diff --git a/demos/react-jsnation-workshop/src/components/steps/Step5.tsx b/demos/react-jsnation-workshop/src/components/steps/Step5.tsx
index 70f137f5..c8b0187a 100644
--- a/demos/react-jsnation-workshop/src/components/steps/Step5.tsx
+++ b/demos/react-jsnation-workshop/src/components/steps/Step5.tsx
@@ -158,12 +158,12 @@ function Profile({ user }: { user: LocalUser | undefined }): JSX.Element {
 }
 
 class LocalUser {
-  #id: number;
+  readonly id: number;
   #resource: InvalidatableAsync<ApiUser>;
   #invalidate: Marker;
 
   constructor(id: number, data: InvalidatableAsync<ApiUser>, marker: Marker) {
-    this.#id = id;
+    this.id = id;
     this.#resource = data;
     this.#invalidate = marker;
   }
diff --git a/demos/react-jsnation-workshop/src/components/steps/Step6.tsx b/demos/react-jsnation-workshop/src/components/steps/Step6.tsx
index 2a7c5565..205778a2 100644
--- a/demos/react-jsnation-workshop/src/components/steps/Step6.tsx
+++ b/demos/react-jsnation-workshop/src/components/steps/Step6.tsx
@@ -173,12 +173,12 @@ function Profile({ user }: { user: LocalUser | undefined }): JSX.Element {
 }
 
 class LocalUser {
-  #id: number;
+  readonly id: number;
   #resource: InvalidatableAsync<ApiUser>;
   #invalidate: Marker;
 
   constructor(id: number, data: InvalidatableAsync<ApiUser>, marker: Marker) {
-    this.#id = id;
+    this.id = id;
     this.#resource = data;
     this.#invalidate = marker;
   }
diff --git a/demos/react-jsnation/.eslintrc.json b/demos/react-jsnation/.eslintrc.json
index 11124447..9fb0c333 100644
--- a/demos/react-jsnation/.eslintrc.json
+++ b/demos/react-jsnation/.eslintrc.json
@@ -1,5 +1,6 @@
 {
   "root": true,
+  "ignorePatterns": ["node_modules", "dist", "html", "tests"],
   "plugins": ["@starbeam"],
   "overrides": [
     {
diff --git a/demos/react-jsnation/tests/.eslintrc.json b/demos/react-jsnation/tests/.eslintrc.json
index 8c8bce75..b0b22424 100644
--- a/demos/react-jsnation/tests/.eslintrc.json
+++ b/demos/react-jsnation/tests/.eslintrc.json
@@ -5,7 +5,7 @@
   "overrides": [
     {
       "extends": ["plugin:@starbeam/loose"],
-      "files": ["**/*.ts"],
+      "files": ["**/*.{tsx,ts}"],
       "parserOptions": {
         "project": "tsconfig.json"
       }
diff --git a/demos/react-jsnation/tests/package.json b/demos/react-jsnation/tests/package.json
index 51b517c6..54dd7fde 100644
--- a/demos/react-jsnation/tests/package.json
+++ b/demos/react-jsnation/tests/package.json
@@ -5,7 +5,7 @@
   "type": "module",
   "starbeam": {
     "jsx": "react",
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/demos/react-stock-ticker/src/components/Header.tsx b/demos/react-stock-ticker/src/components/Header.tsx
index 17290464..93c5bb19 100644
--- a/demos/react-stock-ticker/src/components/Header.tsx
+++ b/demos/react-stock-ticker/src/components/Header.tsx
@@ -21,7 +21,7 @@ export default function Header(): JSX.Element {
       event.preventDefault();
 
       const { search } = Object.fromEntries(
-        new FormData(event.currentTarget)
+        new FormData(event.currentTarget),
       ) as {
         search: string;
       };
@@ -86,6 +86,6 @@ export default function Header(): JSX.Element {
         </div>
       </header>
     ),
-    []
+    [],
   );
 }
diff --git a/packages/preact/preact-testing-utils/package.json b/packages/preact/preact-testing-utils/package.json
index 26bdd32f..b67441f4 100644
--- a/packages/preact/preact-testing-utils/package.json
+++ b/packages/preact/preact-testing-utils/package.json
@@ -14,7 +14,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:test-support",
+  "starbeam": {
+    "type": "library:test-support"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/preact/preact-testing-utils/tests/package.json b/packages/preact/preact-testing-utils/tests/package.json
index 75e78ab8..b770a25b 100644
--- a/packages/preact/preact-testing-utils/tests/package.json
+++ b/packages/preact/preact-testing-utils/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/preact/preact-utils/package.json b/packages/preact/preact-utils/package.json
index 29717cbf..fcc3c8f6 100644
--- a/packages/preact/preact-utils/package.json
+++ b/packages/preact/preact-utils/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/preact/preact-utils/src/plugin.ts b/packages/preact/preact-utils/src/plugin.ts
index c53a30bf..a2ea28dd 100644
--- a/packages/preact/preact-utils/src/plugin.ts
+++ b/packages/preact/preact-utils/src/plugin.ts
@@ -266,12 +266,10 @@ class AugmentHandler<F extends AnyFn> implements Handler {
     }
   }
 
-  #name: string;
   #handled = false;
   #original: F;
 
-  private constructor(name: string, original: F) {
-    this.#name = name;
+  private constructor(_name: string, original: F) {
     this.#original = original;
   }
 
diff --git a/packages/preact/preact-utils/tests/package.json b/packages/preact/preact-utils/tests/package.json
index 8c8a2404..d1d7e55b 100644
--- a/packages/preact/preact-utils/tests/package.json
+++ b/packages/preact/preact-utils/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/preact/preact/tests/package.json b/packages/preact/preact/tests/package.json
index a5ba1690..d04af563 100644
--- a/packages/preact/preact/tests/package.json
+++ b/packages/preact/preact/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/react/react/tests/package.json b/packages/react/react/tests/package.json
index b8c60c57..72be6938 100644
--- a/packages/react/react/tests/package.json
+++ b/packages/react/react/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/react/test-utils/package.json b/packages/react/test-utils/package.json
index ce6c29cf..815eb2a1 100644
--- a/packages/react/test-utils/package.json
+++ b/packages/react/test-utils/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:test-support",
+  "starbeam": {
+    "type": "library:test-support"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:types": "tsc -b"
diff --git a/packages/react/test-utils/src/modes.ts b/packages/react/test-utils/src/modes.ts
index 47ab22e5..fda3cb4d 100644
--- a/packages/react/test-utils/src/modes.ts
+++ b/packages/react/test-utils/src/modes.ts
@@ -202,6 +202,7 @@ export class SetupTestRoot<Props, T> {
 
