Expose the option to embed sources in the source map.

options.go

@@ -106,6 +106,9 @@ type Args struct {
 	// If enabled, a sourcemap will be generated and returned in Result.
 	EnableSourceMap bool
 
+	// If enabled, sources will be embedded in the generated source map.
+	SourceMapIncludeSources bool
+
 	// Custom resolver to use to resolve imports.
 	// If set, this will be the first in the resolver chain.
 	ImportResolver ImportResolver

transpiler.go

@@ -162,7 +162,8 @@ func (t *Transpiler) Execute(args Args) (Result, error) {
 						Url:    args.URL,
 					},
 				},
-				SourceMap: args.EnableSourceMap,
+				SourceMap:               args.EnableSourceMap,
+				SourceMapIncludeSources: args.SourceMapIncludeSources,
 			},
 		}
 

transpiler_test.go

@@ -78,6 +78,7 @@ func TestTranspilerVariants(t *testing.T) {
 	}{
 		{"Output style compressed", Options{}, Args{Source: "div { color: #ccc; }", OutputStyle: OutputStyleCompressed}, Result{CSS: "div{color:#ccc}"}},
 		{"Enable Source Map", Options{}, Args{Source: "div{color:blue;}", URL: "file://myproject/main.scss", OutputStyle: OutputStyleCompressed, EnableSourceMap: true}, Result{CSS: "div{color:blue}", SourceMap: "{\"version\":3,\"sourceRoot\":\"\",\"sources\":[\"file://myproject/main.scss\"],\"names\":[],\"mappings\":\"AAAA\"}"}},
+		{"Enable Source Map with sources", Options{}, Args{Source: "div{color:blue;}", URL: "file://myproject/main.scss", OutputStyle: OutputStyleCompressed, EnableSourceMap: true, SourceMapIncludeSources: true}, Result{CSS: "div{color:blue}", SourceMap: "{\"version\":3,\"sourceRoot\":\"\",\"sources\":[\"file://myproject/main.scss\"],\"names\":[],\"mappings\":\"AAAA\",\"sourcesContent\":[\"div{color:blue;}\"]}"}},
 		{"Sass syntax", Options{}, Args{
 			Source: `$font-stack:    Helvetica, sans-serif
 $primary-color: #333