What is the procedure for accessing a namespace when declaring it globally?

Website Project Background

Currently, I am working on a simple website where users can update their pictures. To achieve this functionality, I am utilizing the Multer library along with Express in Typescript.

Encountered Issue

I am facing a challenge regarding how to access the File type of Multer from its namespace. This is crucial for my project but I am unsure of the correct approach to take.

declare global {
  namespace Express {
    interface Request {
      file: Multer.File;
      files: {
        [fieldname: string]: Multer.File[];
      } | Multer.File[];
    }

  namespace Multer {
    interface File {
      /** Field name specified in the form */
      fieldname: string;
      ...
}

The ultimate goal I aim to achieve is as follows:

app.post('/admin/uploads', async (req, res) => {
    let file: Multer.File = req.files.myFile;
    console.log(file.filename);
    ....
}

Any guidance on how to properly access the Multer namespace would be greatly appreciated.

Answer №1

app.post('/admin/uploads', async (req, res) => {
    let uploadedFile: Express.Multer.File = req.files.myFile;
    console.log(uploadedFile.filename);
    ....
}

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