       if (lastChecked === undefined || current === undefined) {
         if (lastChecked !== current) {
+          // eslint-disable-next-line no-console
           console.error("Expected current value to equal last checked value", {
             lastChecked,
             current,
diff --git a/packages/react/use-strict-lifecycle/package.json b/packages/react/use-strict-lifecycle/package.json
index 9869abf0..50c14a09 100644
--- a/packages/react/use-strict-lifecycle/package.json
+++ b/packages/react/use-strict-lifecycle/package.json
@@ -19,7 +19,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "doc": "node ./scripts/doc.js",
     "doc:all": "node ./scripts/docs.js",
diff --git a/packages/react/use-strict-lifecycle/tests/package.json b/packages/react/use-strict-lifecycle/tests/package.json
index 4bb07a40..966f81d9 100644
--- a/packages/react/use-strict-lifecycle/tests/package.json
+++ b/packages/react/use-strict-lifecycle/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/collections/package.json b/packages/universal/collections/package.json
index f5a13678..18abe0fb 100644
--- a/packages/universal/collections/package.json
+++ b/packages/universal/collections/package.json
@@ -19,7 +19,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/collections/tests/package.json b/packages/universal/collections/tests/package.json
index 03e0eb8c..f3f69595 100644
--- a/packages/universal/collections/tests/package.json
+++ b/packages/universal/collections/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/core-utils/package.json b/packages/universal/core-utils/package.json
index ec753799..2b902e84 100644
--- a/packages/universal/core-utils/package.json
+++ b/packages/universal/core-utils/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/core-utils/tests/package.json b/packages/universal/core-utils/tests/package.json
index 8b121728..c595b140 100644
--- a/packages/universal/core-utils/tests/package.json
+++ b/packages/universal/core-utils/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/core/index.ts b/packages/universal/core/index.ts
index 776715ce..4385c715 100644
--- a/packages/universal/core/index.ts
+++ b/packages/universal/core/index.ts
@@ -1,4 +1,5 @@
+// eslint-disable-next-line no-console
 console.warn(
-  "WARNING: @starbeam/core has been renamed to @starbeam/universal. Please update your imports to refer to @starbeam/universal."
+  "WARNING: @starbeam/core has been renamed to @starbeam/universal. Please update your imports to refer to @starbeam/universal.",
 );
 export * from "@starbeam/universal";
diff --git a/packages/universal/debug/src/logger.ts b/packages/universal/debug/src/logger.ts
new file mode 100644
index 00000000..3c864614
--- /dev/null
+++ b/packages/universal/debug/src/logger.ts
@@ -0,0 +1,34 @@
+/**
+ * This API might gain additional features. For now, its primary purpose is to provide a
+ * sanctioned way to log to the console that is overtly different from explicit
+ * calls to `console.log` (which make it more difficult to identify errant console.logs).
+ */
+export class Logger {
+  static console(): Logger {
+    return new Logger(console);
+  }
+
+  static of(logger: typeof console): Logger {
+    return new Logger(logger);
+  }
+
+  #logger: typeof console;
+
+  private constructor(logger: typeof console) {
+    this.#logger = logger;
+  }
+
+  group(...args: unknown[]): void {
+    this.#logger.group(...args);
+  }
+
+  groupEnd(): void {
+    this.#logger.groupEnd();
+  }
+
+  info(...args: unknown[]): void {
+    this.#logger.info(...args);
+  }
+}
+
+export const LOGGER = Logger.console();
diff --git a/packages/universal/debug/src/tag.ts b/packages/universal/debug/src/tag.ts
index 2b0f09bb..33b97b94 100644
--- a/packages/universal/debug/src/tag.ts
+++ b/packages/universal/debug/src/tag.ts
@@ -3,19 +3,20 @@ import type { Description, HasTag } from "@starbeam/interfaces";
 import { DEBUG, UNKNOWN_REACTIVE_VALUE } from "@starbeam/reactive";
 import { getDependencies, getTag, lastUpdated } from "@starbeam/tags";
 
+import { LOGGER } from "./logger.js";
 import { Tree } from "./tree.js";
 
 export const debugReactive = (
   tag: HasTag,
   {
     implementation = false,
-  }: { implementation?: boolean; source?: boolean; id?: boolean } = {}
+  }: { implementation?: boolean; source?: boolean; id?: boolean } = {},
 ): string => {
   const dependencies = getDependencies(tag);
   const descriptions = new Set(
     dependencies.map((dependency) =>
-      getDesc(dependency.description, implementation)
-    )
+      getDesc(dependency.description, implementation),
+    ),
   );
 
   const nodes = [...descriptions]
@@ -35,29 +36,31 @@ export const logReactive = (
     implementation?: boolean;
     source?: boolean;
     id?: boolean;
-  } = {}
+  } = {},
 ): void => {
   const debug = debugReactive(tag, options);
 
   if (options.label) {
-    console.group(options.label);
+    LOGGER.group(options.label);
   }
 
-  console.group(
-    describe(getTag(tag).description, { id: options.id }),
-    `(updated at ${lastUpdated(tag).at})`
-  );
-  console.info(debug);
-  console.groupEnd();
+  {
+    LOGGER.group(
+      describe(getTag(tag).description, { id: options.id }),
+      `(updated at ${lastUpdated(tag).at})`,
+    );
+    LOGGER.info(debug);
+    LOGGER.groupEnd();
+  }
 
   if (options.label) {
-    console.groupEnd();
+    LOGGER.groupEnd();
   }
 };
 
 function describe(
   description: Description | undefined,
-  options?: { id: boolean | undefined }
+  options?: { id: boolean | undefined },
 ): string {
   return description && DEBUG
     ? DEBUG.describe(description, options)
@@ -66,7 +69,7 @@ function describe(
 
 function getDesc(
   description: Description | undefined,
-  showImplementation: boolean
+  showImplementation: boolean,
 ): Description | undefined {
   return showImplementation ? description : DEBUG?.getUserFacing(description);
 }
diff --git a/packages/universal/debug/tests/package.json b/packages/universal/debug/tests/package.json
index bec8e1b9..88060f57 100644
--- a/packages/universal/debug/tests/package.json
+++ b/packages/universal/debug/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/modifier/package.json b/packages/universal/modifier/package.json
index fa46878b..9df0f51f 100644
--- a/packages/universal/modifier/package.json
+++ b/packages/universal/modifier/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:types": "tsc -b"
diff --git a/packages/universal/reactive/package.json b/packages/universal/reactive/package.json
index 3032aab9..608b53ec 100644
--- a/packages/universal/reactive/package.json
+++ b/packages/universal/reactive/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/reactive/tests/package.json b/packages/universal/reactive/tests/package.json
index e9ccfe5f..194e0eed 100644
--- a/packages/universal/reactive/tests/package.json
+++ b/packages/universal/reactive/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/renderer/package.json b/packages/universal/renderer/package.json
index 9792e260..729927d1 100644
--- a/packages/universal/renderer/package.json
+++ b/packages/universal/renderer/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/renderer/src/renderer.ts b/packages/universal/renderer/src/renderer.ts
index 30a8d332..47a30259 100644
--- a/packages/universal/renderer/src/renderer.ts
+++ b/packages/universal/renderer/src/renderer.ts
@@ -115,13 +115,9 @@ export function managerSetupReactive<T, M extends SomeRendererManager>(
   manager: M,
   blueprint: UseReactive<T>,
 ): Reactive<ReadValue<T>> {
-  console.log(1);
   const component = manager.getComponent() as object;
-  console.log(2);
   const lifecycle = new LifecycleImpl(manager, component);
-  console.log(3);
   const currentBlueprint = manager.setupRef(component, blueprint);
-  console.log(4);
   return manager.setupValue(component, () =>
     setupFormula(currentBlueprint, lifecycle),
   );
diff --git a/packages/universal/renderer/tests/package.json b/packages/universal/renderer/tests/package.json
index 77e1d5de..b1c69ddd 100644
--- a/packages/universal/renderer/tests/package.json
+++ b/packages/universal/renderer/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/resource/package.json b/packages/universal/resource/package.json
index 5aa49f24..71272d71 100644
--- a/packages/universal/resource/package.json
+++ b/packages/universal/resource/package.json
@@ -17,7 +17,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/resource/tests/package.json b/packages/universal/resource/tests/package.json
index b7ed2311..cc6b3e16 100644
--- a/packages/universal/resource/tests/package.json
+++ b/packages/universal/resource/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/resource/tests/sync.spec.ts b/packages/universal/resource/tests/sync.spec.ts
index 3e00a80c..c6adb547 100644
--- a/packages/universal/resource/tests/sync.spec.ts
+++ b/packages/universal/resource/tests/sync.spec.ts
@@ -457,19 +457,12 @@ const isInitialized = isNotEqual(UNINITIALIZED);
 type Change<U> = (prev: U) => U;
 
 class Child<T, U> {
-  readonly #events: RecordedEvents;
   readonly #sequence: number;
   readonly #value: T;
   #lastValue: U | UNINITIALIZED = UNINITIALIZED;
   #extract: (value: T) => U;
 
