this.escape isn't bound in these maps, so this.dialect was undefined

lib/dialects/postgres/query-generator.js

@@ -173,10 +173,10 @@ module.exports = (function() {
         }
         }
       }
       }
       if ( col && ((!!coltype && coltype.match(/\[\]$/) !== null) || (col.toString().match(/\[\]$/) !== null))) {
       if ( col && ((!!coltype && coltype.match(/\[\]$/) !== null) || (col.toString().match(/\[\]$/) !== null))) {
-        _value = 'ARRAY[' + value.map(this.escape).join(',') + ']::' + (!!col.type ? col.type : col.toString())
+        _value = 'ARRAY[' + value.map(this.escape.bind(this)).join(',') + ']::' + (!!col.type ? col.type : col.toString())
         return [_key, _value].join(" && ")
         return [_key, _value].join(" && ")
       } else {
       } else {
-        _value = "(" + value.map(this.escape).join(',') + ")"
+        _value = "(" + value.map(this.escape.bind(this)).join(',') + ")"
         return [_key, _value].join(" " + logicResult + " ")
         return [_key, _value].join(" " + logicResult + " ")
       }
       }
     },
     },