[fixed] pass options to array sub schema

fixes #21

src/array.js

@@ -15,7 +15,7 @@ let hasLength = value => !isAbsent(value) && value.length > 0;
 module.exports = ArraySchema
 
 function ArraySchema(){
-  if ( !(this instanceof ArraySchema))
+  if (!(this instanceof ArraySchema))
     return new ArraySchema()
 
   MixedSchema.call(this, { type: 'array'})
@@ -27,11 +27,6 @@ function ArraySchema(){
           values = JSON.parse(values)
         } catch (err){ values = null }
 
-      if (Array.isArray(values))
-          return this._subType
-            ? values.map(this._subType.cast, this._subType)
-            : values
-
       return this.isType(values) ? values : null
     })
   })
@@ -43,6 +38,16 @@ inherits(ArraySchema, MixedSchema, {
     return Array.isArray(v)
   },
 
+  _cast(_value, _opts) {
+    var value = MixedSchema.prototype._cast.call(this, _value)
+
+    //should ignore nulls here
+    if (!this._typeCheck(value) || !this._subType)
+      return value;
+
+    return value.map(v => this._subType.cast(v, _opts))
+  },
+
   _validate(_value, _opts, _state){
     var errors = []
       , context, subType, schema, endEarly, recursive;

test/array.js

@@ -16,7 +16,7 @@ describe('Array types', function(){
   it('should CAST correctly', function(){
     var inst = array();
 
-    inst.cast('[2,3,5,6]').should.eql([2,3,5,6])
+    inst.cast('[2,3,5,6]').should.eql([2, 3, 5, 6])
 
     inst.cast(['4', 5, false]).should.eql(['4', 5, false])
 
@@ -53,6 +53,19 @@ describe('Array types', function(){
     inst.nullable().isType(null).should.equal(true)
   })
 
+  it('should cast children', function(){
+    array()
+      .of(number())
+      .cast(['1', '3']).should.eql([1, 3])
+  })
+
+  it('should pass options to children', function(){
+    array()
+      .of(object({ name: string() }))
+      .cast([{ id: 1, name: 'john' }], { stripUnknown: true })
+      .should.eql([{name: 'john'}])
+  })
+
   it('should VALIDATE correctly', function(){
 
     var inst = array().required().of(number().max(5))