Cloudflare Developers•13mo ago

Using connect() API in Pages

Hi team. I have a Pages function that talks directly to a Postgres DB using the new connect() API (detailed here: https://developers.cloudflare.com/workers/databases/connect-to-postgres). The code works fine in a Worker and also when running Pages locally. But when trying to deploy to CF, I get node compatibility errors. I have the nodejs-compat flag set. What am I missing?

14:22:33.131    ✘ [ERROR] Could not resolve "stream"
14:22:33.131    
14:22:33.131        ../node_modules/pgpass/node_modules/split2/index.js:19:30:
14:22:33.131          19 │ const { Transform } = require('stream')
14:22:33.132             ╵                               ~~~~~~~~
14:22:33.132    
14:22:33.132      The package "stream" wasn't found on the file system but is built into node.
14:22:33.132      Add the "nodejs_compat" compatibility flag to your Pages project to enable Node.js compatibility.
14:22:33.132    
14:22:33.133    
14:22:33.133    ✘ [ERROR] Build failed with 12 errors:
14:22:33.133    
14:22:33.134      ../node_modules/pg-connection-string/index.js:72:77: ERROR: Could not resolve "fs"
14:22:33.134      ../node_modules/pg/lib/connection-parameters.js:3:18: ERROR: Could not resolve "dns"
14:22:33.134      ../node_modules/pg/lib/connection.js:3:18: ERROR: Could not resolve "net"
14:22:33.134      ../node_modules/pg/lib/crypto/utils-legacy.js:5:27: ERROR: Could not resolve "crypto"
14:22:33.134      ../node_modules/pg/lib/crypto/utils.js:10:27: ERROR: Could not resolve "crypto"

14:22:33.131    ✘ [ERROR] Could not resolve "stream"
14:22:33.131    
14:22:33.131        ../node_modules/pgpass/node_modules/split2/index.js:19:30:
14:22:33.131          19 │ const { Transform } = require('stream')
14:22:33.132             ╵                               ~~~~~~~~
14:22:33.132    
14:22:33.132      The package "stream" wasn't found on the file system but is built into node.
14:22:33.132      Add the "nodejs_compat" compatibility flag to your Pages project to enable Node.js compatibility.
14:22:33.132    
14:22:33.133    
14:22:33.133    ✘ [ERROR] Build failed with 12 errors:
14:22:33.133    
14:22:33.134      ../node_modules/pg-connection-string/index.js:72:77: ERROR: Could not resolve "fs"
14:22:33.134      ../node_modules/pg/lib/connection-parameters.js:3:18: ERROR: Could not resolve "dns"
14:22:33.134      ../node_modules/pg/lib/connection.js:3:18: ERROR: Could not resolve "net"
14:22:33.134      ../node_modules/pg/lib/crypto/utils-legacy.js:5:27: ERROR: Could not resolve "crypto"
14:22:33.134      ../node_modules/pg/lib/crypto/utils.js:10:27: ERROR: Could not resolve "crypto"

5 Replies

deanmauro•13mo ago

Yes, I'm using the latest v8.11.0 It works locally with the deprecated --node-compat flag. I'm not having any luck setting the nodejs-compat compatibility-flag. It doesn't seem to have an effect. Is node compatibility supported in Pages functions?

Walshy•13mo ago

It requires the wrangler node compat flag not the compatibility date node compat flag (yes it's confusing notlikemeow

) Publish/UI doesn't have --node-compat

deanmauro•13mo ago

If I'm understanding correctly, that means pg isn't supported in Pages yet since the --node-compat flag isn't available? It will only work in a worker?

Walshy•13mo ago

You could do the node pollyfills yourself but natively with wrangler, yes hopefully it'll just work soon with the native node compat

deanmauro•13mo ago

Okay that's not necessarily so bad. I can either add polyfills for the pages functions or bind a worker. Do you have any guidance or docs on hand for adding polyfills in pages?

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Using connect() API in Pages