Remove the sourceMapTarget option from core and implement it in babel-cli. (#7500)

packages/babel-cli/src/babel/dir.js

@@ -28,7 +28,6 @@ export default function(commander, filenames, opts) {
       defaults(
         {
           sourceFileName: slash(path.relative(dest + "/..", src)),
-          sourceMapTarget: path.basename(relative),
         },
         opts,
       ),
@@ -44,6 +43,7 @@ export default function(commander, filenames, opts) {
         ) {
           const mapLoc = dest + ".map";
           res.code = util.addSourceMappingUrl(res.code, mapLoc);
+          res.map.file = path.basename(relative);
           outputFileSync(mapLoc, JSON.stringify(res.map));
         }
 

packages/babel-cli/src/babel/file.js

@@ -16,7 +16,10 @@ export default function(commander, filenames, opts) {
 
   const buildResult = function() {
     const map = new sourceMap.SourceMapGenerator({
-      file: path.basename(commander.outFile || "") || "stdout",
+      file:
+        commander.sourceMapTarget ||
+        path.basename(commander.outFile || "") ||
+        "stdout",
       sourceRoot: opts.sourceRoot,
     });
 

packages/babel-cli/src/babel/index.js

@@ -259,6 +259,7 @@ delete opts.configFile;
 delete opts.deleteDirOnStart;
 delete opts.keepFileExtension;
 delete opts.relative;
+delete opts.sourceMapTarget;
 
 // Commander will default the "--no-" arguments to true, but we want to leave them undefined so that
 // @babel/core can handle the default-assignment logic on its own.