Parcel serve: Got unexpected null #6043

danieltroger · 2021-03-23T10:21:34Z

🐛 bug report

I've been getting this error when running parcel serve a couple times today

ℹ️ Server running at http://localhost:1234
✨ Built in 3.71s
Error: Got unexpected null
    at nullthrows ([project_dir]node_modules/nullthrows/nullthrows.js:7:15)
    at PackagedBundle.get filePath [as filePath] ([project_dir]node_modules/@parcel/core/lib/public/Bundle.js:367:38)
    at [project_dir]node_modules/@parcel/reporter-dev-server/lib/Server.js:272:104
    at Array.find (<anonymous>)
    at Server.serveBundle ([project_dir]node_modules/@parcel/reporter-dev-server/lib/Server.js:272:45)
    at Server.respond ([project_dir]node_modules/@parcel/reporter-dev-server/lib/Server.js:219:19)
    at [project_dir]node_modules/@parcel/reporter-dev-server/lib/Server.js:440:14
    at call ([project_dir]node_modules/connect/index.js:239:7)
    at next ([project_dir]node_modules/connect/index.js:183:5)
    at Function.handle ([project_dir]node_modules/connect/index.js:186:3) {
  framesToPop: 1
}
npm ERR! code 1
npm ERR! path [project_dir]
npm ERR! command failed
npm ERR! command sh -c ./build_scripts/serve

I've tried cleaning the cache and it didn't help. It happens after like the 2nd or 3rd request.

Unfortunately when I tried to actively reproduce it it stopped and has been working since :( I'll update with more info if it happens again.
I have a new laptop so maybe something's not set up correctly.

🎛 Configuration (.babelrc, package.json, cli command)

package.json

{
  "scripts": {
    "serve": "dotenv -e .env.development -- parcel serve --port 1234 --target dev --no-cache --no-hmr --dist-dir dev_dist/myscript src/main.ts",
  },
  "targets": {
    "dev": {
      "engines": {
        "browsers": "last 1 firefox version"
      }
    }
  },
  "devDependencies": {
    "@babel/cli": "latest",
    "@babel/core": "latest",
    "@babel/plugin-proposal-class-properties": "latest",
    "@babel/plugin-proposal-private-methods": "latest",
    "@babel/preset-typescript": "latest",
    "@parcel/babel-plugin-transform-runtime": "nightly",
    "@parcel/babel-preset-env": "nightly",
    "@parcel/optimizer-cssnano": "nightly",
    "@parcel/optimizer-htmlnano": "nightly",
    "@parcel/packager-css": "nightly",
    "@parcel/packager-html": "nightly",
    "@parcel/transformer-css": "nightly",
    "@parcel/transformer-html": "nightly",
    "@parcel/transformer-inline-string": "nightly",
    "@parcel/transformer-postcss": "nightly",
    "@parcel/transformer-posthtml": "nightly",
    "parcel": "nightly",
    "segfault-handler": "latest",
    "terser": "latest"
  },
  "dependencies": {
    "@babel/runtime": "latest",
    "@babel/runtime-corejs3": "latest",
    "dotenv-cli": "latest"
  }
}

.babelrc:

{
  "presets": ["@babel/preset-typescript", "@parcel/babel-preset-env"],
  "plugins": ["@parcel/babel-plugin-transform-runtime"]
}

🤔 Expected Behavior

Parcel serve should not crash.

😯 Current Behavior

It crashes sometimes.

💁 Possible Solution

Never crash.

🔦 Context

Wanted to continue developing my script and wondered why nothing happened.

