build: Next.js 16.3 canary + TypeScript 7 - #31
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Enable Next's TypeScript CLI so webpack production builds work with TypeScript 7. Assisted-by: AI Signed-off-by: Tim Nunamaker <tnunamak@gmail.com>
This was referenced Jul 23, 2026
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Superseded by #44, which includes the TypeScript 7 / Next 16.3-canary update and its validation. |
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Upgrades to TypeScript 7 (the Go-native compiler) by moving Next.js to 16.3 canary, which is required to build with TS 7.
Why the canary: TS 7.0 deleted the JS Compiler API (
typescript/lib/typescript.js) that Next 16.2 resolves, sonext buildfails on TS 7. Next PR #95639 (merged 2026-07-10) addsexperimental.useTypeScriptCli, which makes Next run the localtscdirectly. That flag ships innext@16.3.0-canary.93, not yet in stable 16.2.x. Moving to the canary deliberately to unblock TS 7 now; revert to 16.3 stable when it GAs.next→16.3.0-canary.93(console + site)typescript→^7.0.2(all 5 declaring packages)experimental.useTypeScriptCli: truein both next.config.mjsVerified: console
next build --webpackcompiles clean on 16.3-canary with useTypeScriptCli; site build exit 0; reference-implementation + console typechecks exit 0; test suite passes.Note: this runs a Next.js canary in the build. Deliberate tradeoff to get TS 7 now. For maintainer review.
Closes #29.