fix index of built-in encoders/decoders (close #241)

gfx · gfx · commit 3b62145392e7 · 2025-02-05T20:31:43.000+09:00
diff --git a/src/ExtensionCodec.ts b/src/ExtensionCodec.ts
@@ -57,7 +57,7 @@ export class ExtensionCodec<ContextType = undefined> implements ExtensionCodecTy
       this.decoders[type] = decode;
     } else {
       // built-in extensions
-      const index = 1 + type;
+      const index = -1 - type;
       this.builtInEncoders[index] = encode;
       this.builtInDecoders[index] = decode;
     }

Original file line number	Diff line number	Diff line change
`@@ -57,7 +57,7 @@ export class ExtensionCodec<ContextType = undefined> implements ExtensionCodecTy`
`57`	`57`	`this.decoders[type] = decode;`
`58`	`58`	`} else {`
`59`	`59`	`// built-in extensions`
`60`		`- const index = 1 + type;`
	`60`	`+ const index = -1 - type;`
`61`	`61`	`this.builtInEncoders[index] = encode;`
`62`	`62`	`this.builtInDecoders[index] = decode;`
`63`	`63`	`}`