sourcemap

package
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Published: Nov 3, 2026 License: MIT Imports: 4 Imported by: 0

Documentation

Overview

Package sourcemap reads version 3 source maps, as bundlers write them beside a script, to find where a place in the bundle came from.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Map

type Map struct {
	// contains filtered or unexported fields
}

Map is a decoded source map.

func Parse

func Parse(data []byte) (*Map, error)

Parse decodes a source map. It skips a segment that names no source, and rejects a map whose mappings are not well formed.

func (*Map) Locate

func (m *Map) Locate(line, column int) (Position, bool)

Locate returns where the generated line and column, from 1, came from: the last segment at or before the column. A column of 0 takes the line's first segment. It returns false for a line with no segment there.

type Position

type Position struct {
	// Source is the file as the map names it, relative to the map's
	// directory unless the map named it absolute.
	Source       string
	Line, Column int
}

Position is a place in a source file, line and column from 1.

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