Using pino logger with sveltekit

[bergser]

According to pino docs https://github.com/pinojs/pino/blob/master/docs/bundling.md

Due to its internal architecture based on Worker Threads, it is not possible to bundle Pino without generating additional files.

In particular, a bundler must ensure that the following files are also bundled separately...

What is the right way how to include them in sveltekit build?

[madkarlsson]

Just passed by here as I look for the same answer. It seems to work out of the box, tried both node and the static adapter with no problems

[PlkMarudny]

Does not work for me

[zuk]

It works fine with vite dev but things get ugly with vite build. For example:

node:internal/event_target:1016
  process.nextTick(() => { throw err; });
                           ^
Error: Cannot find module '…/.svelte-kit/output/server/chunks/lib/worker.js'

[zuk]

I was eventually able to get vite build working with pinot with some absolutely atrocious globalThis. overrides:

import * as path from 'path'
import { fileURLToPath } from 'url'

const pathToPino = path.resolve('<your relative path>/node_modules/pino')

globalThis.__bundlerPathsOverrides = {
    'pino-worker': pathToPino+'/lib/worker.js',
    'pino-pipeline-worker': pathToPino+'/lib/worker-pipeline.js'
}

I also use pino-pretty and pino-opentelemetry-transport, so I needed these additional overrides:

globalThis.__bundlerPathsOverrides['pino-pretty'] =  pathToPino+'/../pino-pretty/index.js
globalThis.__bundlerPathsOverrides['pino-opentelemetry-transport'] = pathToPino+'/../pino-opentelemetry-transport/pino-opentelemetry-transport.js'

You may also need to add this for thread-stream:

globalThis.__bundlerPathsOverrides['thread-stream-worker'] = pathToPino+'/../thread-stream/lib/worker.js'

[derheld42]

I just tried @zuk's suggestion and it started working.. but then I removed @zuk's suggestion and looks like it's not needed anymore with these packages:
[email protected]
@sveltejs/[email protected]
@sveltejs/[email protected]
[email protected]
[email protected].
I only had a single log line in a client/browser +page.svelte file to test so far.

[rhscjohn-dev]

Pino runs fine in dev and preview mode using vite but bombs in production using node.

PS D:\Users\johni\Projects\npvr-client-ts> node build
file:///D:/Users/johni/Projects/npvr-client-ts/build/server/chunks/pino-DlUuQO6b.js:3265
            target = bundlerOverrides['pino-worker'] || join(__dirname, 'worker.js');
                                                             ^

ReferenceError: __dirname is not defined in ES module scope
This file is being treated as an ES module because it has a '.js' file extension and 'D:\Users\johni\Projects\npvr-client-ts\package.json' contains "type": "module". To treat it as a CommonJS script, rename it to use the '.cjs' file extension.

@sveltejs/adapter-auto": "^3.0.0",
"@sveltejs/adapter-node": "^5.0.1",
"@sveltejs/kit": "^2.0.8",
"@sveltejs/vite-plugin-svelte": "^3.0.2",
"pino": "^9.1.0",
"pino-pretty": "^11.0.0",
"svelte": "^4.2.10",
"vite": "^5.2.12",

Node.js v20.11.1