Load JSON into IndexedDB in JS if we exceed 50 MB

[Transfusion]

json]$ ls -lah
total 30M
drwxrwxr-x. 2 transfusion transfusion 4.0K Jan 30 19:51 .
drwxrwxr-x. 4 transfusion transfusion 4.0K Jan 27 03:13 ..
-rw-rw-r--. 1 transfusion transfusion 3.2K Jan 30 19:50 baseRadicals.json
-rw-rw-r--. 1 transfusion transfusion 1.5M Jan 30 19:50 forwardMap.json
-rw-rw-r--. 1 transfusion transfusion   73 Jan 30 19:50 processedIDSMetadata.json
-rw-rw-r--. 1 transfusion transfusion 5.5M Jan 30 19:50 readings.json
-rw-rw-r--. 1 transfusion transfusion  21M Jan 30 19:50 reverseMap.json
-rw-rw-r--. 1 transfusion transfusion 873K Jan 30 19:50 strokeCount.json
-rw-rw-r--. 1 transfusion transfusion 576K Jan 30 19:50 variantsIslandsLookup.json
-rw-rw-r--. 1 transfusion transfusion 298K Jan 30 19:50 variantsMap.json

https://stackoverflow.com/questions/60376429/where-in-my-pwa-should-i-be-loading-a-somewhat-large-json-file
iOS has a 50 MiB cache limit

https://developers.google.com/web/ilt/pwa/live-data-in-the-service-worker

For example HTML, CSS, and JS files should be stored in the cache, while JSON data should be stored in IndexedDB.