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 | Title |
|---|---|
| Draft document | Source Map Revision 3 Proposal |
Browser compatibility
BCD tables only load in the browser
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.