ApproximateFilter can match multiple values.

lib/filters/approx_filter.js

@@ -48,8 +48,14 @@ ApproximateFilter.prototype.matches = function(target) {
     throw new TypeError('target (object) required');
 
   var matches = false;
-  if (target.hasOwnProperty(this.attribute))
-    matches = (this.value === target[this.attribute]);
+  if (target.hasOwnProperty(this.attribute)) {
+    var tv = target[this.attribute];
+    if (Array.isArray(tv)) {
+      matches = (tv.indexOf(this.value) != -1);
+    } else {
+      matches = (this.value === target[this.attribute]);
+    }
+  }
 
   return matches;
 };

tst/filters/approx.test.js

@@ -57,6 +57,17 @@ test('match true', function(t) {
 });
 
 
+test('match multiple', function(t) {
+  var f = new ApproximateFilter({
+    attribute: 'foo',
+    value: 'bar'
+  });
+  t.ok(f);
+  t.ok(f.matches({ foo: ['steak', 'bar']}));
+  t.ok(!f.matches({ foo: ['nihhh', 'rabbit']}));
+  t.end();
+});
+
 test('match false', function(t) {
   var f = new ApproximateFilter({
     attribute: 'foo',