Fix overwriting existing sourcesContent in sourcemaps (#4567)

2021-01-18 15:44:24 -08:00
parent b57bae4b9e
commit 994293e972
2 changed files with 36 additions and 1 deletions
--- a/lib/sourcemap.js
+++ b/lib/sourcemap.js
@@ -144,7 +144,9 @@ function SourceMap(options) {
            add(source, gen_line, gen_col, orig_line, orig_col, name);
        } : add,
        setSourceContent: sources_content ? function(source, content) {
-            sources_content[source] = content;
+            if (!(source in sources_content)) {
+                sources_content[source] = content;
+            }
        } : noop,
        toString: function() {
            return JSON.stringify({