-  constructor(
-    events: RecordedEvents,
-    sequence: number,
-    value: T,
-    extract: (value: T) => U,
-  ) {
-    this.#events = events;
+  constructor(sequence: number, value: T, extract: (value: T) => U) {
     this.#sequence = sequence;
     this.#value = value;
     this.#extract = extract;
@@ -531,9 +524,7 @@ class Children<T, U> implements Iterable<Child<T, U>> {
 
   constructor(events: RecordedEvents, children: T[], extract: (value: T) => U) {
     this.#events = events;
-    this.#children = children.map(
-      (child, i) => new Child(events, i, child, extract),
-    );
+    this.#children = children.map((child, i) => new Child(i, child, extract));
   }
 
   expect(
diff --git a/packages/universal/runtime/package.json b/packages/universal/runtime/package.json
index f3f60880..3ba02863 100644
--- a/packages/universal/runtime/package.json
+++ b/packages/universal/runtime/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/runtime/src/lifetime/api.ts b/packages/universal/runtime/src/lifetime/api.ts
index f9a4da12..66434ca0 100644
--- a/packages/universal/runtime/src/lifetime/api.ts
+++ b/packages/universal/runtime/src/lifetime/api.ts
@@ -4,7 +4,7 @@ import {
   onFinalize,
 } from "@starbeam/shared";
 
-import { ObjectLifetime, type Unsubscribe } from "./object-lifetime.js";
+import type { ObjectLifetime, Unsubscribe } from "./object-lifetime.js";
 
 class LifetimeAPI {
   readonly #associations = new WeakMap<object, ObjectLifetime>();
@@ -14,15 +14,6 @@ class LifetimeAPI {
       if (!handler) return;
 
       onFinalize(object, handler);
-
-      // let lifetime = this.#associations.get(object);
-
-      // if (!lifetime) {
-      //   lifetime = ObjectLifetime.create(object);
-      //   this.#associations.set(object, lifetime);
-      // }
-
-      // return lifetime.on.finalize(handler);
     },
   };
 
@@ -34,17 +25,6 @@ class LifetimeAPI {
     finalize(object);
   }
 
-  #initialize(object: object): ObjectLifetime {
-    let lifetime = this.#associations.get(object);
-
-    if (!lifetime) {
-      lifetime = ObjectLifetime.create(object);
-      this.#associations.set(object, lifetime);
-    }
-
-    return lifetime;
-  }
-
   link(parent: object, child: object): Unsubscribe {
     return linkToFinalizationScope(child, parent);
   }
diff --git a/packages/universal/runtime/tests/package.json b/packages/universal/runtime/tests/package.json
index e3d1df53..bab02cf6 100644
--- a/packages/universal/runtime/tests/package.json
+++ b/packages/universal/runtime/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/service/package.json b/packages/universal/service/package.json
index 4e5dff5a..a6536932 100644
--- a/packages/universal/service/package.json
+++ b/packages/universal/service/package.json
@@ -17,7 +17,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/service/tests/package.json b/packages/universal/service/tests/package.json
index 9630b3b4..eeb66648 100644
--- a/packages/universal/service/tests/package.json
+++ b/packages/universal/service/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/shared/package.json b/packages/universal/shared/package.json
index eae8137d..b1cd081b 100644
--- a/packages/universal/shared/package.json
+++ b/packages/universal/shared/package.json
@@ -19,7 +19,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/shared/src/lifetimes.ts b/packages/universal/shared/src/lifetimes.ts
index 1388e193..1cb21d74 100644
--- a/packages/universal/shared/src/lifetimes.ts
+++ b/packages/universal/shared/src/lifetimes.ts
@@ -13,15 +13,10 @@ let id = 0;
 
 if (!lifetime) {
   class LifetimeState {
-    readonly #object: WeakRef<object>;
     readonly #finalizers = new Set<() => void>();
     readonly children = new Set<LifetimeState>();
     #finalized = false;
 
-    constructor(object: object) {
-      this.#object = new WeakRef(object);
-    }
-
     add(finalizer: () => void) {
       this.#finalizers.add(finalizer);
     }
@@ -164,7 +159,7 @@ if (!lifetime) {
       let state = this.#lifetimes.get(object);
 
       if (!state) {
-        state = new LifetimeState(object);
+        state = new LifetimeState();
         this.#lifetimes.set(object, state);
         registry.register(object, state);
       }
diff --git a/packages/universal/shared/tests/package.json b/packages/universal/shared/tests/package.json
index 49fb96bc..d0da5289 100644
--- a/packages/universal/shared/tests/package.json
+++ b/packages/universal/shared/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/tags/package.json b/packages/universal/tags/package.json
index 645f6be2..182e9ed7 100644
--- a/packages/universal/tags/package.json
+++ b/packages/universal/tags/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:types": "tsc -b"
diff --git a/packages/universal/universal/package.json b/packages/universal/universal/package.json
index e75a87b9..44ba35ec 100644
--- a/packages/universal/universal/package.json
+++ b/packages/universal/universal/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/universal/tests/package.json b/packages/universal/universal/tests/package.json
index 9b39d2a1..80d8c6b4 100644
--- a/packages/universal/universal/tests/package.json
+++ b/packages/universal/universal/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/universal/verify/package.json b/packages/universal/verify/package.json
index 07103a62..1429fcd0 100644
--- a/packages/universal/verify/package.json
+++ b/packages/universal/verify/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/universal/verify/tests/package.json b/packages/universal/verify/tests/package.json
index 0b229c14..b562fcd9 100644
--- a/packages/universal/verify/tests/package.json
+++ b/packages/universal/verify/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/vue/vue-testing-utils/package.json b/packages/vue/vue-testing-utils/package.json
index 92100c9d..660b97d2 100644
--- a/packages/vue/vue-testing-utils/package.json
+++ b/packages/vue/vue-testing-utils/package.json
@@ -14,7 +14,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:test-support",
+  "starbeam": {
+    "type": "library:test-support"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/vue/vue-testing-utils/tests/package.json b/packages/vue/vue-testing-utils/tests/package.json
index c36726c2..9f893bfd 100644
--- a/packages/vue/vue-testing-utils/tests/package.json
+++ b/packages/vue/vue-testing-utils/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/vue/vue/tests/package.json b/packages/vue/vue/tests/package.json
index 88c8517f..dc487df1 100644
--- a/packages/vue/vue/tests/package.json
+++ b/packages/vue/vue/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/x/devtool/src/log/describe.tsx b/packages/x/devtool/src/log/describe.tsx
index 2e251eff..ee931acd 100644
--- a/packages/x/devtool/src/log/describe.tsx
+++ b/packages/x/devtool/src/log/describe.tsx
@@ -1,3 +1,4 @@
+/* eslint-disable no-console */
 /* eslint-disable @typescript-eslint/no-unsafe-call */
 /* eslint-disable @typescript-eslint/no-unsafe-member-access */
 /* eslint-disable @typescript-eslint/no-unsafe-assignment */
diff --git a/packages/x/devtool/src/log/frame.tsx b/packages/x/devtool/src/log/frame.tsx
index 4c3f98cd..5d5a4998 100644
--- a/packages/x/devtool/src/log/frame.tsx
+++ b/packages/x/devtool/src/log/frame.tsx
@@ -1,3 +1,4 @@
+/* eslint-disable no-console */
 /* eslint-disable @typescript-eslint/no-unsafe-member-access */
 /* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
diff --git a/packages/x/headless-form/package.json b/packages/x/headless-form/package.json
index 7ee834f2..b186994f 100644
--- a/packages/x/headless-form/package.json
+++ b/packages/x/headless-form/package.json
@@ -20,7 +20,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:types": "tsc -b"
diff --git a/packages/x/store/package.json b/packages/x/store/package.json
index 872067b2..d40ae5da 100644
--- a/packages/x/store/package.json
+++ b/packages/x/store/package.json
@@ -19,7 +19,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/x/store/src/flat.ts b/packages/x/store/src/flat.ts
index a232d236..4d568cb8 100644
--- a/packages/x/store/src/flat.ts
+++ b/packages/x/store/src/flat.ts
@@ -27,7 +27,7 @@ export abstract class FlatRows<U extends UserTypes>
   }
 
   groupBy<Bucket, Description>(
-    groupBy: Grouping<U, Bucket, Description>
+    groupBy: Grouping<U, Bucket, Description>,
   ): GroupBy<U, Bucket, Description> {
     return GroupBy.create<U, Bucket, Description>(this, groupBy);
   }
@@ -46,13 +46,13 @@ export abstract class FlatRows<U extends UserTypes>
  */
 
 type Grouping<U extends UserTypes, Bucket, Description> = (
-  row: TableTypesFor<U>["Row"]
+  row: TableTypesFor<U>["Row"],
 ) => { bucket: Bucket; as?: Description };
 
 export class Group<T extends TableTypes> extends FlatRows<T> {
   static empty<T extends TableTypes>(
     grouping: unknown,
-    description: unknown
+    description: unknown,
   ): Group<T> {
     return new Group(grouping, description, []);
   }
@@ -61,15 +61,11 @@ export class Group<T extends TableTypes> extends FlatRows<T> {
     group.#rows.push(row);
   }
 
