diff --git a/reference-implementation/__tests__/json/url-specifiers-schemes.json b/reference-implementation/__tests__/json/url-specifiers-schemes.json
new file mode 100644
index 0000000..58a9764
--- /dev/null
+++ b/reference-implementation/__tests__/json/url-specifiers-schemes.json
@@ -0,0 +1,45 @@
+{
+  "importMap": {
+    "imports": {
+      "data:text/": "/lib/test-data/",
+      "about:text/": "/lib/test-about/",
+      "blob:text/": "/lib/test-blob/",
+      "blah:text/": "/lib/test-blah/",
+      "http:text/": "/lib/test-http/",
+      "https:text/": "/lib/test-https/",
+      "file:text/": "/lib/test-file/",
+      "ftp:text/": "/lib/test-ftp/",
+      "ws:text/": "/lib/test-ws/",
+      "wss:text/": "/lib/test-wss/"
+    }
+  },
+  "importMapBaseURL": "https://example.com/app/index.html",
+  "baseURL": "https://example.com/js/app.mjs",
+  "name": "URL-like specifiers",
+  "tests": {
+    "Non-special vs. special schemes": {
+      "expectedResults": {
+        "data:text/javascript,console.log('foo')": "data:text/javascript,console.log('foo')",
+        "data:text/": "https://example.com/lib/test-data/",
+        "about:text/foo": "about:text/foo",
+        "about:text/": "https://example.com/lib/test-about/",
+        "blob:text/foo": "blob:text/foo",
+        "blob:text/": "https://example.com/lib/test-blob/",
+        "blah:text/foo": "blah:text/foo",
+        "blah:text/": "https://example.com/lib/test-blah/",
+        "http:text/foo": "https://example.com/lib/test-http/foo",
+        "http:text/": "https://example.com/lib/test-http/",
+        "https:text/foo": "https://example.com/lib/test-https/foo",
+        "https:text/": "https://example.com/lib/test-https/",
+        "ftp:text/foo": "https://example.com/lib/test-ftp/foo",
+        "ftp:text/": "https://example.com/lib/test-ftp/",
+        "file:text/foo": "https://example.com/lib/test-file/foo",
+        "file:text/": "https://example.com/lib/test-file/",
+        "ws:text/foo": "https://example.com/lib/test-ws/foo",
+        "ws:text/": "https://example.com/lib/test-ws/",
+        "wss:text/foo": "https://example.com/lib/test-wss/foo",
+        "wss:text/": "https://example.com/lib/test-wss/"
+      }
+    }
+  }
+}
diff --git a/reference-implementation/__tests__/json/url-specifiers.json b/reference-implementation/__tests__/json/url-specifiers.json
index 8793b2c..aff55c4 100644
--- a/reference-implementation/__tests__/json/url-specifiers.json
+++ b/reference-implementation/__tests__/json/url-specifiers.json
@@ -9,14 +9,7 @@
       "/test/": "/lib/url-trailing-slash/",
       "./test/": "/lib/url-trailing-slash-dot/",
       "/test": "/lib/test1.mjs",
-      "../test": "/lib/test2.mjs",
-      "data:text/": "/lib/test-data/",
-      "about:text/": "/lib/test-about/",
-      "blob:text/": "/lib/test-blob/",
-      "blah:text/": "/lib/test-blah/",
-      "file:text/": "/lib/test-file/",
-      "ftp:text/": "/lib/test-ftp/",
-      "ws:text/": "/lib/test-ws/"
+      "../test": "/lib/test2.mjs"
     }
   },
   "importMapBaseURL": "https://example.com/app/index.html",
@@ -54,24 +47,6 @@
       "expectedResults": {
         "/test": "https://example.com/lib/test2.mjs"
       }
-    },
-    "Non-special vs. special schemes": {
-      "expectedResults": {
-        "data:text/javascript,console.log('foo')": "data:text/javascript,console.log('foo')",
-        "data:text/": "https://example.com/lib/test-data/",
-        "about:text/foo": "about:text/foo",
-        "about:text/": "https://example.com/lib/test-about/",
-        "blob:text/foo": "blob:text/foo",
-        "blob:text/": "https://example.com/lib/test-blob/",
-        "blah:text/foo": "blah:text/foo",
-        "blah:text/": "https://example.com/lib/test-blah/",
-        "ftp:text/foo": "https://example.com/lib/test-ftp/foo",
-        "ftp:text/": "https://example.com/lib/test-ftp/",
-        "file:text/foo": "https://example.com/lib/test-file/foo",
-        "file:text/": "https://example.com/lib/test-file/",
-        "ws:text/foo": "https://example.com/lib/test-ws/foo",
-        "ws:text/": "https://example.com/lib/test-ws/"
-      }
     }
   }
 }
diff --git a/reference-implementation/lib/utils.js b/reference-implementation/lib/utils.js
index 515395c..e0d0bbd 100644
--- a/reference-implementation/lib/utils.js
+++ b/reference-implementation/lib/utils.js
@@ -19,5 +19,5 @@ exports.tryURLLikeSpecifierParse = (specifier, baseURL) => {
 };
 
 // https://url.spec.whatwg.org/#special-scheme
-const specialProtocols = new Set(["ftp:", "file:", "http:", "https:", "ws:", "wss:"]);
+const specialProtocols = new Set(['ftp:', 'file:', 'http:', 'https:', 'ws:', 'wss:']);
 exports.isSpecial = url => specialProtocols.has(url.protocol);