@Hayden Hoang Yes, it is running nodejs on fly.io. The stack trace isn't anything besides that console error I mentioned before:

Uncaught TypeError: Failed to resolve module specifier "crypto". Relative references must start with either "/", "./", or "../".

I'll show you the difference with a quick video of the difference running locally and when it gets sent to my staging app. It has been a second since I touched the vite.config.ts but this is what it should have been liked when Algolia worked.

import { vitePlugin as remix } from '@remix-run/dev'
import { sentryVitePlugin } from '@sentry/vite-plugin'
import { glob } from 'glob'
import { flatRoutes } from 'remix-flat-routes'
import { defineConfig } from 'vite'
import { remixDevTools } from 'remix-development-tools'
import { envOnlyMacros } from 'vite-env-only'
import { cjsInterop } from 'vite-plugin-cjs-interop'

const MODE = process.env.NODE_ENV

export default defineConfig({
	//WARN: reason why <https://threads.typesense.org/2Lb60>
	// ssr: {
	// 	noExternal: ['typesense-instantsearch-adapter'],
	// },
	build: {
		cssMinify: MODE === 'production',

		rollupOptions: {
			external: [/node:.*/, 'stream', 'crypto', 'fsevents', 'posthog'],
		},

		assetsInlineLimit: (source: string) => {
			if (
				source.endsWith('sprite.svg') ||
				source.endsWith('favicon.svg') ||
				source.endsWith('apple-touch-icon.png')
			) {
				return false
			}
		},

		sourcemap: true,
	},
	server: {
		watch: {
			ignored: ['**/playwright-report/**'],
		},
	},
	plugins: [
		envOnlyMacros(),
		remixDevTools(),
		cjsInterop({
			dependencies: ['typesense-instantsearch-adapter'],
		}),
		remix({
			ignoredRouteFiles: ['**/*'],
			serverModuleFormat: 'esm',
			routes: async defineRoutes => {
				return flatRoutes('routes', defineRoutes, {
					ignoredRouteFiles: [
						'.*',
						'**/*.css',
						'**/*.test.{js,jsx,ts,tsx}',
						'**/__*.*',
						// This is for server-side utilities you want to colocate
						// next to your routes without making an additional
						// directory. If you need a route that includes "server" or
						// "client" in the filename, use the escape brackets like:
						// my-route.[server].tsx
						'**/*.server.*',
						'**/*.client.*',
					],
				})
			},
		}),
		process.env.SENTRY_AUTH_TOKEN
			? sentryVitePlugin({
					disable: MODE !== 'production',
					authToken: process.env.SENTRY_AUTH_TOKEN,
					org: process.env.SENTRY_ORG,
					project: process.env.SENTRY_PROJECT,
					release: {
						name: process.env.COMMIT_SHA,
						setCommits: {
							auto: true,
						},
					},
					sourcemaps: {
						filesToDeleteAfterUpload: await glob([
							'./build/**/*.map',
							'.server-build/**/*.map',
						]),
					},
				})
			: null,
	],
})

I have tried many iterations to try and make this work. Mainly the steps recommended to try and at the remix link here: https://remix.run/docs/en/main/guides/vite#esm--cjs When trying to make it work with cjs-interop plugin mentioned it wouldn't even run and I get this error:

11:21:53 PM [vite] Error when evaluating SSR module /node_modules/typesense-instantsearch-adapter/lib/TypesenseInstantsearchAdapter.js:
|- ReferenceError: require is not defined
    at eval (/Users/vonkoff/GoodUnionJobs/remix-guj/node_modules/typesense-instantsearch-adapter/lib/TypesenseInstantsearchAdapter.js:5:30)
    at instantiateModule (file:///Users/vonkoff/GoodUnionJobs/remix-guj/node_modules/vite/dist/node/chunks/dep-BzOvws4Y.js:52870:11)

11:21:53 PM [vite] Error when evaluating SSR module /app/routes/_marketing+/index.tsx:
|- ReferenceError: require is not defined
    at eval (/Users/vonkoff/GoodUnionJobs/remix-guj/node_modules/typesense-instantsearch-adapter/lib/TypesenseInstantsearchAdapter.js:5:30)
    at instantiateModule (file:///Users/vonkoff/GoodUnionJobs/remix-guj/node_modules/vite/dist/node/chunks/dep-BzOvws4Y.js:52870:11)

11:21:53 PM [vite] Error when evaluating SSR module virtual:remix/server-build:
|- ReferenceError: require is not defined
    at eval (/Users/vonkoff/GoodUnionJobs/remix-guj/node_modules/typesense-instantsearch-adapter/lib/TypesenseInstantsearchAdapter.js:5:30)
    at instantiateModule (file:///Users/vonkoff/GoodUnionJobs/remix-guj/node_modules/vite/dist/node/chunks/dep-BzOvws4Y.js:52870:11)

ReferenceError: require is not defined
ReferenceError: require is not defined
    at eval (/Users/vonkoff/GoodUnionJobs/remix-guj/node_modules/typesense-instantsearch-adapter/lib/TypesenseInstantsearchAdapter.js:5:30)
    at instantiateModule (file:///Users/vonkoff/GoodUnionJobs/remix-guj/node_modules/vite/dist/node/chunks/dep-BzOvws4Y.js:52870:11)