In the context of web programming. What is a shim repository?
For instance, when I search "handlebars" in the bower package search page one of the result is:
"Shim repository for Handlebars.js"
I don't think "shim repository" is a standardized term in web programming - its just how that specific project - the Components project - describes the repositories they create as stand-ins for those popular 3rd-party components.
Those repositories are "shims" in the sense that they adapt the releases of those popular components into a standard format needed by the Components project to support the package managers that the Components project targets.
来源：https://stackoverflow.com/questions/26301475/what-is-a-shim-repository