Module build failed: Error: Couldn't find preset "es2015" relative to directory "/app"

I see so many people ask very similar question but no answer helps me.

So: when I run "npm install" command I am getting the very error.

What I find most unnerving is that my package.json looks like this:

{ 
      "scripts": {
        "lint": "eslint src",
        "postinstall": "webpack",
        "start": "node app.js"
      },
      "engines": {
        "node": ">=6.0.0"
      },
      "devDependencies": {
        "babel-core": "^6.24.0",
        "babel-loader": "^6.4.1",
        "babel-preset-es2015": "^6.24.0",
        "babel-preset-react": "^6.23.0",
        "babel-preset-stage-0": "^6.22.0",
        "css-loader": "0.23.1",
        "eslint": "2.7.0",
        "eslint-plugin-react": "5.2.2",
        "node-sass": "3.8.0",
        "sass-loader": "4.0.0",
        "sockjs-client": "^1.1.1",
        "style-loader": "0.13.1"
      },
      "dependencies": {
        "axios": "^0.15.3",
        "babel-cli": "^6.23.0",
        "body-parser": "^1.17.1",
        "express": "^4.15.2",
        "file-loader": "^0.10.1",
        "mongodb": "^2.2.24",
        "react": "^15.4.1",
        "react-addons-css-transition-group": "^15.4.2",
        "react-addons-transition-group": "^15.4.2",
        "react-dom": "^15.2.1",
        "react-select": "^1.0.0-rc.3",
        "reactstrap": "^4.2.0",
        "webpack": "^1.14.0"
      }
    }

So the dependency for es2015 is already there. What can I be doing wrong?

~ $ cat .babelrc
{
  "presets": ["es2015", "stage-0", "react"]
}

~ $ npm ls babel-preset-es2015
xxx-landing-pae@1.0.0 /app
`-- (empty)

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