$U -> $undefined

eps1lon · eps1lon · commit c0dd83fad2f3 · 2023-03-09T09:58:27.000+01:00
diff --git a/packages/react-client/src/ReactFlightClient.js b/packages/react-client/src/ReactFlightClient.js
@@ -553,7 +553,8 @@ export function parseModelString(
             throw chunk.reason;
         }
       }
-      case 'U': {
+      case 'u': {
+        // matches "$undefined"
         // Special encoding for `undefined` which can't be serialized as JSON otherwise.
         return undefined;
       }
diff --git a/packages/react-server/src/ReactFlightServer.js b/packages/react-server/src/ReactFlightServer.js
@@ -535,7 +535,7 @@ function serializeProviderReference(name: string): string {
 }
 
 function serializeUndefined(): string {
-  return '$U';
+  return '$undefined';
 }
 
 function serializeClientReference(

Original file line number	Diff line number	Diff line change
`@@ -553,7 +553,8 @@ export function parseModelString(`
`553`	`553`	`throw chunk.reason;`
`554`	`554`	`}`
`555`	`555`	`}`
`556`		`- case 'U': {`
	`556`	`+ case 'u': {`
	`557`	`+ // matches "$undefined"`
`557`	`558`	// Special encoding for `undefined` which can't be serialized as JSON otherwise.
`558`	`559`	`return undefined;`
`559`	`560`	`}`
Original file line number	Diff line number	Diff line change
`@@ -535,7 +535,7 @@ function serializeProviderReference(name: string): string {`
`535`	`535`	`}`
`536`	`536`
`537`	`537`	`function serializeUndefined(): string {`
`538`		`- return '$U';`
	`538`	`+ return '$undefined';`
`539`	`539`	`}`
`540`	`540`
`541`	`541`	`function serializeClientReference(`