Use typescript/native-preview

Author: jdalton

package.json

@@ -45,14 +45,14 @@
   },
   "scripts": {
     "build": "pnpm run clean:dist && run-p -c --aggregate-output build:* && run-p -c --aggregate-output build:clean:*",
-    "build:cjs": "dotenvx -q run -f .env.local -- tsc",
-    "build:esm": "dotenvx -q run -f .env.local -- tsc -p tsconfig.esm.json",
+    "build:cjs": "dotenvx -q run -f .env.local -- tsgo",
+    "build:esm": "dotenvx -q run -f .env.local -- tsgo -p tsconfig.esm.json",
     "build:clean:cjs": "dotenvx -q run -f .env.local -- node scripts/rename-dist-cjs-files.mjs",
     "build:clean:esm": "dotenvx -q run -f .env.local -- node scripts/rename-dist-esm-files.mjs",
     "check": "run-p -c --aggregate-output check:*",
     "check:lint": "dotenvx -q run -f .env.local -- eslint --report-unused-disable-directives .",
     "check:lint:fix": "pnpm run check:lint -- --fix",
-    "check:tsc": "dotenvx -q run -f .env.local -- tsc",
+    "check:tsc": "dotenvx -q run -f .env.local -- tsgo",
     "check-ci": "pnpm check:lint",
     "coverage": "run-s coverage:*",
     "coverage:test": "run-s test:prepare test:unit:coverage",
@@ -121,7 +121,7 @@
     "oxlint": "1.15.0",
     "taze": "19.6.0",
     "type-coverage": "2.29.7",
-    "typescript": "5.9.2",
+    "@typescript/native-preview": "7.0.0-dev.20250912.1",
     "typescript-eslint": "8.43.0",
     "vitest": "3.2.4"
   },

pnpm-lock.yaml

@@ -1,37 +1,36 @@
 {
   "compilerOptions": {
+    // The following options are not supported by @typescript/native-preview.
+    // They are either ignored or throw an unknown option error:
+    //"importsNotUsedAsValues": "remove",
+    //"incremental": true,
     "allowImportingTsExtensions": false,
     "allowJs": false,
     "composite": true,
     "declaration": true,
     "declarationMap": true,
     "erasableSyntaxOnly": true,
     "esModuleInterop": true,
+    "exactOptionalPropertyTypes": true,
     "forceConsistentCasingInFileNames": true,
-    "incremental": true,
     "isolatedModules": true,
     "lib": ["esnext"],
     "noEmitOnError": true,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitOverride": true,
+    "noPropertyAccessFromIndexSignature": true,
+    "noUncheckedIndexedAccess": true,
+    "noUncheckedSideEffectImports": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
     "resolveJsonModule": true,
-    "rootDir": "src",
+    "rewriteRelativeImportExtensions": true,
     "skipLibCheck": true,
     "sourceMap": true,
     "strict": true,
     "strictNullChecks": true,
     "target": "esnext",
     "useUnknownInCatchVariables": true,
-
-    /* New checks being tried out */
-    "exactOptionalPropertyTypes": true,
-    "noFallthroughCasesInSwitch": true,
-    "noImplicitOverride": true,
-    "noPropertyAccessFromIndexSignature": true,
-    "noUncheckedIndexedAccess": true,
-
-    /* Additional checks */
-    "importsNotUsedAsValues": "remove",
-    "noUnusedLocals": true,
-    "noUnusedParameters": true,
-    "noUncheckedSideEffectImports": true
+    "verbatimModuleSyntax": true
   }
 }

tsconfig.base.json

@@ -4,7 +4,8 @@
     "module": "commonjs",
     "moduleResolution": "node",
     "outDir": "dist/cjs",
-    "rootDir": "src"
+    "rootDir": "src",
+    "verbatimModuleSyntax": false
   },
   "include": ["src/*.ts"]
 }