Error: Cannot find module '@typescript-eslint/eslint-plugin'

Odd error in my EmberJs app that uses this linter. Dependabot just upgraded me from 1.0.1 to 1.0.3 and linting fails to load with the following error:

Error: Failed to load plugin 'unused-imports' declared in '.eslintrc.js': Cannot find module '@typescript-eslint/eslint-plugin'

I’ve got no direct dependencies to Typescript in this project. My .eslintrc.js is just bringing in the unused-imports plugin and setting these rules:

'use strict';

module.exports = {
  // ...
  plugins: ['ember', 'ember-suave', 'prettier', 'unused-imports'],
  // ...
  rules: {
    // ...
    'unused-imports/no-unused-imports': 2,
    'unused-imports/no-unused-vars': 1,
  },

Let me know if this information helps or if there’s something I can do to help out.

[sweepline]

Thanks, I published v 1.1.0

[enjoylife]

Seeing the same (I’m using flow). Its breaking because there is no conditional import on the ts specific rules,

module.exports.rules = requireIndex(__dirname + "/rules");

therefore its pulling in no-unused-imports-ts.js, which requires the package @typescript-eslint/eslint-plugin. And if your outside of the ts library package ecosystem you are not going to have it.