chore(tsconfig): extend canonical fleet base, lift extension-specific knobs

Restructures the concrete tsconfig.json to extend tsconfig.base.json
(was previously standalone) and consolidates the extension-only knobs:

- lib: ["DOM", "ES2024"] — WASM glue (Go runtime, acorn-wasm) needs DOM.
- declaration: true — extension ships .d.ts.
- allowSyntheticDefaultImports: true — VS Code API + WASM ergonomics.
- erasableSyntaxOnly: false — extension uses parameter properties /
  decorators that emit runtime code; erasable-only would forbid them.
- noEmit: false / noEmitOnError: false — VS Code extension emits.
- sourceMap: true — extension host debugger needs source maps.

The 7 other strict flags previously kept lax (noUnusedLocals,
noUnusedParameters, noPropertyAccessFromIndexSignature,
noUncheckedIndexedAccess, verbatimModuleSyntax, exactOptionalPropertyTypes)
now flow through from the fleet-canonical base.

Also narrows the build tsconfig include to ../src/**/*.ts so it doesn't
sweep .config/ tooling sources, switches moduleResolution to bundler to
silence deprecation warnings, removes the verbatimModuleSyntax: false
override from tsconfig.check.json, and updates .gitignore to cover the
.config/**/*.d.mts emit byproducts.

Author: jdalton

.config/tsconfig.check.json

@@ -1,14 +1,18 @@
 {
   "extends": "./tsconfig.base.json",
   "compilerOptions": {
-    "declarationMap": false,
+    // DOM is needed for the WebAssembly globals used by the bundled
+    // WASM glue (Go runtime, acorn-wasm).
+    "lib": ["DOM", "ES2024"],
+    // VS Code extension uses parameter properties / decorators / etc.
+    // that emit runtime code — erasable-only would forbid them.
+    "erasableSyntaxOnly": false,
     "module": "esnext",
     "moduleResolution": "bundler",
     "noEmit": true,
     "skipLibCheck": true,
     "sourceMap": false,
-    "types": ["node", "vscode"],
-    "verbatimModuleSyntax": false
+    "types": ["node", "vscode"]
   },
   "include": ["../src/**/*.ts", "../test/**/*.mts"],
   "exclude": ["**/.cache/**", "**/node_modules/**/*", "**/vendor/**/*"]

.config/tsconfig.json

@@ -1,23 +1,36 @@
 {
+  "extends": "./tsconfig.base.json",
   "compilerOptions": {
+    // DOM is needed for the WebAssembly globals used by the bundled
+    // WASM glue (Go runtime, acorn-wasm).
+    "lib": ["DOM", "ES2024"],
+    // VS Code extension is published with a CommonJS entrypoint
+    // (main = ./out/main.js) and consumed by Node, so we emit JS and
+    // .d.ts here. The check-only tsconfig (tsconfig.check.json) keeps
+    // noEmit on.
     "module": "ESNext",
-    "moduleResolution": "node",
-    "target": "esnext",
-    // DOM needed for WASM unfortunately
-    "lib": ["dom", "esnext"],
+    "moduleResolution": "bundler",
     "outDir": "../out",
-    "sourceMap": true,
     "rootDir": "../src",
-    "skipLibCheck": true,
-    "esModuleInterop": true,
     "types": ["node", "vscode"],
-    /* Strict Type-Checking Option */
-    "strict": true /* enable all strict type-checking options */,
-    /* Additional Checks */
-    "noUnusedLocals": true /* Report errors on unused locals. */
+    // Extension ships its own type declarations.
+    "declaration": true,
+    // Synthetic default imports keep VS Code API + WASM glue ergonomic.
+    "allowSyntheticDefaultImports": true,
+    // VS Code extension uses parameter properties / decorators / etc.
+    // that emit runtime code — erasable-only would forbid them.
+    "erasableSyntaxOnly": false,
+    // Emit JS for the bundler/loader to consume.
+    "noEmit": false,
+    // Emit even when type errors exist so a single warning doesn't kill
+    // a development cycle — CI gates on tsconfig.check.json separately.
+    "noEmitOnError": false,
+    // Source maps useful for the extension host debugger.
+    "sourceMap": true
   },
   "typeAcquisition": {
     "enable": true
   },
+  "include": ["../src/**/*.ts"],
   "exclude": ["../node_modules"]
 }

.gitignore

@@ -8,7 +8,10 @@ node_modules/
 # Local transpiled output of jsPlugin/config .mts sources.
 .config/oxlint-plugin/**/*.mjs
 .config/oxlint-plugin/**/*.mjs.map
+.config/oxlint-plugin/**/*.d.mts
 .config/rolldown/**/*.mjs
 .config/rolldown/**/*.mjs.map
+.config/rolldown/**/*.d.mts
 .config/*.mjs
 .config/*.mjs.map
+.config/*.d.mts