-  readonly #grouping: unknown;
-  readonly #description: unknown;
   readonly #rows: T["Row"][];
 
   constructor(grouping: unknown, description: unknown, rows: T["Row"][]) {
     super();
     this.#rows = rows;
-    this.#grouping = grouping;
-    this.#description = description;
   }
 
   get rows(): readonly T["Row"][] {
@@ -86,7 +82,7 @@ export class Groups<T extends TableTypes, Description> {
     groups: Groups<T, Description>,
     bucket: Bucket,
     description: Description,
-    row: T["Row"]
+    row: T["Row"],
   ): void {
     let group = groups.#map.get(description);
 
@@ -116,7 +112,7 @@ export class Groups<T extends TableTypes, Description> {
 export class GroupBy<U extends UserTypes, Bucket, Description> {
   static create<U extends UserTypes, Bucket, Description>(
     rows: FlatRows<U>,
-    groupBy: Grouping<TableTypesFor<U>, Bucket, Description>
+    groupBy: Grouping<TableTypesFor<U>, Bucket, Description>,
   ): GroupBy<U, Bucket, Description> {
     return new GroupBy(rows, groupBy);
   }
@@ -126,7 +122,7 @@ export class GroupBy<U extends UserTypes, Bucket, Description> {
 
   constructor(
     rows: FlatRows<U>,
-    groupBy: Grouping<TableTypesFor<U>, Bucket, Description>
+    groupBy: Grouping<TableTypesFor<U>, Bucket, Description>,
   ) {
     this.#rows = rows;
     this.#groupBy = groupBy;
@@ -152,11 +148,11 @@ type Dict = Record<string, unknown>;
 
 export class AggregateBy<
   U extends UserTypes,
-  A extends AggregatorFor<TableTypesFor<U>>
+  A extends AggregatorFor<TableTypesFor<U>>,
 > {
   static create<U extends UserTypes, A extends AggregatorFor<TableTypesFor<U>>>(
     rows: FlatRows<U>,
-    aggregateBy: A
+    aggregateBy: A,
   ): AggregateBy<U, A> {
     return new AggregateBy(rows, aggregateBy);
   }
@@ -174,10 +170,10 @@ export class AggregateBy<
       Object.entries(this.#aggregateBy).map((entry) => {
         const [key, aggregator] = entry as [
           string,
-          { initialize: () => AggregatorInstance<unknown, unknown> }
+          { initialize: () => AggregatorInstance<unknown, unknown> },
         ];
         return [key, aggregator.initialize()];
-      })
+      }),
     ) as Record<string, AggregatorInstance<unknown, unknown>>;
 
     for (const row of this.#rows.rows) {
@@ -190,7 +186,7 @@ export class AggregateBy<
       Object.entries(aggregators).map(([key, aggregator]) => [
         key,
         aggregator.value(),
-      ])
+      ]),
     ) as unknown as AggregateRow<TableTypesFor<U>, A>[];
 
     return {
@@ -212,7 +208,7 @@ export class Query<U extends UserTypes> extends FlatRows<U> {
   constructor(
     rows: FlatRows<U>,
     filter: FilterInstance<U>,
-    sort: SortFn<U> | undefined
+    sort: SortFn<U> | undefined,
   ) {
     super();
     this.#rows = rows;
@@ -254,5 +250,5 @@ export interface Sort<T extends TableTypes> {
 
 export type SortFn<U extends UserTypes> = (
   a: TableTypesFor<U>["Row"],
-  b: TableTypesFor<U>["Row"]
+  b: TableTypesFor<U>["Row"],
 ) => number;
diff --git a/packages/x/store/src/table.ts b/packages/x/store/src/table.ts
index 2ac9ac34..c1c48802 100644
--- a/packages/x/store/src/table.ts
+++ b/packages/x/store/src/table.ts
@@ -11,7 +11,7 @@ const SINGLE_ELEMENT = 1;
 export class Table<U extends UserTypes> extends FlatRows<U> {
   static create<S extends SpecifiedTableDefinition>(
     this: void,
-    definition: S
+    definition: S,
   ): Table<{
     Columns: ReturnType<S["model"]>["row"];
     Row: ReturnType<S["model"]>;
@@ -21,7 +21,7 @@ export class Table<U extends UserTypes> extends FlatRows<U> {
     definition: {
       columns: (keyof C)[];
       name?: string;
-    }
+    },
   ): Table<C>;
   static create(
     this: void,
@@ -29,12 +29,12 @@ export class Table<U extends UserTypes> extends FlatRows<U> {
       columns: (keyof object)[];
       model?: Model<TableTypes>;
       name?: string;
-    }
+    },
   ): Table<TableTypes> {
     const description = DEBUG?.Desc(
       "collection",
       definition.name ?? definition.model?.name,
-      "Table.create"
+      "Table.create",
     );
 
     return new Table<TableTypes>(
@@ -43,23 +43,21 @@ export class Table<U extends UserTypes> extends FlatRows<U> {
         model:
           definition.model ?? ((id: string, data: object) => ({ id, ...data })),
       },
-      description
+      description,
     );
   }
 
   #id = INITIAL_ID;
   readonly #definition: TableDefinition<TableTypesFor<U>>;
   readonly #rows: Map<string, TableTypesFor<U>["Row"]>;
-  readonly #description: Description | undefined;
 
   private constructor(
     definition: TableDefinition<TableTypesFor<U>>,
-    description: Description | undefined
+    description: Description | undefined,
   ) {
     super();
     this.#rows = reactive.Map(description);
     this.#definition = definition;
-    this.#description = description;
   }
 
   get columns(): ColumnName<TableTypesFor<U>["Columns"]>[] {
@@ -71,7 +69,7 @@ export class Table<U extends UserTypes> extends FlatRows<U> {
   }
 
   append(
-    row: TableTypesFor<U>["Columns"] & { id?: string }
+    row: TableTypesFor<U>["Columns"] & { id?: string },
   ): TableTypesFor<U>["Row"];
   append(...rows: (TableTypesFor<U>["Columns"] & { id?: string })[]): void;
   append(
@@ -101,7 +99,7 @@ type ColumnName<C> = keyof C;
 
 export type Model<T extends TableTypes> = (
   id: string,
-  columns: T["Columns"]
+  columns: T["Columns"],
 ) => T["Row"];
 
 export type UserTypes = object | TableTypes;
diff --git a/packages/x/store/tests/package.json b/packages/x/store/tests/package.json
index 9cd33f25..13f15dd6 100644
--- a/packages/x/store/tests/package.json
+++ b/packages/x/store/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/packages/x/vanilla/package.json b/packages/x/vanilla/package.json
index 98a41002..9f606a08 100644
--- a/packages/x/vanilla/package.json
+++ b/packages/x/vanilla/package.json
@@ -19,7 +19,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:public",
+  "starbeam": {
+    "type": "library:public"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:specs": "vitest --run",
diff --git a/packages/x/vanilla/tests/package.json b/packages/x/vanilla/tests/package.json
index 8078d47a..f053ea1f 100644
--- a/packages/x/vanilla/tests/package.json
+++ b/packages/x/vanilla/tests/package.json
@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "type": "module",
   "starbeam": {
-    "source": "ts",
+    "source": "tsx",
     "type": "tests"
   },
   "scripts": {
diff --git a/workspace/eslint/src/base.js b/workspace/eslint/src/base.js
index e0721fcd..ed4c7087 100644
--- a/workspace/eslint/src/base.js
+++ b/workspace/eslint/src/base.js
@@ -136,6 +136,7 @@ const TYPED_RULES = Rules.build((rules) =>
 /** @type {Linter.RulesRecord} */
 exports.rules = {
   ...TYPED_RULES,
+  "no-console": "error",
   "eslint-comments/no-unused-disable": "error",
   "eslint-comments/require-description": [
     "off", // enable in a subsequent PR
diff --git a/workspace/eslint/src/demos.js b/workspace/eslint/src/demos.js
index cf19dace..fd7419b2 100644
--- a/workspace/eslint/src/demos.js
+++ b/workspace/eslint/src/demos.js
@@ -2,4 +2,6 @@
 const { Linter } = require("eslint");
 
