feat: deno on quickjs-ng engine - #35849
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Applied tools/deno/deno-jsc-integration.patch from v8x @ 3ef6f8a with the v8 features switched to the quickjs backend. No IS_V8X / v8x_snapshot_init_boundary / prepare_stack_trace guard hunks — deno_core runs stock; snapshots come from the backend's C-API replay tape.
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- [patch.crates-io] v8 -> ../v82jsc (side-by-side v8x checkout, quickjs backend). - cli default += deno_snapshots/disable + deno_runtime/transpile: quickjs has no startup-snapshot support, so boot via InitMode::New with runtime TS transpile of ext modules. Module bytecode cache handles startup speed (embeddable via V82JSC_BC_BLOB in v8x).
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Closing in favor of #36194 |
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Runs deno on the QuickJS engine via the v8x v8-ABI backend, instead of V8.
QuickJS has no heap-snapshot serializer, so there is no V8 startup snapshot. deno boots via
InitMode::New(extensions initialized live, runtime TS transpile), and the QuickJS module bytecode cache covers startup cost;it can be baked into the binary via
V82JSC_BC_BLOB(see v8x) so the binary is self-contained.Verified:
deno eval/run, web APIs (TextDecoder/URL/fetch/JSON/async),node:*(fs/path/os/crypto/streams),npm:specifiers, and Next.js 14 dev (SSR + native SWC).Setup
../v82jsc.cargo build --bin denowithdeno_snapshots/disable+deno_runtime/transpiledefault features select the no-snapshot quickjs path.Numbers