💻 Code Sample

I'll post one if I manage to reproduce it with something that's not my whole code

🌍 Your Environment

Software	Version(s)
Parcel	2.0.0-nightly.630+ed726670
Node	v15.12.0
npm	7.6.3
Operating System	macOS Catalina 10.15.7 (19H15)

The text was updated successfully, but these errors were encountered:

danieltroger · 2021-03-23T10:25:13Z

It just happened again

ℹ️ Server running at http://localhost:1234
✨ Built in 3.60s
Error: Got unexpected null
    at nullthrows ([project_dir]/node_modules/nullthrows/nullthrows.js:7:15)
    at PackagedBundle.get filePath [as filePath] ([project_dir]/node_modules/@parcel/core/lib/public/Bundle.js:367:38)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:104
    at Array.find (<anonymous>)
    at Server.serveBundle ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:45)
    at Server.respond ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:219:19)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:440:14
    at call ([project_dir]/node_modules/connect/index.js:239:7)
    at next ([project_dir]/node_modules/connect/index.js:183:5)
    at Function.handle ([project_dir]/node_modules/connect/index.js:186:3) {
  framesToPop: 1
}
Error: Got unexpected null
    at nullthrows ([project_dir]/node_modules/nullthrows/nullthrows.js:7:15)
    at PackagedBundle.get filePath [as filePath] ([project_dir]/node_modules/@parcel/core/lib/public/Bundle.js:367:38)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:104
    at Array.find (<anonymous>)
    at Server.serveBundle ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:45)
    at Server.respond ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:219:19)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:440:14
    at call ([project_dir]/node_modules/connect/index.js:239:7)
    at next ([project_dir]/node_modules/connect/index.js:183:5)
    at Function.handle ([project_dir]/node_modules/connect/index.js:186:3) {
  framesToPop: 1
}
Error: Got unexpected null
    at nullthrows ([project_dir]/node_modules/nullthrows/nullthrows.js:7:15)
    at PackagedBundle.get filePath [as filePath] ([project_dir]/node_modules/@parcel/core/lib/public/Bundle.js:367:38)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:104
    at Array.find (<anonymous>)
    at Server.serveBundle ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:45)
    at Server.respond ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:219:19)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:440:14
    at call ([project_dir]/node_modules/connect/index.js:239:7)
    at next ([project_dir]/node_modules/connect/index.js:183:5)
    at Function.handle ([project_dir]/node_modules/connect/index.js:186:3) {
  framesToPop: 1
}
Error: Got unexpected null
    at nullthrows ([project_dir]/node_modules/nullthrows/nullthrows.js:7:15)
    at PackagedBundle.get filePath [as filePath] ([project_dir]/node_modules/@parcel/core/lib/public/Bundle.js:367:38)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:104
    at Array.find (<anonymous>)
    at Server.serveBundle ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:45)
    at Server.respond ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:219:19)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:440:14
    at call ([project_dir]/node_modules/connect/index.js:239:7)
    at next ([project_dir]/node_modules/connect/index.js:183:5)
    at Function.handle ([project_dir]/node_modules/connect/index.js:186:3) {
  framesToPop: 1
}
Error: Got unexpected null
    at nullthrows ([project_dir]/node_modules/nullthrows/nullthrows.js:7:15)
    at PackagedBundle.get filePath [as filePath] ([project_dir]/node_modules/@parcel/core/lib/public/Bundle.js:367:38)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:104
    at Array.find (<anonymous>)
    at Server.serveBundle ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:45)
    at Server.respond ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:219:19)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:440:14
    at call ([project_dir]/node_modules/connect/index.js:239:7)
    at next ([project_dir]/node_modules/connect/index.js:183:5)
    at Function.handle ([project_dir]/node_modules/connect/index.js:186:3) {
  framesToPop: 1
}
Error: Got unexpected null
    at nullthrows ([project_dir]/node_modules/nullthrows/nullthrows.js:7:15)
    at PackagedBundle.get filePath [as filePath] ([project_dir]/node_modules/@parcel/core/lib/public/Bundle.js:367:38)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:104
    at Array.find (<anonymous>)
    at Server.serveBundle ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:45)
    at Server.respond ([project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:219:19)
    at [project_dir]/node_modules/@parcel/reporter-dev-server/lib/Server.js:440:14
    at call ([project_dir]/node_modules/connect/index.js:239:7)
    at next ([project_dir]/node_modules/connect/index.js:183:5)
    at Function.handle ([project_dir]/node_modules/connect/index.js:186:3) {
  framesToPop: 1
}
npm ERR! code 1
npm ERR! path [project_dir]
npm ERR! command failed
npm ERR! command sh -c ./build_scripts/serve

danieltroger · 2021-03-23T10:33:45Z

Can't reproduce with a simple script, so it seems to only happen when using certain features.

