CODEWITHSUNDEEP
typescript
Lucas Moulin
Lucas Moulin

Reputation: 2550

Can't cast File as Blob

I'm trying to cast a File as a Blob but apparently I can't even File being a subclass of Blob.

I've tried it like this: <Blob>file and this: file as Blob. And the error is always the same:

Type 'File' cannot be converted to type 'Blob'. Property 'size' is missing in type 'File'.

What am I doing wrong?

Upvotes: 2

Views: 7769

Answers (1)

Aluan Haddad
Aluan Haddad

Reputation: 31863

The following displays no errors at all.

declare const file: File;

const blob = file as Blob;

Make sure your TypeScript version is up to date (2.3.2 is the latest as of this writing)

You can see this in action in the TypeScript Playground

Upvotes: 7

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