build(audience): make @imtbl/audience publishable as an npm tarball

Makes @imtbl/audience installable from npm (unblocks SDK-66) and
picks it up by the monorepo's publish workflow (unblocks the first
publish).

Changes to packages/audience/sdk only:
- tsup.config.js: local config that extends the monorepo defaults and sets
  noExternal: [/^@imtbl\//] so runtime JS inlines audience-core and its
  transitive metrics dep.
- rollup.dts.config.js + rollup-plugin-dts: post-typegen step that rolls up
  the generated declaration file with respectExternal so public types are
  self-contained.
- scripts/prepack.mjs + scripts/postpack.mjs: strip 'workspace:*' deps from
  the published package.json before pack, restore afterwards so the
  developer working tree stays on workspace form.
- package.json: add 'pack:root' script matching every other shipped
  @imtbl/* package so the root 'pack-npm-packages' recursive invocation
  actually packs @imtbl/audience. Without this the publish workflow
  silently skipped the package.
- .eslintignore: exempt the new tsup.config.js / rollup.dts.config.js from
  project-based eslint (mirrors existing pattern for build-time configs).

Verified locally:
- dist/node/*.js, dist/node/*.cjs, dist/browser/*.js contain no bare
  @imtbl/* imports
- dist/types/index.d.ts contains no @imtbl/* re-exports
- Installing the produced tarball into a fresh /tmp directory via
  'npm install' resolves both the runtime require and the types
- 'pnpm --filter @imtbl/audience pack:root' produces imtbl-audience-0.0.0.tgz
  at the repo root — same location pattern as passport, checkout, etc.

Refs: SDK-66, SDK-63

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ImmutableJeffrey

.eslintignore

@@ -21,3 +21,5 @@ packages/internal/generated-clients/src/
 
 # put module specific ignore paths here
 packages/game-bridge/scripts/**/*.js
+packages/audience/sdk/rollup.dts.config.js
+packages/audience/sdk/tsup.config.js

packages/audience/sdk/package.json

@@ -15,6 +15,8 @@
     "eslint": "^8.56.0",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.4.3",
+    "rollup": "^4.22.4",
+    "rollup-plugin-dts": "^6.4.1",
     "ts-jest": "^29.1.0",
     "tsup": "^8.3.0",
     "typescript": "^5.6.2"
@@ -36,7 +38,9 @@
       "default": "./dist/node/index.js"
     }
   },
-  "files": ["dist"],
+  "files": [
+    "dist"
+  ],
   "homepage": "https://github.com/immutable/ts-immutable-sdk#readme",
   "main": "dist/node/index.cjs",
   "module": "dist/node/index.js",
@@ -47,9 +51,12 @@
   "repository": "immutable/ts-immutable-sdk.git",
   "scripts": {
     "build": "pnpm transpile && pnpm typegen",
-    "transpile": "tsup src/index.ts --config ../../../tsup.config.js",
-    "typegen": "tsc --customConditions default --emitDeclarationOnly --outDir dist/types",
+    "transpile": "tsup --config tsup.config.js",
+    "typegen": "tsc --customConditions default --emitDeclarationOnly --outDir dist/types && rollup -c rollup.dts.config.js",
     "lint": "eslint ./src --ext .ts,.jsx,.tsx --max-warnings=0",
+    "pack:root": "pnpm pack --pack-destination $(dirname $(pnpm root -w))",
+    "prepack": "node scripts/prepack.mjs",
+    "postpack": "node scripts/postpack.mjs",
     "test": "jest --passWithNoTests",
     "test:watch": "jest --watch",
     "typecheck": "tsc --customConditions development --noEmit --jsx preserve"

packages/audience/sdk/rollup.dts.config.js

@@ -0,0 +1,17 @@
+// Roll up the generated .d.ts files so that type re-exports from
+// `@imtbl/audience-core` (and its transitive `@imtbl/metrics`) are inlined
+// into a single self-contained declaration file. Without this, consumers of
+// the published tarball would get unresolved type references, because the
+// @imtbl/* packages are bundled into dist/ but not published alongside.
+import { dts } from 'rollup-plugin-dts';
+
+// By default, rollup treats every non-relative import as external — so
+// `@imtbl/audience-core` type re-exports would stay as bare imports in the
+// output. Pass `respectExternal: true` so the plugin walks through node
+// resolution to `.d.ts` files for @imtbl/* workspace packages and inlines
+// them into the rolled-up declaration file.
+export default {
+  input: 'dist/types/index.d.ts',
+  output: { file: 'dist/types/index.d.ts', format: 'es' },
+  plugins: [dts({ respectExternal: true })],
+};

