Struct SourceMapGenerator 

pub struct SourceMapGenerator { /* private fields */ }

Builder for creating source maps incrementally.

Implementations

impl SourceMapGenerator

pub fn new(file: Option<String>) -> Self

Create a new empty source map generator.

pub fn set_source_root(&mut self, root: String)

Set the source root prefix.

pub fn add_source(&mut self, source: &str) -> u32

Register a source file and return its index.

pub fn set_source_content(&mut self, source_idx: u32, content: String)

Set the content for a source file.

pub fn add_name(&mut self, name: &str) -> u32

Register a name and return its index.

pub fn add_to_ignore_list(&mut self, source_idx: u32)

Add a source index to the ignore list.

pub fn add_generated_mapping( &mut self, generated_line: u32, generated_column: u32, )

Add a mapping with no source information (generated-only).

pub fn add_mapping( &mut self, generated_line: u32, generated_column: u32, source: u32, original_line: u32, original_column: u32, )

Add a mapping from generated position to original position.

pub fn add_named_mapping( &mut self, generated_line: u32, generated_column: u32, source: u32, original_line: u32, original_column: u32, name: u32, )

Add a mapping with a name.

pub fn maybe_add_mapping( &mut self, generated_line: u32, generated_column: u32, source: u32, original_line: u32, original_column: u32, ) -> bool

Add a mapping only if it differs from the previous mapping on the same line.

This skips redundant mappings where the source position is identical to the last mapping, which reduces output size without losing information. Used by bundlers and minifiers to avoid bloating source maps.

pub fn to_json(&self) -> String

Generate the source map as a JSON string.

pub fn mapping_count(&self) -> usize

Get the number of mappings.

Trait Implementations

impl Debug for SourceMapGenerator

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.