improve doc for errormapping (see issue spring-media#24, thanks to @mohitp-cci)

cgohlke · cgohlke · commit 7aa60888cb39 · 2019-05-28T09:08:16.000+02:00
diff --git a/README.md b/README.md
@@ -103,16 +103,21 @@ exports.handler = router.handler({
             {
                 path: '/graphql',
                 method: 'POST',
-                action: (request, context) => doAnything(request.body)
+                action: (request, context) => doThrowAnException(request.body)
             }
         ],
         debug: true,
         errorMapping: {
             'NotFound': 404,
+            'MyCustomError': 429,
             'ServerError': 500
         }
     }
 });
+
+function doThrowAnException(body) {
+    throw {reason: 'MyCustomError', message: 'Throw an error for this example'}
+}
 ``` 
 
 With the key word `errorMapping` shown in the example above you can custom mapping of thrown errors to http response code error.

Original file line number	Diff line number	Diff line change
`@@ -103,16 +103,21 @@ exports.handler = router.handler({`
`103`	`103`	`{`
`104`	`104`	`path: '/graphql',`
`105`	`105`	`method: 'POST',`
`106`		`- action: (request, context) => doAnything(request.body)`
	`106`	`+ action: (request, context) => doThrowAnException(request.body)`
`107`	`107`	`}`
`108`	`108`	`],`
`109`	`109`	`debug: true,`
`110`	`110`	`errorMapping: {`
`111`	`111`	`'NotFound': 404,`
	`112`	`+ 'MyCustomError': 429,`
`112`	`113`	`'ServerError': 500`
`113`	`114`	`}`
`114`	`115`	`}`
`115`	`116`	`});`
	`117`	`+`
	`118`	`+function doThrowAnException(body) {`
	`119`	`+ throw {reason: 'MyCustomError', message: 'Throw an error for this example'}`
	`120`	`+}`
`116`	`121`	```
`117`	`122`
`118`	`123`	With the key word `errorMapping` shown in the example above you can custom mapping of thrown errors to http response code error.