TypeScript Diagnostic

Fix TypeScript TS7016: "Could not find a declaration file for module 'module-name'"

The imported npm package was written in plain JavaScript and does not bundle .d.ts type definitions, and no @types package has been installed.

TS7016: Could not find a declaration file for module

Quick Fix Checklist

  1. Run: npm i -D @types/<package-name>
  2. If no @types package exists: Create a declarations.d.ts file and add declare module "<package-name>";
  3. Verify typeRoots in tsconfig.json includes ["node_modules/@types"]