Add proper, helpful error messages for the dict decoder

schroffl · schroffl · commit b8ef9c927dee · 2024-12-24T12:01:53.000+01:00
diff --git a/index.js b/index.js
@@ -283,8 +283,10 @@
                         if (isOk(child_value)) {
                             result[key] = child_value.value;
                         } else {
-                            // TODO Wrap in key info
-                            return child_value;
+                            var msg = 'Failed to decode dictionary, because attempting to decode the field \'' + key + '\' failed with the following error:\n\n';
+                            msg += child_value.msg;
+                            msg += '\nwhen attempting to decode the field \'' + key + '\' of\n' + toDebugString(value);
+                            return err(msg);
                         }
                     }
 

Original file line number	Diff line number	Diff line change
`@@ -283,8 +283,10 @@`
`283`	`283`	`if (isOk(child_value)) {`
`284`	`284`	`result[key] = child_value.value;`
`285`	`285`	`} else {`
`286`		`- // TODO Wrap in key info`
`287`		`- return child_value;`
	`286`	`+ var msg = 'Failed to decode dictionary, because attempting to decode the field \'' + key + '\' failed with the following error:\n\n';`
	`287`	`+ msg += child_value.msg;`
	`288`	`+ msg += '\nwhen attempting to decode the field \'' + key + '\' of\n' + toDebugString(value);`
	`289`	`+ return err(msg);`
`288`	`290`	`}`
`289`	`291`	`}`
`290`	`292`