is_text_file() — svelte Function Reference

Architecture documentation for the is_text_file() function in hash.js from the svelte codebase.

Function javascript Compiler Parser

Entity Profile

Compiler→ Parser→ is_text_file() — svelte Function Reference

Dependency Diagram

graph TD
  8a30439d_fe64_ea54_bcb4_9d9c4272cbe0["is_text_file()"]
  701d9da6_675f_b6d1_ad30_b067ef212b63["hash.js"]
  8a30439d_fe64_ea54_bcb4_9d9c4272cbe0 -->|defined in| 701d9da6_675f_b6d1_ad30_b067ef212b63
  style 8a30439d_fe64_ea54_bcb4_9d9c4272cbe0 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

playgrounds/sandbox/scripts/hash.js lines 9–26

function is_text_file(filepath) {
	const buffer = fs.readFileSync(filepath);
	// Check for null bytes which indicate binary files
	for (let i = 0; i < buffer.length; i++) {
		if (buffer[i] === 0) {
			return false;
		}
	}
	// Validate UTF-8 encoding
	try {
		const text = buffer.toString('utf-8');
		// Verify round-trip encoding to ensure valid UTF-8
		const encoded = Buffer.from(text, 'utf-8');
		return buffer.equals(encoded);
	} catch {
		return false;
	}
}