fix(audience): address PR review findings for npm publishability

- Declare esbuild-plugin-replace and esbuild-plugins-node-modules-polyfill
  as explicit devDependencies (were phantom deps via root hoisting)
- Remove @uniswap/swap-router-contracts from noExternal (copy-paste
  artifact from root tsup config — audience has no uniswap dependency)
- Add *.prepack-backup to .gitignore (prevents accidental commit if
  pnpm pack fails between prepack and postpack)
- Clean up leftover per-file .d.ts after rollup bundles them into
  dist/types/index.d.ts (reduces tarball size)
- Use import attribute `with` instead of deprecated `assert` syntax
  (Node 22+ deprecation)

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

Author: ImmutableJeffrey

.gitignore

@@ -34,4 +34,6 @@ examples/**/test-results/
 
 tests/**/.env
 tests/**/playwright-report/
-tests/**/test-results/
+tests/**/test-results/
+
+*.prepack-backup

packages/audience/sdk/package.json

@@ -12,6 +12,8 @@
     "@swc/jest": "^0.2.37",
     "@types/jest": "^29.5.12",
     "@types/node": "^22.10.7",
+    "esbuild-plugin-replace": "^1.4.0",
+    "esbuild-plugins-node-modules-polyfill": "^1.6.7",
     "eslint": "^8.56.0",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.4.3",
@@ -52,7 +54,7 @@
   "scripts": {
     "build": "pnpm transpile && pnpm typegen",
     "transpile": "tsup --config tsup.config.js",
-    "typegen": "tsc --customConditions default --emitDeclarationOnly --outDir dist/types && rollup -c rollup.dts.config.js",
+    "typegen": "tsc --customConditions default --emitDeclarationOnly --outDir dist/types && rollup -c rollup.dts.config.js && find dist/types -name '*.d.ts' ! -name 'index.d.ts' -delete",
     "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",

packages/audience/sdk/tsup.config.js

@@ -8,7 +8,7 @@
 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' };
+import pkg from './package.json' with { type: 'json' };
 
 const IMTBL_WORKSPACE = /^@imtbl\//;
 
@@ -44,7 +44,7 @@ export default defineConfig((options) => {
       target: 'es2022',
       minify: true,
       bundle: true,
-      noExternal: [IMTBL_WORKSPACE, '@uniswap/swap-router-contracts'],
+      noExternal: [IMTBL_WORKSPACE],
       treeshake: true,
       esbuildPlugins: [
         nodeModulesPolyfillPlugin({
@@ -64,7 +64,7 @@ export default defineConfig((options) => {
       target: 'es2022',
       minify: true,
       bundle: true,
-      noExternal: [IMTBL_WORKSPACE, '@uniswap/swap-router-contracts'],
+      noExternal: [IMTBL_WORKSPACE],
       treeshake: true,
       esbuildPlugins: [
         replace({ __SDK_VERSION__: pkg.version }),