How to remove ESlint error no-unresolved from importing ‘react’

no-unresolved https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-unresolved.md

After installing eslint-import-resolver-webpack

My .eslintrc config

{
  "extends": "airbnb",
  "rules": {
    "comma-dangle": ["error", "never"],
    "semi": ["error", "always"],
    "react/jsx-filename-extension": 0,
    "react/prop-types": 0,
    "react/no-find-dom-node": 0,
    "jsx-a11y/label-has-for": 0
  },
  "globals": {
    "document": true,
    "window": true
  },
  "env": {
    "jest": true
  },
  "settings": {
    "import/resolver": "webpack"
  }
}

---

My package.json

{
  "name": "coinhover",
  "version": "0.0.1",
  "main": "index.js",
  "author": "Leon Gaban",
  "license": "MIT",
  "scripts": {
    "start": "webpack-dev-server",
    "dev": "webpack-dev-server",
    "production": "webpack -p",
    "build": "webpack -p",
    "test": "eslint app && jest",
    "test:fix": "eslint --fix app"
  },
  "now": {
    "name": "coinhover",
    "engines": {
      "node": "7.4.x"
    },
    "alias": "coinhover.io"
  },
  "jest": {
    "moduleNameMapper": {},
    "moduleFileExtensions": [
      "js",
      "jsx"
    ],
    "moduleDirectories": [
      "node_modules"
    ]
  },
  "dependencies": {
    "axios": "^0.16.1",
    "babel-runtime": "6.11.6",
    "jsonwebtoken": "^7.4.1",
    "prop-types": "^15.5.10",
    "ramda": "^0.24.1",
    "react": "^15.5.4",
    "react-dom": "^15.5.4",
    "react-hot-loader": "next",
    "react-redux": "^5.0.5",
    "react-router": "^4.1.1",
    "react-router-dom": "^4.1.1",
    "redux": "^3.6.0",
    "redux-thunk": "^2.2.0"
  },
  "devDependencies": {
    "babel-core": "^6.24.1",
    "babel-loader": "^7.0.0",
    "babel-plugin-transform-es2015-modules-commonjs": "^6.24.1",
    "babel-plugin-transform-runtime": "^6.23.0",
    "babel-polyfill": "^6.23.0",
    "babel-preset-env": "^1.5.1",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-react": "^6.24.1",
    "babel-preset-react-hmre": "^1.1.1",
    "babel-preset-stage-0": "^6.24.1",
    "copy-webpack-plugin": "^4.0.1",
    "css-loader": "^0.28.4",
    "enzyme": "^2.8.2",
    "enzyme-to-json": "^1.5.1",
    "eslint": "^4.3.0",
    "eslint-config-airbnb": "^15.1.0",
    "eslint-import-resolver-webpack": "^0.8.3",
    "eslint-plugin-import": "^2.7.0",
    "eslint-plugin-jsx-a11y": "^5.1.1",
    "eslint-plugin-react": "^7.1.0",
    "extract-text-webpack-plugin": "^2.1.0",
    "html-webpack-plugin": "^2.28.0",
    "jest": "^20.0.4",
    "node-sass": "^4.5.3",
    "react-addons-test-utils": "15.0.0-rc.2",
    "react-test-renderer": "^15.5.4",
    "sass-loader": "^6.0.5",
    "style-loader": "^0.18.1",
    "webpack": "^2.6.1",
    "webpack-dev-server": "^2.4.5"
  }
}

Webpack

import fs from 'fs'
import webpack from 'webpack'
import HtmlWebpackPlugin from 'html-webpack-plugin'
import ExtractTextPlugin from 'extract-text-webpack-plugin'
import CopyWebpackPlugin from 'copy-webpack-plugin'
import path from 'path'
import chalk from 'chalk'

const coinhover = path.resolve(__dirname, "coinhover")
const src = path.resolve(__dirname, "public/src")
const log = console.log
// https://gist.github.com/leongaban/dc92204454b3513e511645af98107775

const HtmlWebpackPluginConfig = new HtmlWebpackPlugin({
  template: __dirname + '/public/src/index.html',
  filename: 'index.html',
  inject: 'body'
})

const ExtractTextPluginConfig = new ExtractTextPlugin({
  filename: "coinhover.css",
  disable: false,
  allChunks: true
})

const CopyWebpackPluginConfig = new CopyWebpackPlugin([{ from: "public/src/static", to: "static" }])

const PATHS = {
  app: src,
  build: coinhover,
}

const LAUNCH_COMMAND = process.env.npm_lifecycle_event

const isProduction = LAUNCH_COMMAND === 'production'
process.env.BABEL_ENV = LAUNCH_COMMAND

const productionPlugin = new webpack.DefinePlugin({
  'process.env': {
    NODE_ENV: JSON.stringify('production')
  }
})

const base = {
  entry: [
    PATHS.app
  ],
  output: {
    path: PATHS.build,
    filename: 'index_bundle.js'
  },
  module: {
    rules: [
      {
        test: /.jsx?$/,
        exclude: /node_modules/,
        use: ["babel-loader"]
      },
      {
        test: /.scss$/,
        use: ExtractTextPlugin.extract({
          fallback: "style-loader",
          use: ["css-loader", "sass-loader"],
          publicPath: coinhover
        })
      }
    ],
    loaders: [
      { test: /.js$/, exclude: /node_modules/, loader: 'babel-loader' },
      { test: /.css$/, loader: 'style-loader!css-loader' }
    ]
  },
  resolve: {
    modules: ['node_modules', path.resolve(__dirname, 'public/src')]
  }
}

const developmentConfig = {
  devServer: {
    publicPath: "",
    contentBase: path.join(__dirname, "dist"),
    // hot: false,
    quiet: true,
    inline: true,
    compress: true,
    stats: "errors-only",
    open: true
  },
  devtool: 'cheap-module-inline-source-map',
  plugins: [
    CopyWebpackPluginConfig,
    ExtractTextPluginConfig,
    HtmlWebpackPluginConfig,
    // new webpack.HotModuleReplacementPlugin()
  ]
}

const productionConfig = {
  devtool: 'cheap-module-source-map',
  plugins: [
    CopyWebpackPluginConfig,
    ExtractTextPluginConfig,
    HtmlWebpackPluginConfig,
    productionPlugin
  ]
}

log(`${chalk.magenta('🤖 ')} ${chalk.italic.green('npm run:')} ${chalk.red(LAUNCH_COMMAND)}`)

export default Object.assign({}, base,
  isProduction === true ? productionConfig : developmentConfig
)

Answer

You can add an option to ignore case:

"rules": {
   "import/no-unresolved": [
      2, 
      { "caseSensitive": false }
   ]
}

This thread at github also describes how the linter was checking case for parts of the path which come before the folder containing package.json. If you for example have the path: C:/Workspace/app and you navigate to it using cd C:/workspace/app (lowercase workspace), the linter would also give an error on the imports. Looks like it should now be fixed, but perhaps you are still using an older version.