1 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 2 // use this file except in compliance with the License. You may obtain a copy of 3 // the License at 4 // 5 // http://www.apache.org/licenses/LICENSE-2.0 6 // 7 // Unless required by applicable law or agreed to in writing, software 8 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 9 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 10 // License for the specific language governing permissions and limitations under 11 // the License. 12 13 //go:build js 14 15 package bindings 16 17 import ( 18 "fmt" 19 20 "github.com/gopherjs/gopherjs/js" 21 ) 22 23 // RecoverError recovers from a thrown JS error. If an error is caught, err 24 // is set to its value. 25 // 26 // To use, put this at the beginning of a function: 27 // 28 // defer RecoverError(&err) 29 func RecoverError(err *error) { 30 if r := recover(); r != nil { 31 switch t := r.(type) { 32 case *js.Object: 33 *err = NewPouchError(t) 34 case error: 35 // This shouldn't ever happen, but just in case 36 *err = t 37 default: 38 // Catch all for everything else 39 *err = fmt.Errorf("%v", r) 40 } 41 } 42 } 43