 /** @type {Linter.RulesRecord} */
-exports.rules = {};
+exports.rules = {
+  "no-console": "off",
+};
diff --git a/workspace/misc/src/verbose-knip-reporter.ts b/workspace/misc/src/verbose-knip-reporter.ts
index 0b01cf7a..b8178fb8 100644
--- a/workspace/misc/src/verbose-knip-reporter.ts
+++ b/workspace/misc/src/verbose-knip-reporter.ts
@@ -1,3 +1,4 @@
+/* eslint-disable no-console */
 import type { ReporterOptions } from "knip";
 
 type Reporter = (options: ReporterOptions) => Promise<void>;
diff --git a/workspace/package/src/unions.ts b/workspace/package/src/unions.ts
index 1d721f82..fff7b333 100644
--- a/workspace/package/src/unions.ts
+++ b/workspace/package/src/unions.ts
@@ -1,4 +1,9 @@
-import { getFirst, isSingleItemArray, stringify } from "@starbeam/core-utils";
+import {
+  DisplayStruct,
+  getFirst,
+  isSingleItemArray,
+  stringify,
+} from "@starbeam/core-utils";
 import type { JsonObject, JsonValue } from "@starbeam-workspace/json";
 import type { Directory, RegularFile } from "@starbeam-workspace/paths";
 import { Globs } from "@starbeam-workspace/paths";
@@ -274,6 +279,12 @@ export class Extensions implements Iterable<Ext> {
     this.#extensions = extensions;
   }
 
+  [Symbol.for("nodejs.util.inspect.custom")](): object {
+    return DisplayStruct("Extensions", {
+      extensions: this.#extensions,
+    });
+  }
+
   [Symbol.iterator](): IterableIterator<Ext> {
     return this.#extensions[Symbol.iterator]();
   }
diff --git a/workspace/paths/src/paths.ts b/workspace/paths/src/paths.ts
index ca02f83c..7808ee1d 100644
--- a/workspace/paths/src/paths.ts
+++ b/workspace/paths/src/paths.ts
@@ -455,6 +455,7 @@ export class Glob<T extends Path = Path> extends Path {
         } else if (dirent.isSymbolicLink()) {
           // TODO
         } else {
+          // eslint-disable-next-line no-console
           console.warn(
             stringify`glob pattern ${this} unexpectedly matched the ${classify(
               dirent,
diff --git a/workspace/reporter/src/format.ts b/workspace/reporter/src/format.ts
index e351efb2..ebad1692 100644
--- a/workspace/reporter/src/format.ts
+++ b/workspace/reporter/src/format.ts
@@ -10,16 +10,10 @@ import type { InternalLogOptions, LeadingOption } from "./reporter.js";
 const INCREMENT_LEADING = 1;
 
 class Leading {
-  #leading: number | undefined;
   #spaces: number;
   #prefix: string | undefined;
 
-  constructor(
-    leading: number | undefined,
-    spaces: number,
-    prefix: string | undefined
-  ) {
-    this.#leading = leading;
+  constructor(spaces: number, prefix: string | undefined) {
     this.#spaces = spaces;
     this.#prefix = prefix;
   }
@@ -45,21 +39,17 @@ class Leading {
 
 class WrappedLines {
   readonly #leading: Leading;
-  readonly #prefix: string | undefined;
   readonly #lines: readonly WrappedLine[];
 
   constructor(
     lines: readonly WrappedLine[],
     {
       leading,
-      prefix,
     }: {
       leading: Leading;
-      prefix: string | undefined;
-    }
+    },
   ) {
     this.#leading = leading;
-    this.#prefix = prefix;
     this.#lines = lines;
   }
 
@@ -90,7 +80,7 @@ class WrappedLine {
 
     const first = `${leading.asString()}${this.#first}`;
     const rest = this.#rest.map(
-      (line) => `${leading.asString({ extra: INCREMENT_LEADING })}${line}`
+      (line) => `${leading.asString({ extra: INCREMENT_LEADING })}${line}`,
     );
 
     return [first, ...rest];
@@ -101,7 +91,7 @@ export const NO_LEADING = 0;
 
 export function wrapLines(
   string: string,
-  options: InternalLogOptions
+  options: InternalLogOptions,
 ): WrappedLines {
   const lines = string.split("\n");
   const width = terminalWidth();
@@ -119,21 +109,16 @@ export function wrapLines(
     return new WrappedLine({ first, rest });
   });
 
-  return new WrappedLines(wrapped, { leading, prefix: options.prefix });
+  return new WrappedLines(wrapped, { leading });
 }
 
 const EMPTY_PREFIX_SIZE = 0;
 
 function computeColumns(string: string, options: InternalLogOptions): Leading {
-  const { leading, columns } = computeLeading(string, options.leading);
-
-  return new Leading(leading, columns, options.prefix);
+  return new Leading(computeLeading(string, options.leading), options.prefix);
 }
 
-function computeLeading(
-  string: string,
-  leading: LeadingOption
-): { leading: number | undefined; columns: number } {
+function computeLeading(string: string, leading: LeadingOption): number {
   if (leading === "auto") {
     const leadingWS = string.split("\n").map((line) => {
       const match = matchPattern<[string]>(/^(\s*)/, line);
@@ -141,21 +126,17 @@ function computeLeading(
       return leading.length;
     });
 
-    const leading = Math.max(...leadingWS);
-    return { leading, columns: leading * SPACES_PER_TAB };
+    return Math.max(...leadingWS) * SPACES_PER_TAB;
   } else if ("indents" in leading) {
-    return {
-      leading: leading.indents,
-      columns: leading.indents * SPACES_PER_TAB,
-    };
+    return leading.indents * SPACES_PER_TAB;
   } else {
-    return { leading: undefined, columns: leading.spaces };
+    return leading.spaces;
   }
 }
 
 export function wrapIndented(
   fragment: IntoFragment,
-  options: InternalLogOptions
+  options: InternalLogOptions,
 ): string {
   const string = String(Fragment.from(fragment));
   const wrapped = wrapLines(string, options);
@@ -213,7 +194,7 @@ type EntryStyle =
 export function format(value: string, style: FormatStyle): Fragment {
   return Fragment(
     getStyle(style),
-    getIndentation(style) + wrapIndented(value, { leading: "auto" })
+    getIndentation(style) + wrapIndented(value, { leading: "auto" }),
   );
 }
 
