fs.exists is not a function in node env

I am trying to use this package in node, not browser environment.

When I ran the code below, I got this error: TypeError: fs.exists is not a function (https://github.com/exceljs/exceljs/blob/76a205ced964e0a9c3f14addadb8156a442e45a5/lib/utils/utils.js#L129)

import * as Excel from "exceljs/dist/exceljs.js";

const filepath = 'C:\\Documents\\projects\\tmpls\\abcdedf.xlsx';
const workbook = new Excel.Workbook();
await workbook.xlsx.readFile(filepath).then(()=>{console.log(23456)}).catch((e)=>{console.log('[catch]', e)});

My webpack.config:

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

module.exports = {
  entry: {
    index: './src/core/index.js'
  },
  output: {
    path: path.join(__dirname, './dist'),
    filename: '[name].js'
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  target: 'node',
  module: {
    loaders: [
      {
        test: /\.js|jsx$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      }
    ]
  }
}

Is there anything wrong with the way I use the package or my webpack.config?

[shaosh]

Finally figured it out

webpack.config.js: need to set node_modules as externals

var path = require('path');
var webpack = require('webpack');
var nodeExternals = require('webpack-node-externals');

module.exports = {
  entry: {
    index: './src/core/index.js'
  },
  output: {
    path: path.join(__dirname, './dist'),
    filename: '[name].js'
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  target: 'node',
  externals: [nodeExternals()],
  module: {
    loaders: [
      {
        test: /\.js|jsx$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      }
    ]
  }
}

.babelrc: actually not related to this issue, but just my own code using the await/async

{
  "presets": ["es2015", "stage-0", "stage-3"],
  "plugins": ["syntax-async-functions", "transform-regenerator", "transform-runtime"]
}

code:

import * as Excel from "exceljs";

const filepath = getTmplPath(user);
const workbook = new Excel.Workbook();
await workbook.xlsx.readFile(filepath).then(()=>{console.log(23456)}).catch((e)=>{console.log('[catch]', e)});

[shaosh]

@kigh-ota

I am using babel 6. This is my babelrc

{
  "presets": [
    "es2015",
    "stage-0"
  ],
  "plugins": ["transform-es2015-spread", "transform-object-rest-spread"]
}

Since I excluded the node_modules in the webpack, is babel still going to compile the exceljs?

I used the node v8.4.0 at the beginning. Then I upgraded to v12.13.0. It doesn’t fix the issue.