[BUG]: Error Cannot create property 'context' on string 'Error generating AST'

[liqiangsu]

Describe the bug
The migrate failed with the following message:

>npx webpack-cli migrate webpack.config.js .
npx: installed 1 in 1.926s
Path must be a string. Received undefined
null

 ✖ ︎Migration aborted due to some errors: 

TypeError: Cannot create property 'context' on string 'Error generating AST'
    at tasks.then.catch.error (\node_modules\listr\index.js:112:19)
    at <anonymous>
  × Reading webpack config
    Migrating config to newest version

To Reproduce

>npx webpack-cli migrate webpack.config.js

Screenshots
The version:
@webpack-cli/migrate@0.1.8
The webpack.config.js

var debug = process.env.NODE_ENV !== "production";
var webpack = require('webpack');
var path = require("path")
var WWW_DIR = path.resolve(__dirname, 'wwwroot');

module.exports = {
    context: __dirname,
    devtool: debug ? "inline-sourcemap" : false,
    entry: "./wwwroot/js/scripts.jsx",
    output: {
        path: __dirname + "/wwwroot/js",
        filename: "scripts.min.js"
    },
    module: {
        loaders: [{
                test: /\.js?/,
                loader: "babel-loader",
                query: {
                    presets: ["react", "es2015", "stage-2"]
                }
            },
            {
                test: /\.json$/,
                loader: 'json-loader'
            }
        ]
    },
    resolve: {
        extensions: ['.js', '.jsx']
    },
    plugins: debug ? [] : [
        new webpack.DefinePlugin({
            "process.env": {
                NODE_ENV: JSON.stringify("production")
            }
        }),
        new webpack.optimize.OccurrenceOrderPlugin(),
        new webpack.optimize.UglifyJsPlugin({ parallel: true, mangle: true, sourcemap: false }),
    ],
};

Please paste the results of webpack-cli info here, and mention other relevant information

  System:
    OS: Windows 10
    CPU: (12) x64 Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz
  Binaries:
    Yarn: 1.17.3 - C:\Program Files (x86)\Yarn\bin\yarn.CMD
    npm: 6.11.2 - C:\Program Files\nodejs\npm.CMD
  npmPackages:
    webpack: ^4.39.2 => 4.39.2
    webpack-cli: ^3.3.7 => 3.3.7
    webpack-dev-server: ^3.8.0 => 3.8.0

[kowsheek]

👍 Having the same issue, with similar kind of set up.

[evenstensberg]

I think this needs a bit work, leaving it open as good first contribution and needs investigation because it needs to be debugged first. Which version are you migrating from/to?

[ohana54]

Same thing happened to me, added some console logs and got the original message:
TypeError: jscodeshift_1.default is not a function
I think jscodeshift doesn't export a default function, that's why it happens.

[evenstensberg]

Could you open a PR?

[ohana54]

I don't know what the right solution is. Shouldn't it not work for everyone? Or is it a specific environment issue?
I see that the import was changed from a require call to a default import call in #834
I'll create a PR anyway to import it correctly and we can continue the discussion there