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Title: Cherry-pick #60402, #60440, #60616 into release-5.7 by jakebailey · Pull Request #60777 · microsoft/TypeScript · GitHub

Open Graph Title: Cherry-pick #60402, #60440, #60616 into release-5.7 by jakebailey · Pull Request #60777 · microsoft/TypeScript

X Title: Cherry-pick #60402, #60440, #60616 into release-5.7 by jakebailey · Pull Request #60777 · microsoft/TypeScript

Description: TypeScript is a superset of JavaScript that compiles to clean JavaScript output. - Cherry-pick #60402, #60440, #60616 into release-5.7 by jakebailey · Pull Request #60777 · microsoft/TypeScript

Open Graph Description: These are all fixes related to syntactic nullish checks. Pulling these into one PR since their tests are all the same file and it'd be a pain to do each individually except with a hand merge.

X Description: These are all fixes related to syntactic nullish checks. Pulling these into one PR since their tests are all the same file and it'd be a pain to do each individually except with a hand merge.

Opengraph URL: https://github.com/microsoft/TypeScript/pull/60777

X: @github

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Domain: github.com

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Fixed syntactic nullisness semantics for comma expressions (https://github.com/microsoft/TypeScript/pull/60777/commits/cbda51a5969ddf5d76ad381987d928028dc76d9f
microsoft…https://github.com/microsoft/TypeScript/pull/60402
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MetaProperty is possibly nullish (https://github.com/microsoft/TypeScript/pull/60777/commits/ee0eca7689857cf031d9e26bdebc95f83c5d933b
microsoft#60440https://github.com/microsoft/TypeScript/pull/60440
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Fixed syntactic nullisness semantics for tagged template expressions (https://github.com/microsoft/TypeScript/pull/60777/commits/75372aa4d620191627d5431e76830ce2b05ae44f
m…https://github.com/microsoft/TypeScript/pull/60616
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