sniff

Documentation

Overview

Package sniff detects the module format of a JavaScript file from its bytes. No JS parser; it strips string and comment content and looks for reserved-token signatures that survive minification. Best-effort.

Index

• Constants
• func Format(src []byte) string
• func StripSourcemapURL(src []byte) []byte

Constants

const (
	ESM      = "esm"
	UMD      = "umd"
	IIFE     = "iife"
	CJS      = "cjs"
	AMD      = "amd"
	SystemJS = "system"
	Unknown  = "unknown"
)

Functions

func Format

func Format(src []byte) string

Format detects the module format. Order matters: UMD wrappers contain markers for several other formats, so UMD wins first.

func StripSourcemapURL

func StripSourcemapURL(src []byte) []byte

StripSourcemapURL removes every sourceMappingURL directive, preserving surrounding newlines so stack traces stay aligned.