1 files changed, 0 insertions, 2 deletions
diff --git a/lib/propmangle.js b/lib/propmangle.js
index 04194393..e47497de 100644
--- a/lib/propmangle.js
+++ b/lib/propmangle.js
@@ -110,7 +110,6 @@ function mangle_properties(ast, options) {
         cache: null,
         debug: false,
         keep_quoted: false,
-        only_cache: false,
         regex: null,
         reserved: null,
     }, true);
@@ -213,7 +212,6 @@ function mangle_properties(ast, options) {
 
     function can_mangle(name) {
         if (unmangleable[name]) return false;
-        if (options.only_cache) return cache.has(name);
         if (/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name)) return false;
         return true;
     }