@@ -225,13 +206,13 @@ format.entry = ([key, value]: [string, string], style?: EntryStyle): string => {
     stringify`${Fragment(keyStyle, key)}: ${Fragment(valueStyle, value)}`,
     {
       leading: getLeading(style),
-    }
+    },
   );
 };
 
 export function getStyle(
   style: EntryStyle | FormatStyle,
-  part?: "key" | "value"
+  part?: "key" | "value",
 ): Style {
   if (style === undefined) {
     return chalk.visible;
diff --git a/workspace/reporter/src/log.ts b/workspace/reporter/src/log.ts
index 91d2f87d..d4975e01 100644
--- a/workspace/reporter/src/log.ts
+++ b/workspace/reporter/src/log.ts
@@ -64,6 +64,7 @@ export const Style = {
 } as const;
 
 export function log(message: string, style: Style = Style.default): void {
+  // eslint-disable-next-line no-console
   console.info(Fragment(style, message));
 }
 
diff --git a/workspace/reporter/src/logger.ts b/workspace/reporter/src/logger.ts
index 688bfab3..6308e7ad 100644
--- a/workspace/reporter/src/logger.ts
+++ b/workspace/reporter/src/logger.ts
@@ -1,3 +1,4 @@
+/* eslint-disable no-console */
 import { getLast, withoutLast } from "@starbeam/core-utils";
 import { DisplayStruct, terminalWidth } from "@starbeam-workspace/shared";
 
@@ -170,10 +171,6 @@ abstract class InternalLoggerState {
     });
   }
 
-  get #leadingString(): string {
-    return " ".repeat(this.leading * SPACES_PER_TAB);
-  }
-
   begin(
     message: Fragment | undefined,
     options: { breakBefore: boolean },
@@ -205,7 +202,6 @@ abstract class InternalLoggerState {
 
 class InternalLoggerGroupState extends InternalLoggerState {
   readonly #state: GroupState;
-  readonly #options: ReporterOptions;
   readonly #parent: InternalLoggerState;
 
   constructor(
@@ -215,7 +211,6 @@ class InternalLoggerGroupState extends InternalLoggerState {
   ) {
     super(options);
     this.#state = state;
-    this.#options = options;
     this.#parent = parent;
   }
 
@@ -292,15 +287,8 @@ class InternalLoggerGroupState extends InternalLoggerState {
 }
 
 class InternalLoggerTopState extends InternalLoggerState {
-  readonly #options: ReporterOptions;
-
   readonly leading = 0;
 
-  constructor(options: ReporterOptions) {
-    super(options);
-    this.#options = options;
-  }
-
   get didPrint(): never {
     throw Error("Cannot get didPrint in top state");
   }
diff --git a/workspace/reporter/src/report-error.ts b/workspace/reporter/src/report-error.ts
index 20a6850b..03efa53a 100644
--- a/workspace/reporter/src/report-error.ts
+++ b/workspace/reporter/src/report-error.ts
@@ -1,3 +1,4 @@
+/* eslint-disable no-console */
 import chalk from "chalk";
 
 import type { ReportErrorOptions } from "./error.js";
diff --git a/workspace/reporter/src/reporter.ts b/workspace/reporter/src/reporter.ts
index 3032c1e7..40f1b06d 100644
--- a/workspace/reporter/src/reporter.ts
+++ b/workspace/reporter/src/reporter.ts
@@ -63,7 +63,6 @@ export class Reporter implements AbstractReporter {
 
   readonly #workspace: Workspace;
   readonly #options: ReporterOptions;
-  readonly #parent: Reporter | null;
   readonly #logger: Logger;
 
   private constructor(
@@ -73,7 +72,6 @@ export class Reporter implements AbstractReporter {
   ) {
     this.#workspace = workspace;
     this.#options = options;
-    this.#parent = parent;
 
     if (parent) {
       this.#logger = parent.#logger;
diff --git a/workspace/scripts/src/ci.ts b/workspace/scripts/src/ci.ts
index 99484847..1bf0c092 100644
--- a/workspace/scripts/src/ci.ts
+++ b/workspace/scripts/src/ci.ts
@@ -24,8 +24,6 @@ export const CiCommand = QueryCommand("ci", "run CI checks", {
   const script = scripts[type];
   const shouldRun = SHOULD_RUN[type];
 
-  console.log({ packages, shouldRun });
-
   const results = await workspace.check(
     ...packages.filter(shouldRun).map((pkg) => {
       const { command, cwd } = hydrateScript(script, { workspace, pkg });
diff --git a/workspace/scripts/src/support/commands/data.ts b/workspace/scripts/src/support/commands/data.ts
index 75e86d7a..af55c173 100644
--- a/workspace/scripts/src/support/commands/data.ts
+++ b/workspace/scripts/src/support/commands/data.ts
@@ -18,13 +18,10 @@ export class BooleanFlag implements CommandParameter {
     return new BooleanFlag(spec);
   };
 
-  readonly #spec: command.FlagSpec;
   readonly #name: BooleanFlagName;
   readonly #desc: Desc;
 
   private constructor(spec: command.FlagSpec) {
-    this.#spec = spec;
-
     const [long, desc] = spec;
     this.#name = BooleanFlagName.of(long);
     this.#desc = Desc.of(desc);
@@ -47,14 +44,11 @@ export class ValuedOption implements CommandParameter {
     return new ValuedOption(spec);
   };
 
-  readonly #spec: command.ValuedOptionSpec;
   readonly #long: LongFlag;
   readonly #desc: Desc;
   readonly #type: Type<command.OptionValue> | undefined;
 
   private constructor(spec: command.ValuedOptionSpec) {
-    this.#spec = spec;
-
     const [rawLong, rawDesc, rawType] = spec;
 
     this.#long = LongFlag.of(rawLong);
@@ -76,13 +70,11 @@ export class Arg implements CommandParameter {
     return new Arg(spec);
   };
 
-  readonly #spec: command.ArgSpec;
   readonly #desc: ArgDesc;
+  // eslint-disable-next-line no-unused-private-class-members -- @todo
   readonly #type: Type;
 
   private constructor(spec: command.ArgSpec) {
-    this.#spec = spec;
-
     const [desc, type] = spec;
     this.#desc = ArgDesc.of(desc);
     this.#type = Type.of(type);
@@ -160,11 +152,9 @@ class Desc {
     return new Desc(spec);
   }
 
-  readonly #spec: string;
   readonly #unpacked: UnpackedDescSpec;
 
   private constructor(spec: string) {
-    this.#spec = spec;
     this.#unpacked = unpackDescSpec(spec);
   }
 
@@ -182,7 +172,6 @@ class LongFlag {
     return new LongFlag(spec);
   }
 
-  readonly #spec: command.ValuedOptionSpec[0];
   readonly #unpacked: {
     long: LongFlagString;
     label: string;
@@ -190,7 +179,6 @@ class LongFlag {
   };
 
   private constructor(spec: command.ValuedOptionSpec[0]) {
-    this.#spec = spec;
     this.#unpacked = unpackLongFlagSpec(spec);
   }
 
@@ -281,14 +269,11 @@ class ArgDesc {
     return new ArgDesc(spec);
   }
 
-  readonly #spec: command.ArgDesc;
   readonly #label: string;
   readonly #required: boolean;
   readonly #description: string;
 
   private constructor(spec: command.ArgDesc) {
-    this.#spec = spec;
-
     const { label, required, description } = unpackArgDesc(spec);
 
     this.#label = label;
diff --git a/workspace/scripts/src/support/commands/options.ts b/workspace/scripts/src/support/commands/options.ts
index 3e8228ff..7071da7c 100644
--- a/workspace/scripts/src/support/commands/options.ts
+++ b/workspace/scripts/src/support/commands/options.ts
@@ -7,6 +7,7 @@ import chalk from "chalk";
 import type { Command } from "commander";
 
 declare class CompileError<_S extends string = string, In = unknown> {
+  // eslint-disable-next-line no-unused-private-class-members
   #in: In;
 }
 
diff --git a/workspace/scripts/src/support/template/update-eslint.ts b/workspace/scripts/src/support/template/update-eslint.ts
index d3000dde..6c5bd123 100644
--- a/workspace/scripts/src/support/template/update-eslint.ts
+++ b/workspace/scripts/src/support/template/update-eslint.ts
@@ -7,36 +7,46 @@ import { UpdatePackageFn } from "./updates.js";
 
 type ConfigOverride = NonNullable<ESLint.ConfigData["overrides"]>[number];
 
