enable erasableSyntaxOnly

Author: gfx

package-lock.json

@@ -83,7 +83,7 @@
     "ts-loader": "latest",
     "ts-node": "latest",
     "tsconfig-paths": "latest",
-    "typescript": "latest",
+    "typescript": "^5.8.0-beta",
     "webpack": "latest",
     "webpack-cli": "latest"
   },

package.json

@@ -16,11 +16,16 @@ export class CachedKeyDecoder implements KeyDecoder {
   hit = 0;
   miss = 0;
   private readonly caches: Array<Array<KeyCacheRecord>>;
+  private readonly maxKeyLength: number;
+  private readonly maxLengthPerKey: number;
 
   constructor(
-    readonly maxKeyLength = DEFAULT_MAX_KEY_LENGTH,
-    readonly maxLengthPerKey = DEFAULT_MAX_LENGTH_PER_KEY,
+    maxKeyLength = DEFAULT_MAX_KEY_LENGTH,
+    maxLengthPerKey = DEFAULT_MAX_LENGTH_PER_KEY,
   ) {
+    this.maxKeyLength = maxKeyLength;
+    this.maxLengthPerKey = maxLengthPerKey;
+
     // avoid `new Array(N)`, which makes a sparse array,
     // because a sparse array is typically slower than a non-sparse array.
     this.caches = [];

src/CachedKeyDecoder.ts

@@ -2,8 +2,14 @@
  * ExtData is used to handle Extension Types that are not registered to ExtensionCodec.
  */
 export class ExtData {
+  readonly type: number;
+  readonly data: Uint8Array;
+
   constructor(
-    readonly type: number,
-    readonly data: Uint8Array,
-  ) {}
+    type: number,
+    data: Uint8Array,
+  ) {
+    this.type = type;
+    this.data = data;
+  }
 }

src/ExtData.ts

@@ -54,7 +54,9 @@
     // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
     "esModuleInterop": true,                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
     // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
-    "forceConsistentCasingInFileNames": true
+    "forceConsistentCasingInFileNames": true,
+
+    "erasableSyntaxOnly": true
 
     /* Source Map Options */
     // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */