False positive eslint-config-prettier eslint-plugin-prettier

[VincentLanglet]

Bug Description

Unused devDependencies

Code snippets

Used in the package json.

"eslintConfig": {
    "extends": [
      "react-app",
      "plugin:prettier/recommended"
    ]
  },

Versions

• node -v: 11.6.0
• npm -v: 6.5.0-next.0
• depcheck --version: 0.7.1

[cyrilchapon]

I think I found why.

Specifying the eslint config inside package.json esLintConfig leads to false positive, whereas using a .eslintrc file with exact same config seems to trigger the special mode "eslint" which ignores those files

[cyrilchapon]

Exact same additional bug : the package.json "parser": "babel-eslint" (be it at the root of package.json or inside esLintConfig leads to babel-eslint being reported.

This is not the case when set inside .eslintrc file