@pyramation/content-type-stream v0.1.0

content-type-stream

npm install @pyramation/content-type-stream

In my life I've always found that content-types or mimetypes to be totally hacky and different across operating systems and browsers. Also, knowing when to use the magic bytes compared to how we actually use files based on their extensions is never consistent... so this is aimed to make all that simple :)

content-type info

get proper content-type information via streams without ever reading to disk

const readStream = createReadStream(filename);
const { stream, magic, contentType } = await streamContentType({
   readStream,
   filename
});

using steams

the stream it returns can then be used, for example

  const { stream, contentType } = await streamContentType({
    readStream,
    filename
  });
  return await asyncUpload({
    key,
    contentType,
    readStream: stream,
    bucket
  });

contents hash stream

if you want more info with your upload, with ContentStream you can get nice hashes

• uuid: RFC-compliant UUID v5.
• etag: Etag/S3 MD5 sum
• sha: A sha sum

    const contentStream = new ContentStream();
// ...
    readStream.pipe(contentStream);
    contentStream.pipe(uploadStream);

   { 
        uuid: '78160718-8dfa-5cb4-bb50-e479c8c58383',
        sha: 'e6c7c64d292a414941d239c57117b36f24c9f829',
        etag: '64dcb5b3b291074d02c80f600fda3f6e'
    }