File Upload#

Teasim handles attachment of multipart/form-data to Context.body by default.

import { Teasim, t } from "teasim";

const app = new Teasim()
  .post("/single", ({ body: { file } }) => file, {
    body: t.Object({
      file: t.File(),
    }),
  })
  .listen(8080);

File validation#

You can use t.File, and t.Files to strictly validate files:

• t.File: validate single file as Blob
• t.Files: validate multiple files (array) as Blob[]

import { Teasim, t } from "teasim";

const app = new Teasim().post("/multiple", ({ body: { files } }) => files[0], {
  body: t.Object({
    files: t.Files({
      type: ["image", "video"],
    }),
  }),
});

Validation for t.File consists of:

• type: content type of the files using String.includes
• minSize: minimum file size
• maxSize: maximum file size

And for t.Files extends t.File with:

• minItems: minimum array size of files
• maxItems: maximum array size of files