refactor(repo): centralize package subpaths

package.json

@@ -24,7 +24,9 @@
     "changelog:weekly": "tsx scripts/changelog-weekly.ts",
     "sync-schemas": "tsx scripts/sync-schemas.ts",
     "sync-schemas:check": "tsx scripts/sync-schemas.ts --check",
-    "lint": "bun run check:tracked-artifacts && bun run check:workspace-contracts && bun run check:package-cycles && oxlint . && tsx scripts/lint-skills.ts",
+    "sync:package-subpaths": "node scripts/package-subpaths.mjs --write",
+    "check:package-subpaths": "node scripts/package-subpaths.mjs",
+    "lint": "bun run check:tracked-artifacts && bun run check:workspace-contracts && bun run check:package-cycles && bun run check:package-subpaths && oxlint . && tsx scripts/lint-skills.ts",
     "lint:skills": "tsx scripts/lint-skills.ts",
     "lint:fix": "oxlint --fix .",
     "check:tracked-artifacts": "node scripts/check-tracked-artifacts.mjs",
@@ -42,7 +44,7 @@
     "player:perf": "bun run --filter @hyperframes/player perf",
     "format:check": "oxfmt --check .",
     "knip": "knip",
-    "test:scripts": "node --import tsx --test scripts/check-tracked-artifacts.test.mjs scripts/check-workspace-contracts.test.mjs scripts/check-package-cycles.test.mjs scripts/validate-release-channel.test.mjs scripts/draft-changelog.test.ts scripts/set-version.test.ts scripts/release-prepare.test.ts scripts/cli-options.test.ts scripts/changelog-weekly.test.ts scripts/claude-plugin-compression.test.ts scripts/studio-runtime-smoke.test.mjs scripts/verify-packed-manifests.test.mjs",
+    "test:scripts": "node --import tsx --test scripts/check-tracked-artifacts.test.mjs scripts/check-workspace-contracts.test.mjs scripts/check-package-cycles.test.mjs scripts/package-subpaths.test.mjs scripts/validate-release-channel.test.mjs scripts/draft-changelog.test.ts scripts/set-version.test.ts scripts/release-prepare.test.ts scripts/cli-options.test.ts scripts/changelog-weekly.test.ts scripts/claude-plugin-compression.test.ts scripts/studio-runtime-smoke.test.mjs scripts/verify-packed-manifests.test.mjs",
     "test:skills": "node --test 'skills/**/*.test.mjs'",
     "generate:previews": "tsx scripts/generate-template-previews.ts",
     "generate:catalog-previews": "tsx scripts/generate-catalog-previews.ts",

packages/aws-lambda/package-subpaths.json

@@ -0,0 +1,29 @@
+{
+  "package": "@hyperframes/aws-lambda",
+  "subpaths": {
+    ".": {
+      "source": "./src/index.ts",
+      "runtime": "./dist/index.js",
+      "types": "./dist/index.d.ts",
+      "environments": ["bun", "node"]
+    },
+    "./handler": {
+      "source": "./src/handler.ts",
+      "runtime": "./dist/handler.js",
+      "types": "./dist/handler.d.ts",
+      "environments": ["bun", "node"]
+    },
+    "./sdk": {
+      "source": "./src/sdk/index.ts",
+      "runtime": "./dist/sdk/index.js",
+      "types": "./dist/sdk/index.d.ts",
+      "environments": ["bun", "node"]
+    },
+    "./cdk": {
+      "source": "./src/cdk/index.ts",
+      "runtime": "./dist/cdk/index.js",
+      "types": "./dist/cdk/index.d.ts",
+      "environments": ["bun", "node"]
+    }
+  }
+}

