Webextensions-examples/favourite-colour storage.managed doesn't work

Add-ons Development
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1

On Linux, I try to run the example extension at: https://github.com/mdn/webextensions-examples/tree/main/favourite-colour

Followed https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Native_manifests#manifest_location and created file:
~/.mozilla/managed-storage/favourite-colour-examples@mozilla.org.json

But when running with web-ext run -f deved --devtools, the developer tools’s console still logs the error:

Uncaught (in promise) Error: Managed storage manifest not found

How do I get the feature storage.managed to work? Thank you.

1 Like
2

I think I’ve found the problem.

webextensions-examples-main/favourite-colour/manifest.json

"browser_specific_settings": {
  "gecko": {
      "id": "favourite-colour-examples@mozilla.org",
      "strict_min_version": "57.0a1"
  }
}

British spelling of color/colour in:
"id": "favourite-colour-examples@mozilla.org"

webextensions-examples-main/favourite-colour/README.md

    {
      "name":  "favourite-colour-examples@mozilla.org",
      "description": "ignored",
      "type": "storage",
      "data": {
        "colour": "management thinks it should be blue!"
      }
    }

British spelling of color/colour in:
"name": "favourite-colour-examples@mozilla.org"
"colour": "management thinks it should be blue!"

Native manifests > Managed storage manifests

{
  "name": "favourite-color-examples@mozilla.org",
  "description": "ignored",
  "type": "storage",
  "data": {
    "color": "management thinks it should be blue!"
  }
}

American spelling of color/colour in:
“name”: “favourite-color-examples@mozilla.org”
“color”: “management thinks it should be blue!”

3

On Github, both the extension and the example file where I copied (favourite-colour-examples@mozilla.org.json) use British spelling so I don’t think that’s the problem.

But I will try to convert all of them into American spelling and see, thank you.

Edit: that indeed works! But I don’t understand! The said example extension doesn’t contain a single “color” word.