(fix) if conditions control flow #846
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This adds an IfScope to svelte2tsx which keeps track of the if scope including nested ifs. That scope is used to prepend the resulting condition check to all inner lambda functions that svelte2tsx needs to create for slot, each, await. This way, TypeScript's control flow can determine the type of checked variables and no longer loses that info due to the lambda functions. sveltejs#619
added 15 commits
March 1, 2021 19:22
add SnapshotFragmentMap util
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@jasonlyu123 could you review this? The logic is a little complicated and I changed code in quite a few places (although most of the new code is tests) and I want to make sure I'm not doing something stupid here or if the approach I took here is not good in your opinion. High level summary: The if-conditions are repeated and prepended to the lambda functions to reinstantiate control flow. I introduced comments around them to be able to filter those repeats out when returning things like diagnostics,rename etc. That comment could possibly used in other places, too, later on. |
jasonlyu123
reviewed
Mar 8, 2021
added 2 commits
March 8, 2021 15:50
This was referenced Mar 11, 2021
This was referenced Mar 11, 2021
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This adds an IfScope to svelte2tsx which keeps track of the if scope including nested ifs. That scope is used to prepend the resulting condition check to all inner lambda functions that svelte2tsx needs to create for slot, each, await. This way, TypeScript's control flow can determine the type of checked variables and no longer loses that info due to the lambda functions.
#619
TODO:
handle shadowed variablesremove hidden checks from getDefinitions/findReferences/diagnosticsfix rename