diff --git a/packages/rollup/test/__snapshots__/splitting.test.js.snap b/packages/rollup/test/__snapshots__/splitting.test.js.snap
index ef0e8485f..f0ff4434c 100644
--- a/packages/rollup/test/__snapshots__/splitting.test.js.snap
+++ b/packages/rollup/test/__snapshots__/splitting.test.js.snap
@@ -6,6 +6,7 @@ Array [
     "file": "a.css",
     "text": "/* packages/rollup/test/specimens/css-dependencies/a.css */
 .a {
+
     color: aqua;
 }
 ",
@@ -14,6 +15,7 @@ Array [
     "file": "b.css",
     "text": "/* packages/rollup/test/specimens/css-dependencies/b.css */
 .b {
+
     color: blue;
 }
 ",
@@ -32,17 +34,18 @@ Array [
 exports[`/rollup.js code splitting should dedupe chunk names using rollup's incrementing counter logic (hashed) 1`] = `
 Array [
   Object {
-    "file": "a-8dc3c49a.css",
+    "file": "a-54b5f108.css",
     "text": "/* packages/rollup/test/specimens/multiple-chunks/a.css */
 .a {
+    
     color: aqua;
 }
 
-/*# sourceMappingURL=a-8dc3c49a.css.map */",
+/*# sourceMappingURL=a-54b5f108.css.map */",
   },
   Object {
-    "file": "a-8dc3c49a.css.map",
-    "text": "{\\"version\\":3,\\"sources\\":[\\"../../../specimens/multiple-chunks/a.css\\"],\\"names\\":[],\\"mappings\\":\\"AAAA,yDAAA;AAAA;IAGI,WAAW;AACf\\",\\"file\\":\\"a-[hash].css\\",\\"sourcesContent\\":[\\".a {\\\\n    composes: a from \\\\\\"./subfolder/a.css\\\\\\";\\\\n    \\\\n    color: aqua;\\\\n}\\\\n\\"]}",
+    "file": "a-54b5f108.css.map",
+    "text": "{\\"version\\":3,\\"sources\\":[\\"../../../specimens/multiple-chunks/a.css\\"],\\"names\\":[],\\"mappings\\":\\"AAAA,yDAAA;AAAA;;IAGI,WAAW;AACf\\",\\"file\\":\\"a-[hash].css\\",\\"sourcesContent\\":[\\".a {\\\\n    composes: a from \\\\\\"./subfolder/a.css\\\\\\";\\\\n    \\\\n    color: aqua;\\\\n}\\\\n\\"]}",
   },
   Object {
     "file": "a-bfb0bddb.css",
@@ -55,17 +58,18 @@ Array [
     "text": "{\\"version\\":3,\\"sources\\":[\\"../../../specimens/multiple-chunks/subfolder/a.css\\"],\\"names\\":[],\\"mappings\\":\\"AAAA,mEAAA;AAAA,KAAK,YAAY,EAAE\\",\\"file\\":\\"a-[hash].css\\",\\"sourcesContent\\":[\\".a { color: azure; }\\"]}",
   },
   Object {
-    "file": "b-fc0ef588.css",
+    "file": "b-b31885ac.css",
     "text": "/* packages/rollup/test/specimens/multiple-chunks/b.css */
 .b {
+
     color: blue;
 }
 
-/*# sourceMappingURL=b-fc0ef588.css.map */",
+/*# sourceMappingURL=b-b31885ac.css.map */",
   },
   Object {
-    "file": "b-fc0ef588.css.map",
-    "text": "{\\"version\\":3,\\"sources\\":[\\"../../../specimens/multiple-chunks/b.css\\"],\\"names\\":[],\\"mappings\\":\\"AAAA,yDAAA;AAAA;IAGI,WAAW;AACf\\",\\"file\\":\\"b-[hash].css\\",\\"sourcesContent\\":[\\".b {\\\\n    composes: a from \\\\\\"./subfolder/a.css\\\\\\";\\\\n\\\\n    color: blue;\\\\n}\\\\n\\"]}",
+    "file": "b-b31885ac.css.map",
+    "text": "{\\"version\\":3,\\"sources\\":[\\"../../../specimens/multiple-chunks/b.css\\"],\\"names\\":[],\\"mappings\\":\\"AAAA,yDAAA;AAAA;;IAGI,WAAW;AACf\\",\\"file\\":\\"b-[hash].css\\",\\"sourcesContent\\":[\\".b {\\\\n    composes: a from \\\\\\"./subfolder/a.css\\\\\\";\\\\n\\\\n    color: blue;\\\\n}\\\\n\\"]}",
   },
 ]
 `;
@@ -86,6 +90,7 @@ Array [
     "file": "a2.css",
     "text": "/* packages/rollup/test/specimens/multiple-chunks/a.css */
 .a {
+    
     color: aqua;
 }
 
