javascript - 找不到模块 : Error: Can't resolve '@cycle/run' webpack 2. 2.1

Question

我正在尝试在 cycle.js 中运行一个 hello world 应用程序使用 webpack 2.2.1

我收到此错误:

ERROR in ./app/index.js Module not found: Error: Can't resolve '@cycle/run' in '/Users/Ben/proj/sb_vol_calc/frontend/app' @ ./app/index.js 7:11-32 @ multi webpack-dev-server/client?http://localhost:3000 ./app/index

这是我的 webpack.config.js:

   var path = require('path')
var webpack = require('webpack')

module.exports = {
  devtool: 'eval',
  entry: [
    'webpack-dev-server/client?http://localhost:3000',
    './app/index'
  ],
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bundle.js'
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        use: {
          loader: 'babel-loader'
        }
      }
    ]
  },
  resolve: {
    extensions: ['.js'],
    modules: [
      path.join(__dirname, 'src'),
      "node_modules"
    ]
  }
}

package.json:

{
  "name": "xxx",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "scripts": {
    "start": "node server.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "babel": {
    "presets": [
      "es2015",
      "react",
      "stage-0"
    ]
  },
  "devDependencies": {
    "babel-core": "^6.23.1",
    "babel-loader": "^6.3.2",
    "babel-preset-es2015": "^6.22.0",
    "babel-preset-react": "^6.23.0",
    "babel-preset-stage-0": "^6.22.0",
    "webpack": "^2.2.1",
    "webpack-dev-server": "^2.4.1"
  },
  "dependencies": {
    "@cycle/dom": "^14.3.0",
    "@cycle/xstream-run": "^4.2.0",
    "xstream": "^10.2.0"
  }
}

我已经运行了 npm install。现在应该可以工作了吗？或者我错过了什么？

index.js:

import xs from 'xstream';
import {run} from '@cycle/run';
import {makeDOMDriver, h1} from '@cycle/dom';

function main() {
  const sinks = {
    DOM: xs.periodic(1000).map(i =>
      h1('' + i + ' seconds elapsed')
    )
  };
  return sinks;
}

const drivers = {
  DOM: makeDOMDriver('#root')
};

run(main, drivers);

Answer 1

您没有安装 @cycle/run 作为依赖项，而是安装了 @cycle/xstream-run。所以你必须从中导入run:

import {run} from '@cycle/xstream-run';

根据latest release @cycle/xstream-run 已重命名为 @cycle/run，因此您可能应该开始使用它。您所需要做的就是安装它:

npm install --save @cycle/run