packages/aws-lambda/package.json

@@ -17,24 +17,46 @@
   "types": "./dist/index.d.ts",
   "exports": {
     ".": {
-      "import": "./dist/index.js",
-      "types": "./dist/index.d.ts"
+      "bun": "./src/index.ts",
+      "import": "./src/index.ts",
+      "types": "./src/index.ts"
     },
     "./handler": {
-      "import": "./dist/handler.js",
-      "types": "./dist/handler.d.ts"
+      "bun": "./src/handler.ts",
+      "import": "./src/handler.ts",
+      "types": "./src/handler.ts"
     },
     "./sdk": {
-      "import": "./dist/sdk/index.js",
-      "types": "./dist/sdk/index.d.ts"
+      "bun": "./src/sdk/index.ts",
+      "import": "./src/sdk/index.ts",
+      "types": "./src/sdk/index.ts"
     },
     "./cdk": {
-      "import": "./dist/cdk/index.js",
-      "types": "./dist/cdk/index.d.ts"
+      "bun": "./src/cdk/index.ts",
+      "import": "./src/cdk/index.ts",
+      "types": "./src/cdk/index.ts"
     }
   },
   "publishConfig": {
     "access": "public",
+    "exports": {
+      ".": {
+        "import": "./dist/index.js",
+        "types": "./dist/index.d.ts"
+      },
+      "./handler": {
+        "import": "./dist/handler.js",
+        "types": "./dist/handler.d.ts"
+      },
+      "./sdk": {
+        "import": "./dist/sdk/index.js",
+        "types": "./dist/sdk/index.d.ts"
+      },
+      "./cdk": {
+        "import": "./dist/cdk/index.js",
+        "types": "./dist/cdk/index.d.ts"
+      }
+    },
     "registry": "https://registry.npmjs.org/"
   },
   "scripts": {

packages/cli/tsup.config.ts

@@ -1,6 +1,7 @@
 import { defineConfig } from "tsup";
 import { resolve } from "node:path";
 import { readFileSync } from "node:fs";
+import { sourceAliases } from "../../scripts/package-subpaths.mjs";
 
 const pkg = JSON.parse(readFileSync(new URL("./package.json", import.meta.url), "utf-8")) as {
   version: string;
@@ -79,27 +80,12 @@ var __dirname = __hf_dirname(__filename);`,
   },
   esbuildOptions(options) {
     options.alias = {
-      "@hyperframes/producer": resolve(__dirname, "../producer/src/index.ts"),
-      // esbuild's alias map treats `@hyperframes/producer` as a file path
-      // and would otherwise resolve `@hyperframes/producer/distributed`
-      // to `../producer/src/index.ts/distributed` (treating the file as a
-      // directory). Adding an explicit alias for every subpath we import
-      // avoids the prefix-substitution misfire.
-      "@hyperframes/producer/distributed": resolve(__dirname, "../producer/src/distributed.ts"),
-      // Same reason: the lambda CLI imports `@hyperframes/aws-lambda/sdk`,
-      // which would resolve to `../aws-lambda/src/index.ts/sdk` without
-      // an explicit subpath alias. The SDK subpath has its own barrel.
-      "@hyperframes/aws-lambda/sdk": resolve(__dirname, "../aws-lambda/src/sdk/index.ts"),
-      // Same for the GCP adapter's SDK subpath barrel.
-      "@hyperframes/gcp-cloud-run/sdk": resolve(__dirname, "../gcp-cloud-run/src/sdk/index.ts"),
-      // hf#677 follow-up: the shader-blend worker imports from
-      // `@hyperframes/engine/shader-transitions` (subpath export) — a
-      // standalone TS file with zero internal imports that survives the
-      // worker_thread loader boundary.
-      "@hyperframes/engine/shader-transitions": resolve(
-        __dirname,
-        "../engine/src/utils/shaderTransitions.ts",
-      ),
+      // Exact subpaths are generated from the same contracts as package
+      // exports, avoiding esbuild's root-alias prefix substitution trap.
+      ...sourceAliases(resolve(__dirname, "../producer"), [".", "./distributed"]),
+      ...sourceAliases(resolve(__dirname, "../aws-lambda"), ["./sdk"]),
+      ...sourceAliases(resolve(__dirname, "../gcp-cloud-run"), ["./sdk"]),
+      ...sourceAliases(resolve(__dirname, "../engine"), [".", "./shader-transitions"]),
     };
     options.loader = { ...options.loader, ".browser.js": "text" };
   },