Specialized error message for setting lib
or target
to a future ES version
#60219
+44
−5
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Fixes #60050
This PR improves the diagnostic message for unsupported
lib
ortarget
values by emitting a specialized message when the specified value looks like a future ES version.I altered the originally suggested message a bit because printing a concrete TypeScript version in the error message felt a skosh unusual to me, instead using the phrase
this version of TypeScript
. Of course I'm open to any change suggested by reviewers.Example
tsconfig.json
🏠 Current Behavior
🌟 New Behavior