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typescriptmime-typesfile-type

file-type: extract mime type

I am using the file-type package (https://www.npmjs.com/package/file-type) to determine the mime type of a file from a buffer. The function returns a promise, and I would like to extract only the mime like this application/dicom.

const mimeType = await FileType.fromBuffer(buffer);
console.log(mimeType); // { ext: 'dcm', mime: 'application/dicom' }

Is something like this possible?

const { ext, mime } = await FileType.fromBuffer(buffer);
console.log(ext);
console.log(mime);
Solution

  • You can either do

    const { ext, mime } = await FileType.fromBuffer(buffer) || { mine: 'unknown', ext: 'unknown' }

    or probably even just

    const { ext, mime } = await FileType.fromBuffer(buffer) as FileTypeResult