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Rslint

    no-import-type-side-effects

    Configuration

    rslint.config.ts
    import { defineConfig, ts } from '@rslint/core';

export default defineConfig([
  ts.configs.recommended,
  {
    rules: {
      '@typescript-eslint/no-import-type-side-effects': 'error',
    },
  },
]);

    Rule Details

    Enforce the use of a top-level import type qualifier when an import only has specifiers with inline type qualifiers. Under TypeScript's --verbatimModuleSyntax, inline type specifiers are stripped one by one, which leaves behind an empty import {} from 'mod' — a runtime side-effect import. Hoisting the qualifier to the top level removes the whole statement instead. The rule is auto-fixable.

    Examples of incorrect code for this rule:

    import { type A } from 'mod';
import { type A as AA } from 'mod';
import { type A, type B } from 'mod';
import { type A as AA, type B as BB } from 'mod';

    Examples of correct code for this rule:

    import T from 'mod';
import * as T from 'mod';
import { T } from 'mod';
import type { T } from 'mod';
import type { T, U } from 'mod';
import { type T, U } from 'mod';
import { T, type U } from 'mod';
import type T from 'mod';
import T, { type U } from 'mod';
import type * as T from 'mod';
import 'mod';

    Original Documentation