← Errors
TypeScript error TS2307 is reported when a module import cannot be resolved. This happens when the package is not installed, the path is wrong, or the package lacks TypeScript type declarations.
Why it happens
- •The npm package is referenced but not installed (missing from node_modules).
- •The package exists but has no type declarations and no @types counterpart.
- •A relative path import has a typo or points to a file that does not exist.
- •The moduleResolution setting in tsconfig.json is incompatible with the package's exports field.
Examples
JavaScript
Code that triggers the error
import { format } from "date-fns";Error output
error TS2307: Cannot find module 'date-fns' or its corresponding type declarations.
How to fix it
Run npm install for the missing package. Install @types/package-name if the package lacks built-in types. For relative imports, verify the file path and extension. Check moduleResolution: 'bundler' or 'node16' in tsconfig.json for modern packages.
Fixed code
// First install the package
// npm install date-fns
import { format } from "date-fns";Related errors
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