What type of file does node read?

Node method of reading file type: 1. Through "res.writeHead(200, {'Content-type': mime.getType(`public/a.webp`)});res.write( chunk);" method to pass in the file path to get the "mime-type"; 2. Get the file type through the file fileTypeFromFile or Buffer stream.

#The operating environment of this tutorial: Windows 10 system, node v10.16.0 version, Dell G3 computer.

What type of file does node read?

Node.js gets the file type of the file

When using Node for file processing, we often need different types of files for different processing, and Return the corresponding request header to the client. Two plug-ins are recommended here to quickly obtain the file type.

1.mime

You can get the mime-type of the file for request header return

    res.writeHead(200, {
        'Content-type': mime.getType(`public/a.webp`)// image/webp
    });
    res.write(chunk);

You only need to introduce the plug-in, and then use the corresponding function to pass in the file path. Get mime-type

2.file-type

Full-featured, you can type files through files or Buffer streams, and you can not only get mime-type but also file suffix types

import {fileTypeFromFile} from 'file-type';
console.log(await fileTypeFromFile('Unicorn.png'));
//=> {ext: 'png', mime: 'image/png'}

And the usage method is given on the official website, which also obtains the type by passing the file path or Buffer. It also supports Promise, and the weekly download volume of this plug-in is tens of millions (2022-05-29)

Recommended learning: "node.js video tutorial"

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