README.md

18042 - '{0}' is a type and cannot be imported in JavaScript files

🔍 Regex Patterns

regexFind: /import\s*\{\s*([A-Z][a-zA-Z0-9_$]*)\s*\}\s*from\s*['"][^'"]+['"]/
regexReplace: // @ts-ignore
// import { $1 } from './types' // Use JSDoc instead

💡 Suggestion

Convert TypeScript type imports to JSDoc type annotations in JavaScript files. Use @typedef or inline JSDoc comments instead of import statements for types.

📝 Examples

Example 1: Type import in JavaScript file

-  import { MyType } from './types'
+  /** @typedef {Object} MyType
+   * @property {string} name
+   */

const value = { name: 'test' }

Explanation: Replace type import with JSDoc typedef

Example 2: Multiple type imports

-  import { User, Product } from './types'
+  /** @typedef {Object} User
+   * @typedef {Object} Product
+   */

+  /** @param {User} user */
function processUser(user) { }

Explanation: Replace multiple type imports with JSDoc typedefs

🖼️ Visual Output

Command

npx tsc ./docs/18042/index.js --noEmit --pretty --allowJs --checkJs

Result

docs/18042/index.js:1:10 - error TS18042: 'MyType' is a type and cannot be imported in JavaScript files. Use 'import("./types").MyType' in a JSDoc type annotation.

1 import { MyType } from './types'
          ~~~~~~

OR (without --pretty flag):

docs/18042/index.js(1,10): error TS18042: 'MyType' is a type and cannot be imported in JavaScript files. Use 'import("./types").MyType' in a JSDoc type annotation.