0.1.3

notes.txt

@@ -3,3 +3,6 @@ benefits of eTry
 - you can wrap calls in it, as it's an expression, not a statement like try/catch
 
 note that it does not work with async/await, where you're stuck with the manual approach
+
+TODO:
+- Add a (maybe)fromGraphQL utility for converting GraphQL's wrapper errors (with `originalError`) into a standard error chain

package.json

@@ -1,6 +1,6 @@
 {
   "name": "error-chain",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "main": "index.js",
   "repository": "git@git.cryto.net:joepie91/node-error-chain.git",
   "author": "Sven Slootweg <admin@cryto.net>",

src/packages/create/index.js

@@ -11,6 +11,13 @@ const forbidSpecialProperties = require("./validators/forbid-special-properties"
 const isErrorConstructor = require("./validators/is-error-constructor");
 const isContextSchema = require("./validators/is-context-schema");
 
+function safeAssign(a, ... rest) {
+	let previousPrototype = a.__proto__;
+	Object.assign(a, ... rest);
+	a.__proto__ = previousPrototype;
+	return a;
+}
+
 module.exports = function createCustomErrorType(_name, _options) {
 	let [ name, options ] = validateArguments(arguments, {
 		name: [ required, isString ],
@@ -48,7 +55,7 @@ module.exports = function createCustomErrorType(_name, _options) {
 		}
 
 		ErrorConstructor._assignDefaultProperties(this);
-		Object.assign(this, context);
+		safeAssign(this, context);
 	};
 
 	ErrorConstructor._assignDefaultProperties = function (errorObject) {
@@ -58,7 +65,7 @@ module.exports = function createCustomErrorType(_name, _options) {
 			options.inheritsFrom._assignDefaultProperties(errorObject);
 		}
 
-		Object.assign(errorObject, options.context);
+		safeAssign(errorObject, options.context);
 	};
 	
 	ErrorConstructor.prototype = Object.create(options.inheritsFrom.prototype);

src/packages/reserved-properties/index.js

@@ -7,6 +7,5 @@ module.exports = [
 	"message",
 	"stack",
 	"cause",
-	"__proto__",
 	"constructor"
 ];