I have given up at trying to learn rails. I'm now focusing my energy on trying to get started with node, using the MERN stack. I have done both Stephen Grider and Andrew Mead's udemy course as well as all of the code school js courses. I'm afraid I'm not off to a promising start.
I'm stuck at getting my import statements to work. So far, I have tried to import files. For that I need babel. My package.json has:
"scripts": {
"test": "mocha test/**/*-test.js --compilers js:babel-core/register --recursive",
"start": "nodemon -w server.js server.js --source-maps"
},
"author": "Ol",
"license": "MIT",
"dependencies": {
"axios": "^0.16.1",
"babel-cli": "^6.24.1",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"babel-polyfill": "^6.13.0",
"body-parser": "^1.17.1",
"caniuse-api": "^2.0.0",
"express": "^4.13.4",
"lodash": "^4.17.4",
"material-ui": "^0.18.0",
"nodemon": "^1.11.0",
"react": "^15.5.4",
"react-dom": "^15.5.4",
"react-promise": "^1.1.2",
"react-redux": "^5.0.4",
"react-router": "^4.1.1",
"react-tap-event-plugin": "^2.0.1",
"redux": "^3.6.0",
"redux-devtools": "^3.4.0",
"redux-form": "^6.7.0",
"redux-thunk": "^2.2.0",
"socket.io": "^2.0.1",
"source-map-support": "^0.4.15"
},
"devDependencies": {
"babel": "^6.23.0",
"babel-core": "^6.24.1",
"babel-loader": "^7.0.0",
"babelify": "^7.3.0",
"enzyme": "^2.8.2",
"mocha": "^3.3.0",
"react-addons-test-utils": "^15.5.1",
"webpack": "^2.5.1"
}
}
My .babelrc has:
{
"presets": ["react", "es2015"]
}
My server.js has:
import express from 'express';
import bodyParser from 'body-parser';
import { MongoClient } from 'mongodb';
import 'babel-polyfill';
import SourceMapSupport from 'source-map-support';
SourceMapSupport.install(); //to get line numbers with file refs rather than compiled code line numbers
// const app = express();
app.use(express.static('open'));
app.use(bodyParser.json());
app.listen(3000, function(){
console.log('listening on 3000');
});
My webpack.config.js has:
module :{
rules:[{
// use : 'babel-loader',
loader: 'babel-loader',
query :{
presets:['react','es2015']
// ,'es2017'
},
test: /\.jsx?$/,
exclude: /(node_modules|bower_components)/
}]
When I try to use npm start, I get an error with my import statements. It says:
{ import express from 'express';
^^^^^^
SyntaxError: Unexpected token import
at createScript (vm.js:56:10)
at Object.runInThisContext (vm.js:97:10)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:390:7)
at startup (bootstrap_node.js:150:9)
[nodemon] app crashed - waiting for file changes before starting...
Can anyone give me a clue on how to get babel setup to work with a node app. I noticed that even when I run npm install in my console, I don't get a node_modules folder in my app. I used yarn to add dependencies to package.json, but don't seem to have the ability to generate an node_modules folder.
Next attempt
I then tried npm init and then npm upgrade (even though I use yarn for adding modules).
The output of npm upgrade is below, but I still don't end up with a node modules folder. I think the reason babel isn't working to recognise my import statements is because I don't have the module in my app. Does anyone know how to get a node modules file to be created in the setup? I thought that happened automatically.
npm update
npm WARN deprecated isarray@2.0.1: Just use Array.isArray directly
> uws@0.14.5 install /Users/mlc/may/node_modules/uws
> node-gyp rebuild > build_log.txt 2>&1 || exit 0
- ms@0.7.3 node_modules/engine.io-client/node_modules/ms
- debug@2.6.4 node_modules/engine.io-client/node_modules/debug
- ms@0.7.3 node_modules/finalhandler/node_modules/ms
- react-addons-create-fragment@15.5.4 node_modules/react-addons-create-fragment
- react-addons-transition-group@15.5.2 node_modules/react-addons-transition-group
- ms@0.7.3 node_modules/socket.io-client/node_modules/ms
- debug@2.6.4 node_modules/socket.io-client/node_modules/debug
- camelcase@1.2.1 node_modules/uglify-js/node_modules/camelcase
- cliui@2.1.0 node_modules/uglify-js/node_modules/cliui
cr@1.0.0 /Users/mlc/may
├── axios@0.16.2
├── body-parser@1.17.2
├── express@4.15.3
├── material-ui@0.18.2
├── mocha@3.4.2
├── react-promise@1.1.3
├── react-redux@5.0.5
├── socket.io@2.0.2
└── webpack@2.6.1