packages/audience/sdk/scripts/postpack.mjs

@@ -0,0 +1,18 @@
+#!/usr/bin/env node
+/*
+ * postpack: restore the package.json that prepack.mjs backed up.
+ *
+ * Runs after `npm pack` / `npm publish` finishes, so the developer's working
+ * tree goes back to referencing `@imtbl/audience-core: workspace:*` for
+ * local monorepo development.
+ */
+import { existsSync, copyFileSync, unlinkSync } from 'node:fs';
+
+const pkgPath = new URL('../package.json', import.meta.url);
+const backupPath = new URL('../package.json.prepack-backup', import.meta.url);
+
+if (existsSync(backupPath)) {
+  copyFileSync(backupPath, pkgPath);
+  unlinkSync(backupPath);
+  console.log('[postpack] restored original package.json');
+}

packages/audience/sdk/scripts/prepack.mjs

@@ -0,0 +1,32 @@
+#!/usr/bin/env node
+/*
+ * prepack: strip workspace-protocol deps from package.json before `npm pack`.
+ *
+ * The runtime JS (dist/node, dist/browser) and the bundled .d.ts already
+ * inline `@imtbl/audience-core` and its transitive `@imtbl/metrics` dep, so
+ * they don't need to be listed as runtime deps in the published package. If
+ * we left them, npm would choke on the `workspace:*` protocol at install.
+ *
+ * A sibling postpack.mjs restores the original package.json after the tarball
+ * is written, so the developer's working tree is never left modified.
+ */
+import { readFileSync, writeFileSync, copyFileSync } from 'node:fs';
+
+const pkgPath = new URL('../package.json', import.meta.url);
+const backupPath = new URL('../package.json.prepack-backup', import.meta.url);
+
+copyFileSync(pkgPath, backupPath);
+const pkg = JSON.parse(readFileSync(pkgPath, 'utf8'));
+
+// Deps bundled into dist/: remove from published metadata.
+const bundledWorkspaceDeps = ['@imtbl/audience-core', '@imtbl/metrics'];
+for (const name of bundledWorkspaceDeps) {
+  if (pkg.dependencies) delete pkg.dependencies[name];
+}
+// Clean up empty dependencies object.
+if (pkg.dependencies && Object.keys(pkg.dependencies).length === 0) {
+  delete pkg.dependencies;
+}
+
+writeFileSync(pkgPath, `${JSON.stringify(pkg, null, 2)}\n`);
+console.log('[prepack] stripped bundled workspace deps from package.json');

packages/audience/sdk/tsup.config.js

@@ -0,0 +1,74 @@
+// @ts-check
+// Local tsup config for @imtbl/audience.
+//
+// Extends the monorepo's root tsup config but overrides `noExternal` so that
+// every `@imtbl/*` workspace dep (audience-core, its transitive metrics dep)
+// is inlined into the built bundle. This makes the package installable as a
+// standalone tarball without the pnpm `workspace:*` protocol.
+import { defineConfig } from 'tsup';
+import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
+import { replace } from 'esbuild-plugin-replace';
+import pkg from './package.json' assert { type: 'json' };
+
+const IMTBL_WORKSPACE = /^@imtbl\//;
+
+export default defineConfig((options) => {
+  if (options.watch) {
+    return {
+      entry: ['src/index.ts'],
+      outDir: 'dist/browser',
+      format: 'esm',
+      target: 'es2022',
+      platform: 'browser',
+      bundle: true,
+      noExternal: [IMTBL_WORKSPACE],
+      esbuildPlugins: [
+        nodeModulesPolyfillPlugin({
+          globals: { Buffer: true, process: true },
+          modules: ['crypto', 'buffer', 'process'],
+        }),
+        replace({
+          __SDK_VERSION__: pkg.version === '0.0.0' ? '2.0.0' : pkg.version,
+        }),
+      ],
+    };
+  }
+
+  return [
+    // Browser ESM bundle
+    {
+      entry: ['src/index.ts'],
+      outDir: 'dist/browser',
+      platform: 'browser',
+      format: 'esm',
+      target: 'es2022',
+      minify: true,
+      bundle: true,
+      noExternal: [IMTBL_WORKSPACE, '@uniswap/swap-router-contracts'],
+      treeshake: true,
+      esbuildPlugins: [
+        nodeModulesPolyfillPlugin({
+          globals: { Buffer: true, process: true },
+          modules: ['crypto', 'buffer', 'process'],
+        }),
+        replace({ __SDK_VERSION__: pkg.version }),
+      ],
+    },
+
+    // Node CJS + ESM bundle
+    {
+      entry: ['src/index.ts'],
+      outDir: 'dist/node',
+      platform: 'node',
+      format: ['esm', 'cjs'],
+      target: 'es2022',
+      minify: true,
+      bundle: true,
+      noExternal: [IMTBL_WORKSPACE, '@uniswap/swap-router-contracts'],
+      treeshake: true,
+      esbuildPlugins: [
+        replace({ __SDK_VERSION__: pkg.version }),
+      ],
+    },
+  ];
+});