Preparing a React component to publish on npm

问题

I have a component that I want to publish in npm, I tested simply by importing it from the components folder in the project.

I managed to publish it, but now I get:

ERROR in ./node_modules/@//index.js Module parse failed: Unexpected token (11:8) You may need an appropriate loader to handle this file type.

My index.js is as follows:

import React from "react"
import Main from "./bootstrap/containers/main"

export default class BootstrapTable extends React.Component {
  constructor(props) {
    super(props)
  }

  render() {
    return (
        <Main {...this.props} changePage={(p) => this.props.changePage(p)}/>
    )
  }
}

Side note: I shouldn't need to change the webpack config as it should work as it is, like many other packages I am currently using.

回答1:

I solved it, thanks to @zerkms for the first step needed for my research.

Steps:

1. Installed webpack and added the following config to webpack.config.js (my index.js is in ./src and externals are very important so you don't load instances of react):

var path = require('path');

module.exports = {
  mode: 'production',
  entry: './src/index.js',
  output: {
    path: path.resolve('dist'),
    filename: 'index.js',
    libraryTarget: 'commonjs2'
  },
  module: {
    rules: [{
      test: /\.js?$/,
      exclude: /(node_modules)/,
      use: {
        loader: 'babel-loader'
      }
    }]
  },
  externals: {
    'react': 'react',
    'react-dom': 'react-dom',
    'react-bootstrap': 'react-bootstrap'
  }
}

2. Created a .babelrc in the main folder with the following:

{
    "presets": [
        "react",
        "env",
        "stage-0"
    ]
}

3. Created an .npmignore file with:

src
.babelrc
webpack.config.js

4. Created a package.json file with the following (your packages might be different but basically just install what you need "npm i package-name"):

{
  "name": "@scope/package-name",
  "version": "1.0.0",
  "description": "My component",
  "main": "dist/index.js",
  "scripts": {
    "build": "webpack"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/myrepo.git"
  },
  "keywords": [
    "react",
    "bootstrap"
  ],
  "author": "Me",
  "license": "MIT",
  "peerDependencies": {
    "react": "^16.4.0",
    "react-bootstrap": "^0.32.1",
    "react-dom": "^16.4.0"
  },
  "devDependencies": {
    "react": "^16.4.0",
    "react-bootstrap": "^0.32.1",
    "react-dom": "^16.4.0",
    "babel-core": "^6.21.0",
    "babel-loader": "^7.1.4",
    "babel-preset-env": "^1.6.1",
    "babel-preset-react": "^6.16.0",
    "babel-preset-stage-0": "^6.24.1",
    "path": "^0.12.7",
    "webpack": "^4.5.0",
    "webpack-cli": "^2.0.14"
  }
}

5. npm install
6. npm run build
7. npm version 1.0.0 (increment for updates)
8. npm publish

done!

These articles were great help:

• React + npm - How to Publish a React Component to npm
• How to create a React component and publish it on NPM
• A guide to building a React component with webpack 4, publishing to npm, and deploying the demo to GitHub Pages

来源：https://stackoverflow.com/questions/50710968/preparing-a-react-component-to-publish-on-npm