-export const updateEslint = {
-  demo: UpdatePackageFn((updater) => {
-    updater.json(".eslintrc.json", () => {
-      return {
-        root: true,
-        plugins: ["@starbeam"],
+const BASE = {
+  root: true,
+  ignorePatterns: ["node_modules", "dist", "html", "tests"],
+  plugins: ["@starbeam"],
+};
+
+export const updateEslintrc = UpdatePackageFn((updater, options) => {
+  const pkg = updater.pkg;
+
+  if (pkg.type.hasCategory("demo")) {
+    DEMO(updater, options);
+  } else {
+    PACKAGE(updater, options);
+  }
+});
 
-        overrides: [
-          localEslintConfig(updater),
-          localEslintConfig(updater, {
-            files: ["vite.config.ts"],
-            extend: "@starbeam/loose",
-          }),
-          JSON_ESLINT_CONFIG,
-        ],
-      };
-    });
-  }),
+const DEMO = UpdatePackageFn((updater) => {
+  updater.json(".eslintrc.json", () => {
+    return {
+      ...BASE,
+      overrides: [
+        localEslintConfig(updater),
+        localEslintConfig(updater, {
+          files: ["vite.config.ts"],
+          extend: "@starbeam/loose",
+        }),
+        JSON_ESLINT_CONFIG,
+      ],
+    };
+  });
+});
 
-  package: UpdatePackageFn((update) => {
-    update.json(".eslintrc.json", () => {
-      return {
-        root: true,
-        ignorePatterns: ["node_modules", "dist", "html", "tests"],
-        plugins: ["@starbeam"],
-        overrides: [localEslintConfig(update), JSON_ESLINT_CONFIG],
-      };
-    });
-  }),
-} as const;
+const PACKAGE = UpdatePackageFn((update) => {
+  update.json(".eslintrc.json", () => {
+    return {
+      ...BASE,
+      overrides: [localEslintConfig(update), JSON_ESLINT_CONFIG],
+    };
+  });
+});
 
 function eslintPlugin(pkg: Package): `@starbeam/${string}` {
   if (pkg.moduleType === "cjs") {
diff --git a/workspace/scripts/src/support/template/update-package-json.ts b/workspace/scripts/src/support/template/update-package-json.ts
index 56840559..085bf13d 100644
--- a/workspace/scripts/src/support/template/update-package-json.ts
+++ b/workspace/scripts/src/support/template/update-package-json.ts
@@ -41,17 +41,22 @@ export function updatePackageJSON(updater: LabelledUpdater): void {
           )
           .if(categoryIs("demo"), addDevDep("@vitest/ui"))
           .if(typeIs("demo:react"), insert({ "starbeam:source": "tsx" }))
-          .if(typeIs("tests"), insert({ "starbeam:source": "tsx" }))
+          .if(typeIs("tests"), insert.defaults({ "starbeam:source": "tsx" }))
           .if(typeIs("library:interfaces"), (m) => {
             switch (m.main) {
               case "index.ts":
-                return m.insert({ types: "index.ts", "starbeam:source": "ts" });
+                return m
+                  .insert({ types: "index.ts" })
+                  .insertDefaults({ "starbeam:source": "ts" });
               case "index.d.ts":
-                return m.insert({
-                  types: "index.d.ts",
-                  "starbeam:source": "d.ts",
-                  "publishConfig:exports": { default: "./index.d.ts" },
-                });
+                return m
+                  .insert({
+                    types: "index.d.ts",
+                    "publishConfig:exports": { default: "./index.d.ts" },
+                  })
+                  .insertDefaults({
+                    "starbeam:source": "d.ts",
+                  });
               default:
                 return m.report(
                   fragment`Since the package type is library:interfaces, main must either be ${Fragment.header.inverse(
@@ -60,7 +65,10 @@ export function updatePackageJSON(updater: LabelledUpdater): void {
                 );
             }
           })
-          .if(typeIs("tests"), insert({ "starbeam:source": "ts" }))
+          .ifLet(
+            (pkg) => (pkg.type.is("tests") ? pkg.starbeam.jsx : undefined),
+            (jsx) => insert({ "starbeam:source": jsx ? "tsx" : "ts" }),
+          )
           .if(
             typeIs("library:upstream-types"),
             insert({ types: "index.d.ts", "starbeam:source": "d.ts" }),
@@ -120,7 +128,7 @@ const addDevDep =
     manifest.addDevDep(name);
 
 /**
- * Add an entry to the manifest.
+ * Insert entries into the manifest. If the entries already exist, update them.
  *
  * If the entry is specified using a colon-separated path as its key, it is
  * normalized to a nested JSON path when inserted.
@@ -135,6 +143,17 @@ const insert =
   (manifest) =>
     manifest.insert(entries);
 
+/**
+ * Initialize the manifest with the given entries. If the entry already exists,
+ * leave it alone.
+ *
+ * The behavior of the specified entries is the same as {@linkcode insert}.
+ */
+insert.defaults =
+  (entries: Record<string, JsonValue>): Action =>
+  (manifest) =>
+    manifest.insertDefaults(entries);
+
 const scripts =
   (scripts: Record<string, string>): Action =>
   (manifest) =>
@@ -213,11 +232,30 @@ class ManifestBuilder {
     return this;
   }
 
+  #initializeEntry(key: string, value: JsonValue): ManifestBuilder {
+    if (key in this.#current) return this;
+    return this.addEntry(key, value);
+  }
+
   addEntry(key: string, value: JsonValue): ManifestBuilder {
     this.#current[key] = value;
     return this;
   }
 
+  insertDefaults(entries: Record<string, JsonValue>): ManifestBuilder {
+    for (const [key, value] of Object.entries(entries)) {
+      const [parentKey, childKey] = key.split(":");
+
+      if (parentKey && childKey) {
+        this.#initializeNested([parentKey, childKey], value);
+      } else {
+        this.#initializeEntry(key, value);
+      }
+    }
+
+    return this;
+  }
+
   /**
    * @see {insert}
    */
@@ -235,6 +273,29 @@ class ManifestBuilder {
     return this;
   }
 
+  #initializeNested(
+    [parentKey, key]: [string, string],
+    value: JsonValue,
+  ): ManifestBuilder {
+    let child = this.#current[parentKey];
+
+    if (!child) {
+      child = this.#current[parentKey] = {
+        [key]: value,
+      };
+    } else if (typeof child === "object" && !Array.isArray(child)) {
+      if (!child[key]) child[key] = value;
+    } else {
+      this.#errors.push(
+        fragment`Invalid ${JSON.stringify(
+          String(key),
+        )} in package.json (expected object): ${this.#pkg.name}`,
+      );
+    }
+
+    return this;
+  }
+
   addNested(
     [parentKey, key]: [string, string],
     value: JsonValue,
diff --git a/workspace/scripts/src/support/template/updates.ts b/workspace/scripts/src/support/template/updates.ts
index 3db83610..c8edc8cd 100644
--- a/workspace/scripts/src/support/template/updates.ts
+++ b/workspace/scripts/src/support/template/updates.ts
@@ -1,7 +1,6 @@
 import type { Directory, Paths } from "@starbeam-workspace/paths";
 import type { Workspace } from "@starbeam-workspace/reporter";
 
-import { updateEslint } from "./update-eslint.js";
 import type { LabelledUpdater } from "../updating/update-file.js";
 
 export type SyncUpdatePackageFn = (
@@ -30,7 +29,6 @@ export const updateRollup = UpdatePackageFn((update) => {
   update.template("rollup.config.mjs");
 });
 
