在webpack捆绑包中找不到模块，但是在捆绑包中

Question

我目前正在为NodeJS项目使用webpack，但遇到一个奇怪的问题，我无法弄清。

运行节点捆绑包时，出现此错误：

internal/modules/cjs/loader.js:596
    throw err;
    ^

Error: Cannot find module 'json-stringify-safe'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:594:15)
    at Function.Module._load (internal/modules/cjs/loader.js:520:25)
    at Module.require (internal/modules/cjs/loader.js:650:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/private/tmp/dist/node_modules/newrelic/lib/util/logger.js:3:17)
    at Module._compile (internal/modules/cjs/loader.js:702:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:713:10)
    at Module.load (internal/modules/cjs/loader.js:612:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
    at Function.Module._load (internal/modules/cjs/loader.js:543:3)

是的，该模块丢失了。有趣的是，在捆绑包中，模块在那里：

/***/ "./node_modules/json-stringify-safe/stringify.js":
/*!*******************************************************!*\
  !*** ./node_modules/json-stringify-safe/stringify.js ***!
  \*******************************************************/
/*! no static exports found */
/***/ (function(module, exports) {

exports = module.exports = stringify
exports.getSerialize = serializer

function stringify(obj, replacer, spaces, cycleReplacer) {
  return JSON.stringify(obj, serializer(replacer, cycleReplacer), spaces)
}

function serializer(replacer, cycleReplacer) {
  var stack = [], keys = []

  if (cycleReplacer == null) cycleReplacer = function(key, value) {
    if (stack[0] === value) return "[Circular ~]"
    return "[Circular ~." + keys.slice(0, stack.indexOf(value)).join(".") + "]"
  }

  return function(key, value) {
    if (stack.length > 0) {
      var thisPos = stack.indexOf(this)
      ~thisPos ? stack.splice(thisPos + 1) : stack.push(this)
      ~thisPos ? keys.splice(thisPos, Infinity, key) : keys.push(key)
      if (~stack.indexOf(value)) value = cycleReplacer.call(this, key, value)
    }
    else stack.push(value)

    return replacer == null ? value : replacer.call(this, key, value)
  }
}


/***/ }),

如果我有webpack手动将模块复制到（复制到node_modules中），此错误消失，然后是另一个模块...然后是另一个...等等...

有人知道为什么找不到捆绑包中的模块吗？

这是我的基本Webpack配置：

import CleanWebpackPlugin from 'clean-webpack-plugin';
import path from 'path';
import webpack from 'webpack';
import { removeEmpty } from 'webpack-config-utils';

const distDir = path.resolve(__dirname, 'dist');
const contextDir = path.resolve(__dirname);

export const copyThings = [
  { from: 'start.sh', to: 'start.sh' },
  { from: 'ecosystem.config.js', to: 'ecosystem.config.js' },
  { from: 'newrelic_prod.js', to: 'newrelic.js' },
  { from: 'node_modules/newrelic', to: 'node_modules/newrelic' },
  {
    from: 'node_modules/apollo-engine-binary-darwin',
    to: 'node_modules/apollo-engine-binary-darwin'
  },
  {
    from: 'node_modules/apollo-engine-binary-linux',
    to: 'node_modules/apollo-engine-binary-linux'
  }
];

const common: webpack.Configuration = {
  context: contextDir,
  entry: './src/server.ts',
  output: { filename: 'tank.js', path: distDir },
  module: {
    rules: [
      { test: /\.tsx?$/, use: 'ts-loader', exclude: /node_modules/ },
      { test: /\.mjs$/, include: /node_modules/, type: 'javascript/auto' }
    ]
  },
  resolve: { extensions: ['.ts', '.js', '.mjs'] },
  target: 'node',
  externals: [
    function(context, request, callback) {
      if (request.indexOf('apollo-engine-binary') > -1) {
        return callback(undefined, 'commonjs ' + request);
      }
      callback(undefined, undefined);
    },
    function(context, request, callback) {
      if (request.indexOf('newrelic') > -1) {
        return callback(undefined, 'commonjs ' + request);
      }
      callback(undefined, undefined);
    }
  ],
  plugins: removeEmpty([
    new CleanWebpackPlugin([distDir], {
      root: contextDir
    }),
    new webpack.IgnorePlugin(/vertx/),
    new webpack.IgnorePlugin(/bufferutil/),
    new webpack.IgnorePlugin(/utf-8-validate/)
  ])
};

export default common;

以及我的环境特定配置：

import CopyWebpackPlugin from 'copy-webpack-plugin';
import merge from 'webpack-merge';

import common, { copyThings } from './webpack.common';

const config = merge(common, {
  devtool: 'inline-source-map',
  mode: 'development',
  plugins: [new CopyWebpackPlugin(copyThings)]
});

export default config;