Question 1

How to check if a file is text or binary using istextorbinary in Node.js?

Accepted Answer

Import the library and call isText or isBinary with the filename and/or buffer. For example, isText('file.txt', buffer) returns true for text files. The README provides detailed examples with both ES modules and CommonJS syntax for various use cases.

Question 2

Is istextorbinary more accurate than just checking file extensions?

Accepted Answer

Yes, istextorbinary combines extension checks with buffer analysis, making it superior for cases where extensions are misleading or absent. It samples multiple buffer points to avoid false positives, unlike simple extension-based methods that can misclassify files like UTF-16.

Question 3

Can istextorbinary detect UTF-16 encoded files?

Accepted Answer

Yes, by using both filename and buffer checks. The library explicitly states that content checks alone are insufficient for UTF-16, so the hybrid approach ensures accurate detection by leveraging extension information when available.

Question 4

How does istextorbinary handle large files without reading the entire file?

Accepted Answer

It reads only 24-byte samples from the start, middle, and end of the buffer. This minimizes I/O overhead while maintaining accuracy, though for very large files, sampling might miss binary data in unsampled regions, as noted in the methodology.

Question 5

istextorbinary vs jschardet for file encoding detection?

Accepted Answer

istextorbinary focuses on binary/text detection with basic UTF-8 encoding check, while jschardet is designed for detailed encoding detection. Use istextorbinary for simple text/binary classification and jschardet for in-depth encoding analysis like identifying specific character sets.

Question 6

Does istextorbinary work in the browser with file uploads?

Accepted Answer

Yes, it has editions compatible with browsers via Skypack or unpkg. You can use it to analyze ArrayBuffer or Blob objects from file inputs, though conversion to buffers may be required as per the library's API documentation.

istextorbinary

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