@@ -93,12 +98,13 @@ Array [
   },
   Object {
     "file": "a2.css.map",
-    "text": "{\\"version\\":3,\\"sources\\":[\\"../../../specimens/multiple-chunks/a.css\\"],\\"names\\":[],\\"mappings\\":\\"AAAA,yDAAA;AAAA;IAGI,WAAW;AACf\\",\\"file\\":\\"a.css\\",\\"sourcesContent\\":[\\".a {\\\\n    composes: a from \\\\\\"./subfolder/a.css\\\\\\";\\\\n    \\\\n    color: aqua;\\\\n}\\\\n\\"]}",
+    "text": "{\\"version\\":3,\\"sources\\":[\\"../../../specimens/multiple-chunks/a.css\\"],\\"names\\":[],\\"mappings\\":\\"AAAA,yDAAA;AAAA;;IAGI,WAAW;AACf\\",\\"file\\":\\"a.css\\",\\"sourcesContent\\":[\\".a {\\\\n    composes: a from \\\\\\"./subfolder/a.css\\\\\\";\\\\n    \\\\n    color: aqua;\\\\n}\\\\n\\"]}",
   },
   Object {
     "file": "b.css",
     "text": "/* packages/rollup/test/specimens/multiple-chunks/b.css */
 .b {
+
     color: blue;
 }
 
@@ -106,7 +112,7 @@ Array [
   },
   Object {
     "file": "b.css.map",
-    "text": "{\\"version\\":3,\\"sources\\":[\\"../../../specimens/multiple-chunks/b.css\\"],\\"names\\":[],\\"mappings\\":\\"AAAA,yDAAA;AAAA;IAGI,WAAW;AACf\\",\\"file\\":\\"b.css\\",\\"sourcesContent\\":[\\".b {\\\\n    composes: a from \\\\\\"./subfolder/a.css\\\\\\";\\\\n\\\\n    color: blue;\\\\n}\\\\n\\"]}",
+    "text": "{\\"version\\":3,\\"sources\\":[\\"../../../specimens/multiple-chunks/b.css\\"],\\"names\\":[],\\"mappings\\":\\"AAAA,yDAAA;AAAA;;IAGI,WAAW;AACf\\",\\"file\\":\\"b.css\\",\\"sourcesContent\\":[\\".b {\\\\n    composes: a from \\\\\\"./subfolder/a.css\\\\\\";\\\\n\\\\n    color: blue;\\\\n}\\\\n\\"]}",
   },
 ]
 `;
@@ -117,6 +123,7 @@ Array [
     "file": "dependencies.css",
     "text": "/* packages/rollup/test/specimens/dependencies.css */
 .wooga {
+
     background: blue;
 }
 ",
@@ -245,6 +252,7 @@ Array [
     "file": "a.css",
     "text": "/* packages/rollup/test/specimens/dynamic-imports/a.css */
 .a {
+
     color: aqua;
 }
 ",
@@ -257,6 +265,7 @@ Array [
 }
 /* packages/rollup/test/specimens/dynamic-imports/b.css */
 .b {
+    
     color: blue;
 }
 ",
@@ -265,6 +274,7 @@ Array [
     "file": "c.css",
     "text": "/* packages/rollup/test/specimens/dynamic-imports/c.css */
 .c {
+    
     color: cyan;
 }
 ",
@@ -277,6 +287,7 @@ Array [
 }
 /* packages/rollup/test/specimens/dynamic-imports/d.css */
 .d {
+    
     color: darkred;
 }
 ",
@@ -290,6 +301,7 @@ Array [
     "file": "a.css",
     "text": "/* packages/rollup/test/specimens/manual-chunks/a.css */
 .a {
+
     color: red;
 }
 ",
@@ -298,6 +310,7 @@ Array [
     "file": "b.css",
     "text": "/* packages/rollup/test/specimens/manual-chunks/b.css */
 .b {
+
     color: blue;
 }
 ",
@@ -407,6 +420,7 @@ Array [
     "file": "dependencies.css",
     "text": "/* packages/rollup/test/specimens/dependencies.css */
 .wooga {
+
     background: blue;
 }
 ",
@@ -428,6 +442,7 @@ Array [
     "file": "a.css",
     "text": "/* packages/rollup/test/specimens/css-chunks/a.css */
 .a {
+
     color: aqua;
 }
 ",
@@ -436,6 +451,7 @@ Array [
     "file": "b.css",
     "text": "/* packages/rollup/test/specimens/css-chunks/b.css */
 .b {
+    
     color: blue;
 }
 ",
@@ -444,6 +460,7 @@ Array [
     "file": "c.css",
     "text": "/* packages/rollup/test/specimens/css-chunks/c.css */
 .c {
+
     color: cyan;
 }
 ",
@@ -471,10 +488,12 @@ Array [
 }
 /* packages/rollup/test/specimens/common-splitting/a.css */
 .a {
+
     color: aqua;
 }
 /* packages/rollup/test/specimens/common-splitting/b.css */
 .b {
+
     color: blue;
 }
 ",