SourceMap

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.

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 Title
Draft document Source Map Revision 3 Proposal

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
SourceMap
Yes
Yes
≤79
≤79
55
27
?
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
55
27
Yes
Yes
Yes
Yes
Yes
Yes

See also

© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/SourceMap