fix(cast): backport fix from #7290 to 4.x

vkarpov15 · vkarpov15 · commit edf70e44323a · 2019-01-20T11:13:41.000-05:00
diff --git a/lib/cast.js b/lib/cast.js
@@ -255,7 +255,7 @@ module.exports = function cast(schema, obj, options, context) {
             }
           }
         }
-      } else if (val.constructor.name === 'Array' && ['Buffer', 'Array'].indexOf(schematype.instance) === -1) {
+      } else if (Array.isArray(val) && ['Buffer', 'Array'].indexOf(schematype.instance) === -1) {
         var casted = [];
         for (var valIndex = 0; valIndex < val.length; valIndex++) {
           casted.push(schematype.castForQueryWrapper({

Original file line number	Diff line number	Diff line change
`@@ -255,7 +255,7 @@ module.exports = function cast(schema, obj, options, context) {`
`255`	`255`	`}`
`256`	`256`	`}`
`257`	`257`	`}`
`258`		`- } else if (val.constructor.name === 'Array' && ['Buffer', 'Array'].indexOf(schematype.instance) === -1) {`
	`258`	`+ } else if (Array.isArray(val) && ['Buffer', 'Array'].indexOf(schematype.instance) === -1) {`
`259`	`259`	`var casted = [];`
`260`	`260`	`for (var valIndex = 0; valIndex < val.length; valIndex++) {`
`261`	`261`	`casted.push(schematype.castForQueryWrapper({`