Unable to mark script as CC-BY-SA-4.0: Unrecognized license tag

[j . cogle]

Hello,

In a page I control, I am unable to mark an inline script as CC-BY-SA-4.0 in a 
way that LibreJS can recognize. With the script shown in the below snippet 
(i.e. without a magnet link), LibreJS blocks the script, saying:
>  Unrecognized license tag: "// @license CC-BY-SA-4.0 // https://
stackoverflow.com/a/56550819"

JS script:
>// @license CC-BY-SA-4.0
>
>               // https://stackoverflow.com/a/56550819
>               function detectColorScheme() {
>                       var theme = "light"; //default to light
> ...[JS elided for brevity]
>               detectColorScheme();
>
>               // @license-end

As you can see, the "@license" comment has no magnet link, since there is not 
one published at https://www.gnu.org/software/librejs/manual/html_node/
Setting-Your-JavaScript-Free.html#License-tags

If I instead add a magnet link from a license that _does_ have one (e.g. 
AGPL-3.0), then LibreJS recognizes the snippet as AGPL-3.0:

LibreJS
>  Recognized license: "GNU AFFERO GENERAL PUBLIC LICENSE version 3".

JS script:
>// @license magnet:?xt=urn:btih:
0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt CC-BY-SA-4.0
>
>               // https://stackoverflow.com/a/56550819
>               function detectColorScheme() {
>                       var theme = "light"; //default to light
>...

How can I get LibreJS to recognize this script's CC-BY-SA-4.0 license?

Best regards,
j