-export const updateDemo = UpdatePackageFn((update, options) => {
+export const updateDemo = UpdatePackageFn((update) => {
   update.template("vite.config.ts");
-  updateEslint.demo(update, options);
 });
diff --git a/workspace/scripts/src/support/updating/update-file.ts b/workspace/scripts/src/support/updating/update-file.ts
index c6297c42..5a2e34a6 100644
--- a/workspace/scripts/src/support/updating/update-file.ts
+++ b/workspace/scripts/src/support/updating/update-file.ts
@@ -70,6 +70,7 @@ export class UpdatePackage {
 
   done(): void {
     if (this.#emittedHeader) {
+      // eslint-disable-next-line no-console -- @fixme
       console.groupEnd();
     }
   }
@@ -348,12 +349,15 @@ export class UpdatePackages {
 
   when: UpdatePackagesFn = (condition, label) => {
     return {
-      use: (updater) => {
-        this.#updates.push({
-          condition,
-          updateFn: updater,
-          label,
-        });
+      use: (...updaters) => {
+        for (const updater of updaters) {
+          this.#updates.push({
+            condition,
+            updateFn: updater,
+            label,
+          });
+        }
+
         return this;
       },
     };
@@ -418,7 +422,7 @@ export type UpdatePackagesFn = (
   condition: (pkg: Package) => boolean,
   label: string,
 ) => {
-  use: (updater: UpdatePackageFn) => UpdatePackages;
+  use: (...updaters: UpdatePackageFn[]) => UpdatePackages;
 };
 
 type UpdateJsonFn = <U extends JsonUpdates>(
diff --git a/workspace/scripts/src/template.ts b/workspace/scripts/src/template.ts
index 47c7764d..746d2aee 100644
--- a/workspace/scripts/src/template.ts
+++ b/workspace/scripts/src/template.ts
@@ -1,10 +1,10 @@
 import { QueryCommand } from "./support/commands/query-command";
-import { updateEslint } from "./support/template/update-eslint";
-import { UpdatePackages } from "./support/updating/update-file.js";
+import { updateEslintrc } from "./support/template/update-eslint";
 import { updatePackageJSON } from "./support/template/update-package-json.js";
 import { updateTests } from "./support/template/update-tests.js";
 import { updateTsconfig } from "./support/template/update-tsconfig.js";
-import { updateDemo, updateRollup } from "./support/template/updates.js";
+import { updateRollup } from "./support/template/updates.js";
+import { UpdatePackages } from "./support/updating/update-file.js";
 
 export const TemplateCommand = QueryCommand("template", "template a package", {
   notes:
@@ -13,18 +13,18 @@ export const TemplateCommand = QueryCommand("template", "template a package", {
   const updater = new UpdatePackages(workspace, packages);
 
   await updater.update((when) => {
-    when(() => true, "all packages").use(updatePackageJSON);
+    when(() => true, "all packages").use(updatePackageJSON, updateEslintrc);
     when((pkg) => pkg.type.is("tests"), "tests").use(updateTests);
     when((pkg) => pkg.isTypescript, "typescript").use(updateTsconfig);
     when((pkg) => pkg.type.is("library:public"), "published libraries").use(
       updateRollup,
     );
-    when(
-      (pkg) =>
-        pkg.sources.some((s) => s.hasFiles()) &&
-        (pkg.type.hasCategory("library") || pkg.type.is("tests")),
-      "libraries",
-    ).use(updateEslint.package);
-    when((pkg) => pkg.type.hasCategory("demo"), "demos").use(updateDemo);
+    // when(
+    //   (pkg) =>
+    //     pkg.sources.some((s) => s.hasFiles()) &&
+    //     (pkg.type.hasCategory("library") || pkg.type.is("tests")),
+    //   "lintable",
+    // ).use(updateEslint.package);
+    // when((pkg) => pkg.type.hasCategory("demo"), "demos").use(updateDemo);
   });
 });
diff --git a/workspace/shared/src/type-magic.ts b/workspace/shared/src/type-magic.ts
index cdb3919b..6ddfae45 100644
--- a/workspace/shared/src/type-magic.ts
+++ b/workspace/shared/src/type-magic.ts
@@ -525,14 +525,14 @@ export class Result<T, E = unknown> {
     }
   }
 
-  map<const R extends IntoResult<any, any>>(
-    callback: (value: T) => R,
-  ): LiftResult<R> {
+  map<const T2, const E2 = E>(
+    callback: (value: T) => IntoResult<T2, E2>,
+  ): Result<T2, E | E2> {
     switch (this.#variant.status) {
       case "ok":
-        return Result.ok(callback(this.#variant.value)) as LiftResult<R>;
+        return Result.ok(callback(this.#variant.value)) as Result<T2, E | E2>;
       case "err":
-        return Result.err(this.#variant.reason) as LiftResult<R>;
+        return Result.err(this.#variant.reason) as Result<T2, E | E2>;
     }
   }
 
diff --git a/workspace/test-utils/package.json b/workspace/test-utils/package.json
index ca9246e7..44c6e6ce 100644
--- a/workspace/test-utils/package.json
+++ b/workspace/test-utils/package.json
@@ -18,7 +18,9 @@
     "main": "dist/index.cjs",
     "types": "dist/index.d.ts"
   },
-  "starbeam:type": "library:test-support",
+  "starbeam": {
+    "type": "library:test-support"
+  },
   "scripts": {
     "test:lint": "eslint . --max-warnings 0",
     "test:types": "tsc -b"
diff --git a/workspace/test-utils/src/actions.ts b/workspace/test-utils/src/actions.ts
index c37410a3..8b94789a 100644
--- a/workspace/test-utils/src/actions.ts
+++ b/workspace/test-utils/src/actions.ts
@@ -113,10 +113,12 @@ export function withCause<T>(
   try {
     return block();
   } catch (e: unknown) {
+    // eslint-disable-next-line no-console
     console.warn(e);
     let error;
     if (isAssertionError(e)) {
       error = e;
+      // eslint-disable-next-line no-console
       console.log(error.stack);
       error.cause = cause();
     } else if (e instanceof Error) {
diff --git a/workspace/utils/src/consolidate.ts b/workspace/utils/src/consolidate.ts
index 31be1e84..6e17c2a8 100644
--- a/workspace/utils/src/consolidate.ts
+++ b/workspace/utils/src/consolidate.ts
@@ -1,9 +1,5 @@
 import type { JsonObject } from "@starbeam-workspace/json";
-import {
-  type AbstractReporter,
-  fragment,
-  type IntoFragment,
-} from "@starbeam-workspace/reporter";
+import { fragment } from "@starbeam-workspace/reporter";
 import { Result } from "@starbeam-workspace/shared";
 
 import { fallible } from "./fallible.js";
@@ -42,18 +38,7 @@ export const consolidate = fallible((object: JsonObject, parent: string) => {
 if (import.meta.vitest) {
   const { test, expect } = import.meta.vitest;
 
-  type ReportedError = Error | IntoFragment;
-
-  class TestReporter implements AbstractReporter {
-    constructor(readonly errors: ReportedError[] = []) {}
-    readonly reportError = (error: ReportedError): void => {
-      this.errors.push(error);
-    };
-  }
-
   test("consolidate flat keys", () => {
-    const reporter = new TestReporter();
-
     expect(
       consolidate(
         {
@@ -74,13 +59,9 @@ if (import.meta.vitest) {
         },
       }),
     );
-
-    expect(reporter.errors).toEqual([]);
   });
 
   test("consolidate mixed keys", () => {
-    const reporter = new TestReporter();
-
     expect(
       consolidate(
         {
@@ -101,13 +82,9 @@ if (import.meta.vitest) {
         },
       }),
     );
-
-    expect(reporter.errors).toEqual([]);
   });
 
   test("consolidate non-object keys is an error", () => {
-    const reporter = new TestReporter();
-
     expect(
       consolidate(
         {
diff --git a/workspace/workspace/src/workspace.ts b/workspace/workspace/src/workspace.ts
index d185b57f..11d0ce57 100644
--- a/workspace/workspace/src/workspace.ts
+++ b/workspace/workspace/src/workspace.ts
@@ -37,15 +37,11 @@ export class Workspace implements IWorkspace {
     return new Workspace(Paths.root(root), options);
   }
 
-  readonly #verbose: boolean;
-  readonly #stylish: boolean;
   readonly #paths: Paths;
   readonly #reporter: Reporter;
 
   constructor(paths: Paths, options: ReporterOptions) {
     this.#paths = paths;
-    this.#verbose = options.verbose;
-    this.#stylish = options.stylish;
     this.#reporter = Reporter.root(this, options);
   }