Paul Gschwendtner
4a3d39cd5a
Currently there can be cases, exlusively in 3P, where multiple tsconfig projects have overlap of source files. This is the default setup of new CLI applications as well. When this is the case, Tsurge will treat each tsconfig as an isolated compilation unit (given the concepts and mental model to support scalable batching). This is wrong though, and the same `.ts` source file can appear in two migration invocations; resulting in duplicate replacements or analysis (depending on the migration). We've worked around this problem in the past by deduplicating replacements, or migrating to an ID-based approach with natural deduplication. This worked, but it's just working around the root cause. This commit attempts to fix the root cause by adjusting Tsurge to ensure that no source file ever appears in two compilation units. This is naively achieved by not adding a source file to a migration unit, if it was part of a previous one. This is expected to be fine given the nature of Tsurge migrations that are built to operate on isolated pieces anyway— so it shouldn't be problematic if e.g. `app.component.ts` ends up being part of the test tsconfig compilation unit (we avoid this order though by visiting build targets first). PR Close #61421
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