Recommended ESLint rules that are already handled by TypeScript are turned off inplugin:@typescript-eslint/recommended.

Theno-unreachable rule is one of the disabled rules because it is covered by the TypeScript compiler errorTS7027. However this TS error issuppressed by default since2.9.1.

This means that when using the recommended rules without explicitly turning off theallowUnreachableCode flag, no ESLint or TS errors will alert the developer of the presence of unreachable code.

I am not sure what the best approach to this is, but it may be worth considering not disablingno-unreachable in the recommended rules or adding a note in the docs...

Repro

{"extends": ["eslint:recommended","plugin:@typescript-eslint/eslint-recommended","plugin:@typescript-eslint/recommended"  ]}

From the ESLintdocs:

functionfn(){x=1;returnx;x=3;// this will never execute}

Expected Result
To be alerted of the unreachable code.

Actual Result
No error reported with the default TypeScript compiler options.

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