Commit Graph
2 Commits
Author SHA1 Message Date
Neil 49e5fa597a refactor(lint): enable anti-slop/no-reflect-apply (#20782)
`anti-slop/no-reflect-apply` rejects `Reflect.apply(fn, thisArg, argsArray)`.
It defeats the call-signature checks TypeScript applies to an ordinary call:
the args array is checked as an array, not positionally against the callee's
parameters, so arity and type errors pass silently. Dynamic dispatch belongs
behind a named interface, not behind a reflective call.

Flipped the rule from "off" to "error" and cleared all 17 baseline violations
across `src config tests mobile` (16 sites; one file had two).

Fix pattern: `Reflect.apply(fn, recv, args)` becomes `fn.call(recv, ...args)`,
or a direct method call when the implicit receiver is already the right object.
The receiver is preserved at every site.

Where the callee is a captured built-in whose overloads split on an argument's
shape (`String.prototype.split`, `JSON.stringify`), a call-signature capture no
longer compiles once the args are passed positionally. Those three sites capture
the function through a method-shaped type
(`{ split(separator: unknown, limit?: number): string[] }['split']`), which keeps
the forwarding call checked rather than asserted.

Behaviour notes:
- `diff-section-layout.test.ts` drops a `limit === undefined ? [sep] : [sep, limit]`
  conditional. Equivalent: `String.prototype.split` maps an undefined limit to
  2^32-1, and the `Symbol.split` path forwards undefined either way.
- `workspace-space-compaction.test.ts` forwards `reduce`'s two arguments unchanged,
  so the `arguments.length >= 2` initial-value branch is unaffected.
- `agent-session-history-byte-accounting.test.ts` is the one site where the receiver
  is not literally preserved (`JSON` -> undefined). `JSON.stringify` never reads
  `this` per spec, and restoring `.call(JSON, ...)` would reintroduce the overload
  failure under strictBindCallApply.

No suppression comments added — the rule has zero `oxlint-disable` sites.

`Reflect.apply` still appears at electron.vite.config.ts:159, inside a template
literal of generated bootstrap source. That is string content, not lintable code.
2026-09-15 00:10:11 -07:00
NeilandOrca 077561f89a perf(terminal): measure stream byte length natively above a code-unit floor (#10916)
* perf(terminal): measure stream byte length natively above a code-unit floor

The terminal RPC path counted UTF-8 bytes with a hand-rolled per-code-point scan
that Buffer.byteLength does natively an order of magnitude faster.

Routed through a small module rather than swapping the shared clipboard helper,
which has ~50 renderer call sites and a partial-count contract on the over-limit
path that must not change.

4.4x on an 8KiB batcher push, 4.2x on a 2MiB snapshot scan, 4.0x on the 48KiB
chunk gate, and 1.26-1.33x on the adversarial early-trip shapes where the legacy
scan bails after a third of the string.

The floor is load-bearing, not defensive. Buffer.byteLength has a fixed ~14ns
call cost against a scan iteration of ~1.5ns, so below the measured 8-12 code
unit crossover the native call is a REGRESSION -- 4.2x slower at one code unit,
which is keystroke echo, the most latency-sensitive PTY shape there is. Short
inputs keep the scan verbatim; 16 leaves margin over the crossover so the worst
sub-floor shape stays at parity.

measureTerminalStreamByteLength takes the native count only when
`length * 3 <= stopAfterBytes` proves the limit cannot trip, so the callers'
truncated running total is never replaced by a full count.

Co-authored-by: Orca <help@stably.ai>

* test(terminal): benchmark production byte-length exports

Co-authored-by: Orca <help@stably.ai>

---------

Co-authored-by: Orca <help@stably.ai>
2026-07-27 17:15:54 -07:00