chore(v11): Upgrade to TypeScript 7.0#19435
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size-limit report 📦
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node-overhead report 🧳Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.
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Bump typescript to ~7.0.2 and apply the changes TS 7 requires: - remove downlevelIteration and baseUrl (both removed in TS 7) - set explicit rootDir on all emitting tsconfigs (now required) - add DOM lib and node types to the shared base config - scope DOM out of cloudflare (conflicts with workers-types) - source fixes: BodyInit casts on transports, readonly web-vitals globals, WebAssembly.Exception ts-expect-error removal, elysia trace handler generic, replay paint entry ts-expect-error
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Bumps TypeScript from
~5.8.0to~7.0.2, the native (Go) compiler.The changes here are what TS 7 itself forces:
rootDiron every emitting tsconfig (now required)downlevelIterationandbaseUrloptionsDOMto the sharedlibandnodetotypes, since globals are no longer auto-includedlibback toes2020so DOM's fetch types don't clash with@cloudflare/workers-typesbrowser-integration-testsoff the removednode10resolution tobundler(with apathsshim for the internal replay types those tests borrow)as BodyInitcasts on the transports,readonlyon the web-vitals global augmentations, an elysia trace-handler generic, and a couple of@ts-expect-erroradjustmentsemberand the bundler-pluginvite-type-compattest pin a JS-based TypeScript locally (nested devDep), because glint and that test consume the classic compiler API that the native compiler dropped. imo that's fine as a stop-gap until those tools support TS 7.The native compiler also makes type generation much faster. Measured on CI, full monorepo, 46 projects, no nx cache:
build:transpile+build:types(nx run)build:transpile(rollup/esbuild) is unchanged across the two, so effectively all of the ~140s saved istsctype generation.closes #19226