Perceived lag in libraries

[tmickel]

These seem to load very slowly.

The basic problem is that they require tons of network requests currently. The sprite library has to request one JSON file per sprite, and then separately one SVG/PNG. The costume library has to request all the images (no JSON), but there are many of them.

Two ways we could address this are packaging the metadata into scratch-gui, or by implementing lazy loading.

[CosmicWebServices]

Lazy loading seems like a safe option to start out with but who says you cannot do both?

[rschamp]

Libraries were bundled in #34