Modifying Vue files "HTML" but not working on my localhost - vue.js

Question

I'm running a Laravel project, and I have some vue files which I need to change (for example, erasing some stuff), but the thing is I erase them from the vue file, but they are still appearing on the website. If I modify anything else, like a welcome.blade or whatsoever, it does work, but not with this vue files.
Only time I got it to work was stopping the project, running npm run dev, npm run watch --poll and starting the server again with php artisan serve, but when I tried doing it again, it didn't work.
I don't know if I am missing something obvious here. Please help my out :) and also, if I'm missing some information here please tell me so I can post it so someone can help me. Thanks!
This is my package.json that is on my root folder.
{
"private": true,
"scripts": {
"dev": "npm run development",
"development": "cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
"watch": "npm run development -- --watch",
"watch-poll": "npm run watch -- --watch-poll",
"hot": "cross-env NODE_ENV=development node_modules/webpack-dev-server/bin/webpack-dev-server.js --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
"prod": "npm run production",
"production": "cross-env NODE_ENV=production node_modules/webpack/bin/webpack.js --no-progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
},
"devDependencies": {
"axios": "^0.19",
"bootstrap": "^4.1.0",
"cross-env": "^5.1",
"jquery": "^3.2",
"laravel-mix": "^4.0.7",
"lodash": "^4.17.13",
"popper.js": "^1.12",
"resolve-url-loader": "^2.3.1",
"sass": "^1.15.2",
"sass-loader": "^7.1.0",
"vue": "^2.5.17",
"vue-template-compiler": "^2.6.11"
}
}

Answer 1

Well your file need to be compile so you need to run when editing npm run watch and you'll see live changement on reload and possibly some error discarding on the terminal you are running it from.
This is explicitly specify in the "tips" of Laravel documentation about Vue.