Why the File Reader is neccesary?

[blogcraft]

angular-file-validator/projects/ng-file-validator-lib/src/lib/file-validator.service.ts

Line 33 in 056c318

const arr = new Uint8Array(fileReader.result as ArrayBuffer).subarray(0, 4);

Why use a file reader to get the contentType when the file.type already has the contentType of the file.

This code as it stands cant know the difference between a .docx and an xlsx.

[mabdullahse]

Hi, can you raise a PR for extending the functionality to detect .docx and .xlsx?
@blogcraft