diff --git a/lib/ext_json.js b/lib/ext_json.js
index 692920c..dc78353 100644
--- a/lib/ext_json.js
+++ b/lib/ext_json.js
@@ -27,7 +27,9 @@ var keysToCodecs = {
   $oid: codecs.ObjectID,
   $binary: codecs.Binary,
   $symbol: codecs.Symbol,
+  $numberInt: codecs.Int32,
   $numberDecimal: codecs.Decimal128,
+  $numberDouble: codecs.Double,
   $numberLong: codecs.Long,
   $minKey: codecs.MinKey,
   $maxKey: codecs.MaxKey,
@@ -66,7 +68,7 @@ function deserializeValue(self, key, value, options) {
   var keys = Object.keys(value).filter(k => k.startsWith('$') && value[k] != null);
   for (let i = 0; i < keys.length; i++) {
     let c = keysToCodecs[keys[i]];
-    if (c) return c.fromExtendedJSON(BSON, value);
+    if (c) return c.fromExtendedJSON(BSON, value, options);
   }
 
   if (value.$date != null) {
@@ -85,18 +87,6 @@ function deserializeValue(self, key, value, options) {
     return codecs.Code.fromExtendedJSON(BSON, value);
   }
 
-  if (value.$numberDouble != null) {
-    return options.strict
-      ? codecs.Double.fromExtendedJSON(BSON, value)
-      : parseFloat(value.$numberDouble);
-  }
-
-  if (value.$numberInt != null) {
-    return options.strict
-      ? codecs.Int32.fromExtendedJSON(BSON, value)
-      : parseInt(value.$numberInt, 10);
-  }
-
   if (value.$ref != null || value.$dbPointer != null) {
     let v = value.$ref ? value : value.$dbPointer;
 
@@ -119,7 +109,11 @@ function deserializeValue(self, key, value, options) {
 
 const parse = function(text, options) {
   var self = this;
-  options = options || { strict: true };
+  options = options || { relaxed: false };
+
+  // relaxed implies not strict
+  if (typeof options.relaxed === 'boolean') options.strict = !options.relaxed;
+  if (typeof options.strict === 'boolean') options.relaxed = !options.strict;
 
   return JSON.parse(text, function(key, value) {
     return deserializeValue(self, key, value, options);