perf(typescript-language): reuse one program per project instead of per file - #3257

perf(typescript-language): reuse one program per project instead of per file#3257

JoshuaKGoldberg wants to merge 2 commits into

mainflint-fyi/flint:mainfrom

perf/hoist-program-per-projectflint-fyi/flint:perf/hoist-program-per-projectCopy head branch name to clipboard