\Users\username\Documents\coursera\Bootstrap4\conFusion
> imagemin img/* -o dist/img

4 images minified

> [email protected] copyfonts C:\Users\username\Documents\coursera\Bootstrap4\conFusion
> copyfiles -f node_modules/font-awesome/fonts/* dist/fonts

> [email protected] usemin C:\Users\username\Documents\coursera\Bootstrap4\conFusion
> usemin contactus.html -d dist --htmlmin -o dist/contactus.html && usemin aboutus.html -d dist --htmlmin -o dist/aboutus.html && usemin index.html -d dist --htmlmin -o dist/index.html

undefined:1625
    throw new JS_Parse_Error(message, filename, line, col, pos);
    ^
SyntaxError: Unexpected token: punc ({)
    at JS_Parse_Error.get (eval at <anonymous> (C:\Users\username\Documents\coursera\Bootstrap4\conFusion\node_modules\usemin\node_modules\uglify-js\tools\node.js:27:1), <anonymous>:86:23)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] usemin: `usemin contactus.html -d dist --htmlmin -o dist/contactus.html && usemin aboutus.html -d dist --htmlmin -o dist/aboutus.html && usemin index.html -d dist --htmlmin -o dist/index.html`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] usemin 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\username\AppData\Roaming\npm-cache\_logs\2018-09-24T21_38_01_183Z-debug.log
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] build: `npm run clean && npm run imagemin && npm run copyfonts && npm run usemin`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

Timija F

I am doing the same course and had the same errors. However, I was just able to fix it. I did this by reinstalling all dev dependencies and used the current versions, not the ones in the course. I did also change the usemin command (according to the post here) to

"imagemin": "imagemin img/* --out-dir=dist/img",

However, it still did not work, so I checked all my files for errors using the following tools:

https://www.freeformatter.com/java-regex-tester.html for testing the html files; http://www.webtoolkitonline.com/javascript-tester.html, for testing the .js file and https://jsonlint.com/?json=, to test the package.json file for errors.

After I did correct all the files, the command "npm run build" did finally work. (I especially forgot to check the script.js file where I just copied the code from the html file that still contained the script tags)

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