chore: drop TypeScript versions below 5.4 #15621
Merged
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Summary
I wanna use
but
preservewas only added in 5.4: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-5-4.html#support-for-require-calls-in---moduleresolution-bundler-and---module-preserve.Note that there is zero changes to the output
d.tsfiles, but since we no longer test against the older versions of TS, I'll call it out in the changelogTest plan