ESLint is not a constructor

Question

I have made the porting to eslint-webpack-plugin and I am getting the error "ESLint is not a constructor", the relevant snippet code is:

const ESLintPlugin = require('eslint-webpack-plugin');

  const plugins = [
    new webpack.DefinePlugin(productionEnvironmentVariables),
    new ESLintPlugin({
      overrideConfigFile: path.resolve(configPath, '.eslintrc.json')
    })
  ];

Any idea what is wrong? I have tried also with new ESLintPlugin() and ESLintPlugin({}).

Webpack version is ^4.44.2 Eslint version is ^6.8.0 eslint-webpack-plugin is ^2.1.0

Thank you in advance and regards.

Probably because when I installed eslint-webpack-plugin I installed automatically the latest version of it and I did not update the rest of my packages, including Eslint. When you do that there are high chances there is gonna be incompatible versions between your dependencies if they depend on each other. — Javier Guzmán, Dec 22 '20 at 06:43
Did the same, now getting the following error: TypeError: Class constructor ESLintWebpackPlugin cannot be invoked without 'new'. Any clue? — Constantine Ch, Oct 27 '21 at 21:00

score 18 · Answer 1 · answered Dec 30 '20 at 07:58

18

You also need to install eslint >= 7 from npm, if you haven't already:

answered Dec 30 '20 at 07:58

hanyi tim

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ESLint is not a constructor

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