It also happens in 2.0.0-nightly.629+39ff8330

mischnic · 2021-03-23T10:34:15Z

That code was recently changed, can you provide a complete code sample?

danieltroger · 2021-03-23T10:34:15Z

Btw, my .parcelrc:

{
	"extends": "@parcel/config-default",
	"optimizers": {
	    "bundle-text:*.css": ["@parcel/optimizer-cssnano"],
		  "bundle-text:*.html": ["@parcel/optimizer-htmlnano"]
	},
	"transformers": {
    "bundle-text:*.html": ["@parcel/transformer-inline-string"]
  }
}

danieltroger · 2021-03-23T10:35:59Z

That code was recently changed, can you provide a complete code sample?

It's kind of hard because my work isn't open source and it doesn't happen with everything. But I'll try to hack something together in hopes of triggering it :)

danieltroger · 2021-03-23T10:45:39Z

No luck in triggering it outside of my environment so far, but I printed the thing which doesn't have a filePath to console and it looks like this and seems to have something to do with css compression:

console: {
  id: '075c5f501f5241fc128d21da8d4878ed',
  hashReference: 'HASH_REF_075c5f501f5241fc128d21da8d4878ed',
  type: 'css',
  env: {
    id: '28bfbdbbbe851c4cbd6803ebbb8ba7c3',
    context: 'browser',
    engines: { browsers: 'last 1 firefox version' },
    includeNodeModules: true,
    outputFormat: 'global',
    isLibrary: false,
    shouldOptimize: false,
    shouldScopeHoist: false,
    sourceMap: {}
  },
  entryAssetIds: [ '2fbd23f723195c66e2096d4734e1622e' ],
  mainEntryId: '2fbd23f723195c66e2096d4734e1622e',
  pipeline: 'bundle-text',
  filePath: null,
  isEntry: false,
  isInline: true,
  isSplittable: true,
  isPlaceholder: false,
  target: {
    name: 'dev',
    distDir: '[project_dir]/dev_dist/directory',
    distEntry: 'output_filename.js',
    publicUrl: '/',
    env: {
      id: '28bfbdbbbe851c4cbd6803ebbb8ba7c3',
      context: 'browser',
      engines: [Object],
      includeNodeModules: true,
      outputFormat: 'global',
      isLibrary: false,
      shouldOptimize: false,
      shouldScopeHoist: false,
      sourceMap: {}
    },
    loc: {
      filePath: '[project_dir]/package.json',
      start: [Object],
      end: [Object]
    }
  },
  name: 'output_filename.HASH_REF_075c5f501f5241fc128d21da8d4878ed.css',
  displayName: 'output_filename.[hash].css',
  publicId: 'dT9Xa',
  stats: { size: 1547, time: 0 }
}

I have done this in node_modules/@parcel/core/lib/public/Bundle.js

get filePath() {
    console.log(_classPrivateFieldGet(this, _bundle3));
    return (0, _nullthrows().default)(_classPrivateFieldGet(this, _bundle3).filePath);
  }

danieltroger · 2021-03-23T12:18:52Z

Put this into styling.css:

body {
  background: red;
}

and this into main.ts

// @ts-ignore
import styling from "bundle-text:./styling.css";

console.log(styling);

I got that to crash once but after that never again. Maybe it crashes for you too the first time which would satisfy being a reproduction :)

mischnic · 2021-03-24T23:30:19Z

I just got this error as well, looks like it was caused by an inline CSS bundle that was created because of <style></style> tags.

Inline bundles do indeed not have a filepath ...

danieltroger · 2021-03-25T07:10:05Z

Great that you could reproduce! But I'm only using bundle-text and still get the error. Maybe the filePath is lost somewhere during processing?

mischnic · 2021-03-25T09:01:00Z

It's intentional that inline bundles don't have a file path, as they are never written to disk directly (and namer plugins aren't invoked for them).

