return (float)rand() / RAND_MAX;
The problem compounds in pipelines. Each TransformStream adds another layer of promise machinery between source and sink. The spec doesn't define synchronous fast paths, so even when data is available immediately, the promise machinery still runs.
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Based on the relative timelines of these efforts, this meant we needed to continue to add new functionality to internal builds of the live-service game to meet certain publisher milestone requirements despite the fact that when these features would ultimately get released to the player it would be in the offline game. As a result, we needed to continue to build out and deploy new backend functionality in our internal development environments that would never actually need to be deployed to live player-facing production environments.
Source: Computational Materials Science, Volume 266