SourceMap

The SourceMap HTTP response header links generated code to a source map, enabling the browser to reconstruct the original source and present the reconstructed original in the debugger.

Header type Response header
Forbidden header name no

Syntax

SourceMap: <url>
X-SourceMap: <url> (deprecated)

Directives

<url>

A relative (to the request URL) or absolute URL pointing to a source map file.

Examples

SourceMap: /path/to/file.js.map

Specifications

Specification
Source Map Revision 3 Proposal
# h.lmz475t4mvbx

Browser compatibility

BCD tables only load in the browser

See also