So the fix would be adding .filter(b => !b.isInline) here:

parcel/packages/reporters/dev-server/src/Server.js

Line 209 in dea272f

.getBundles()

ittaibaratz · 2021-04-02T06:12:35Z

We are seeing that issue too I believe:

Error: Got unexpected null
     at nullthrows (/Users/leclair/dev/unified-shell/node_modules/nullthrows/nullthrows.js:7:15)
     at PackagedBundle.get filePath [as filePath] (/Users/leclair/dev/unified-shell/node_modules/@parcel/core/lib/public/Bundle.js:367:38)
     at /Users/leclair/dev/unified-shell/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:104
     at Array.find (<anonymous>)
     at Server.serveBundle (/Users/leclair/dev/unified-shell/node_modules/@parcel/reporter-dev-server/lib/Server.js:272:45)
     at Server.respond (/Users/leclair/dev/unified-shell/node_modules/@parcel/reporter-dev-server/lib/Server.js:219:19)
     at /Users/leclair/dev/unified-shell/node_modules/@parcel/reporter-dev-server/lib/Server.js:441:14
     at call (/Users/leclair/dev/unified-shell/node_modules/@parcel/reporter-dev-server/node_modules/connect/index.js:239:7)
     at next (/Users/leclair/dev/unified-shell/node_modules/@parcel/reporter-dev-server/node_modules/connect/index.js:183:5)
     at Function.handle (/Users/leclair/dev/unified-shell/node_modules/@parcel/reporter-dev-server/node_modules/connect/index.js:186:3) {
   framesToPop: 1
 }

danmarshall · 2021-12-16T23:50:27Z

I got this error when I had accidentally overwritten my import with parcel output, which made it no longer a module.

3A43Mka · 2022-12-06T11:02:13Z

In my case, I had to delete .parcel-cache folder, after that it worked without any issues.

gxy5202 · 2023-02-01T16:12:59Z

In my case, I had to delete .parcel-cache folder, after that it worked without any issues.

me too. after deleting cache folder, all gose well

darklordofgnar · 2024-03-11T18:35:55Z

thanks for your help on this, deleting the .parcel-cache folder cleared any issues for me as well

Aneeshaik · 2024-06-10T16:19:34Z

thank you so much for help, I am trying to fix this from yesterday now it also worked for me after deleting .parcel-cache

KaushikJallam · 2024-06-16T13:50:53Z

Deleting the parcel-cache will work

fatdarkness6 · 2024-06-20T22:50:39Z

Deleting the parcel-cache will work

thanks a lot . it worked for me after deleting parcel-cache

AmanKumar-09 · 2024-06-22T09:38:47Z

I have getting this error how can I solve this error please help 🙏🏿
PS C:\Users\Aman\OneDrive\Desktop\Namaste-React\Food-App> npm start

food-app@1.0.0 start
parcel index.html

Error: Got unexpected null
at nullthrows (C:\Users\Aman\OneDrive\Desktop\Namaste-React\Food-App\node_modules\nullthrows\nullthrows.js:7:15)
at RequestGraph.invalidateOptionNodes (C:\Users\Aman\OneDrive\Desktop\Namaste-React\Food-App\node_modules@parcel\core\lib\RequestTracker.js:248:44)
at loadRequestGraph (C:\Users\Aman\OneDrive\Desktop\Namaste-React\Food-App\node_modules@parcel\core\lib\RequestTracker.js:872:18)
at async RequestTracker.init (C:\Users\Aman\OneDrive\Desktop\Namaste-React\Food-App\node_modules@parcel\core\lib\RequestTracker.js:822:17)
at async Parcel._init (C:\Users\Aman\OneDrive\Desktop\Namaste-React\Food-App\node_modules@parcel\core\lib\Parcel.js:188:28)
at async Parcel.watch (C:\Users\Aman\OneDrive\Desktop\Namaste-React\Food-App\node_modules@parcel\core\lib\Parcel.js:260:7)
at async run (C:\Users\Aman\OneDrive\Desktop\Namaste-React\Food-App\node_modules\parcel\lib\cli.js:283:9) {
framesToPop: 1
}

