UnhandledSchemeError `node:crypto`

[lowryrussell]

Bug description

Error deploying to Vercel on latest 4.4.0 release. It appears node:crypto was introduced in 4.4.0 (#329). I have locked my posthog-node version to 4.3.0 in the meantime as a workaround.

web:build: Failed to compile.
web:build: 
web:build: node:crypto
web:build: Module build failed: UnhandledSchemeError: Reading from "node:crypto" is not handled by plugins (Unhandled scheme).
web:build: Webpack supports "data:" and "file:" URIs by default.
web:build: You may need an additional plugin to handle "node:" URIs.
web:build: node:crypto
web:build: ../../node_modules/.pnpm/posthog-node@4.4.0/node_modules/posthog-node/lib/index.esm.js
web:build: ../../packages/plugins/analytics/posthog/src/index.ts
web:build: ../../packages/analytics/src/index.ts
web:build: ./components/analytics-provider.tsx
web:build: ./components/root-providers.tsx
web:build: 
web:build: 
web:build: > Build failed because of webpack errors

How to reproduce

1. Install latest 4.4.0 posthog-node package
2. Deploy to Vercel

Related sub-libraries

• All of them
• posthog-web
• posthog-node
• posthog-react-native

Additional context

Thank you for your bug report – we love squashing them!

[rafaeelaudibert]

Some extra content: Vercel Edge functions don't seem to support node:crypto, but normal functions do. You could use a normal node runtime as a workaround while we investigate

[juanpujol]

This broke deployment to Cloudflare Pages too. They don't support node:crypto.

[magnuslundin]

Same here. Vercel with edge runtime, currently with a locked posthog-node version. Awaiting the investigation.

[CyberClarence]

same here with cloudflare page and nextjs edge runtime

[CyberClarence]

i made it work by downgrading to a 1 month old version of posthog-node

bun i posthog-node@4.3.2 should do the job

[jokull]

This should work with Node 17+ and edge runtimes like cloudflare, vercel edge and bun. The library targets node 15+ but security support for that ended almost 4 years ago.

async function _hash(key: string, distinctId: string, salt: string = ''): Promise<number> {
  const data = new TextEncoder().encode(`${key}.${distinctId}${salt}`)
  const hashBuffer = await crypto.subtle.digest('SHA-1', data)
  const hashArray = Array.from(new Uint8Array(hashBuffer))
  const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('')
  return parseInt(hashHex.slice(0, 15), 16) / LONG_SCALE
}