`pnpm wxt submit` to AMO does not work in Node.js 24

[hyunbinseo]

Describe the bug

pnpm wxt submit seems to fail on Node.js 24 with a 415 Unsupported Media Type error.

Request: https://addons.mozilla.org/api/v5/addons/upload/

Response: {
  "_data": {
    "detail": "Unsupported media type \"text/plain;charset=UTF-8\" in request."
  }
}

Error:  [POST] "https://addons.mozilla.org/api/v5/addons/upload/": 415 Unsupported Media Type
  at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
  at async $fetch2 (node_modules/.pnpm/[email protected]/node_modules/ofetch/dist/shared/ofetch.d8adb063.cjs:322:15)
  at async AddonsApi.uploadCreate (node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3228:12)
  at async FirefoxAddonStore.uploadAndPollValidation (node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3347:19)
  at async FirefoxAddonStore.submit (node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3325:20)
  at async Task.task [as taskFn] (node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3524:11)
  at async Task.run (node_modules/.pnpm/[email protected]/node_modules/listr2/dist/index.cjs:2146:11)

✖ Firefox Addon Store [FAILED: [POST] "https://addons.mozilla.org/api/v5/addons/upload/": 415 Unsupported Media Type]

Error:  Submissions failed: 1
  at submit (node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3544:11)
  at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
  at async CAC.<anonymous> (node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3936:5)

  [cause]: [ [ 'firefox',
    { success: false,
      err:
       FetchError: [POST] "https://addons.mozilla.org/api/v5/addons/upload/": 415 Unsupported Media Type
           at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
           at async $fetch2 (/home/runner/work/better-surf/better-surf/node_modules/.pnpm/[email protected]/node_modules/ofetch/dist/shared/ofetch.d8adb063.cjs:322:15)
           at async AddonsApi.uploadCreate (/home/runner/work/better-surf/better-surf/node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3228:12)
           at async FirefoxAddonStore.uploadAndPollValidation (/home/runner/work/better-surf/better-surf/node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3347:19)
           at async FirefoxAddonStore.submit (/home/runner/work/better-surf/better-surf/node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3325:20)
           at async Task.task [as taskFn] (/home/runner/work/better-surf/better-surf/node_modules/.pnpm/[email protected]/node_modules/publish-browser-extension/dist/cli.cjs:3524:11)
           at async Task.run (/home/runner/work/better-surf/better-surf/node_modules/.pnpm/[email protected]/node_modules/listr2/dist/index.cjs:2146:11) } ] ]

Reproduction

I was originally using Node.js 23 and have bumped to 24 which caused the issue.

Works fine on Node.js 22.

+ node-version: 24
- node-version: 22

Github Actions configuration:

name: Submit to Addons.mozilla.org

on: workflow_dispatch

jobs:
  submit:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: pnpm/action-setup@v4

      - uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: 'pnpm'

      - name: Install dependencies
        run: pnpm install

      - name: Zip extensions
        run: pnpm zip:firefox

      - name: Submit to stores
        run: |
          pnpm wxt submit \
            --firefox-zip .output/*-firefox.zip --firefox-sources-zip .output/*-sources.zip
        env:
          FIREFOX_EXTENSION_ID: ${{ secrets.FIREFOX_EXTENSION_ID }}
          FIREFOX_JWT_ISSUER: ${{ secrets.FIREFOX_JWT_ISSUER }}
          FIREFOX_JWT_SECRET: ${{ secrets.FIREFOX_JWT_SECRET }}

Steps to reproduce

No response

System Info

Reference Github Actions configuration

Used Package Manager

pnpm

Validations

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• [x] Read the docs.
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• [x] The provided reproduction is a minimal reproducible example of the bug.

[rutmanz]

This also occurs locally for me using node 24 and the bun package manager (not bun runtime). Switching to node 21 to upload resolves the issue

[aklinker1]

Thanks for the report, I'll try and fix it later today.

[Crevitus]

Any update on this? Getting the same issue with npm. Switched from using node 22 to node 24.