mohanbawane · 2024-09-11T06:46:44Z

I have getting this error how can I solve this error please give me the solution

Error: Got unexpected undefined
at nullthrows (C:\Users\Mohan Bawane\OneDrive\Desktop\685678\Own namaste\node_modules\nullthrows\nullthrows.js:7:15)
at RequestGraph.invalidateOptionNodes (C:\Users\Mohan Bawane\OneDrive\Desktop\685678\Own namaste\node_modules@parcel\core\lib\RequestTracker.js:248:44)
at loadRequestGraph (C:\Users\Mohan Bawane\OneDrive\Desktop\685678\Own namaste\node_modules@parcel\core\lib\RequestTracker.js:872:18)
at async RequestTracker.init (C:\Users\Mohan Bawane\OneDrive\Desktop\685678\Own namaste\node_modules@parcel\core\lib\RequestTracker.js:822:17)
at async Parcel._init (C:\Users\Mohan Bawane\OneDrive\Desktop\685678\Own namaste\node_modules@parcel\core\lib\Parcel.js:188:28)
at async Parcel.watch (C:\Users\Mohan Bawane\OneDrive\Desktop\685678\Own namaste\node_modules@parcel\core\lib\Parcel.js:260:7)
at async run (C:\Users\Mohan Bawane\OneDrive\Desktop\685678\Own namaste\node_modules\parcel\lib\cli.js:283:9) {
framesToPop: 1
}

mischnic changed the title ~~Parcel serve breaks when getting a request~~ Parcel serve: Got unexpected null Mar 24, 2021

mischnic added 🐛 Bug ✨ Parcel 2 labels Mar 24, 2021

martinsvoboda mentioned this issue Mar 31, 2021

Fix dev server serving inline bundles #6067

Merged

3 tasks

mischnic mentioned this issue Mar 31, 2021

[Parcel v2] Error: Got unexpected null when using inline styles #6068

Closed

DeMoorJasper closed this as completed in #6067 Apr 2, 2021

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Parcel serve: Got unexpected null #6043

Parcel serve: Got unexpected null #6043

danieltroger commented Mar 23, 2021

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danieltroger commented Mar 25, 2021

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ittaibaratz commented Apr 2, 2021

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3A43Mka commented Dec 6, 2022

gxy5202 commented Feb 1, 2023 •

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darklordofgnar commented Mar 11, 2024

Aneeshaik commented Jun 10, 2024

KaushikJallam commented Jun 16, 2024 •

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fatdarkness6 commented Jun 20, 2024

AmanKumar-09 commented Jun 22, 2024

mohanbawane commented Sep 11, 2024

Parcel serve: Got unexpected null #6043

Parcel serve: Got unexpected null #6043

Comments

danieltroger commented Mar 23, 2021

🐛 bug report

🎛 Configuration (.babelrc, package.json, cli command)

🤔 Expected Behavior

😯 Current Behavior

💁 Possible Solution

🔦 Context

💻 Code Sample

🌍 Your Environment

danieltroger commented Mar 23, 2021

danieltroger commented Mar 23, 2021

mischnic commented Mar 23, 2021

danieltroger commented Mar 23, 2021

danieltroger commented Mar 23, 2021

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mischnic commented Mar 24, 2021 • edited Loading

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mischnic commented Mar 25, 2021

ittaibaratz commented Apr 2, 2021

danmarshall commented Dec 16, 2021

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darklordofgnar commented Mar 11, 2024

Aneeshaik commented Jun 10, 2024

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fatdarkness6 commented Jun 20, 2024

AmanKumar-09 commented Jun 22, 2024

mohanbawane commented Sep 11, 2024

danieltroger commented Mar 23, 2021 •

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mischnic commented Mar 24, 2021 •

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gxy5202 commented Feb 1, 2023 •

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KaushikJallam commented Jun 16, 2024 •

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