Allow for non-string objects in the `content_security_policy` field.

[buck-ross]

In order to support the ongoing effort to migrate to Manifest v3 (see #107), the content_security_policy field of the manifest file needs to be formatted as an object, instead of a string like in the v2 specification.

Right now, there are a number of lines in the manifest processing script which operate under the assumption that the field will always contain a string value. This section will need to be re-written in order to accommodate object values when using the v3 spec.

Honestly, this doesn't seem like a very difficult thing to fix. I'd be happy to do in myself in a PR later this week.

[takayukioda]

Any update on this issue?

[buck-ross]

@takayukioda I fixed this issue in #131, which was approved, but hasn't been merged yet. I haven't heard anything back from the dev team, so my guess would be that they're busy with other things. Hopefully they can address this soon.

[Lemon-cxh]

can this?

module.exports = {
  // ...
  pluginOptions: {
    browserExtension: {
      // ...
      manifestTransformer: (manifest) => {
        manifest.content_security_policy = {"extension_pages": "script-src 'self'; object-src 'self';"}
        return manifest;
      }
    }
  }
}

[buck-ross]

@Lemon-cxh I'm not familiar with the manifestTransformer syntax, but on the surface of it, that looks like it could be an ok work-around. The one issue is that when build in development mode, script-src: 'self'; would need to become script-src: 'self' 'unsafe-eval';.

That said, I really don't think we should settle for a work-around solution here. The community is moving to manifest V3, and so this project should provide proper support for it, instead of requiring devs to work around a lack of support for it.