2 files changed, 9 insertions, 5 deletions
diff --git a/src/intertyper.js b/src/intertyper.js
index 8eebd22d..80fcff38 100644
--- a/src/intertyper.js
+++ b/src/intertyper.js
@@ -1110,11 +1110,14 @@ function intertyper(lines, sidePass, baseLineNums) {
   // Input
 
   lineSplitter().forEach(function(line) {
-    var item = tryFastPaths(line);
-    if (item) {
-      finalResults.push(item);
-      fastPaths++;
-      return;
+    var item;
+    if (COMPILER_FASTPATHS) {
+      item = tryFastPaths(line);
+      if (item) {
+        finalResults.push(item);
+        fastPaths++;
+        return;
+      }
     }
     slowPaths++;
 
diff --git a/src/settings.js b/src/settings.js
index 7a9e6b76..5e5d50f6 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -435,6 +435,7 @@ var EXPORT_NAME = 'Module'; // Global variable to export the module as for envir
                             // loading system (e.g. the browser and SM shell).
 
 var COMPILER_ASSERTIONS = 0; // costly (slow) compile-time assertions
+var COMPILER_FASTPATHS = 1; // use fast-paths to speed up compilation
 
 // Compiler debugging options
 var DEBUG_TAGS_SHOWING = [];