morlutoandCursor Agent
317bf3fe23
* fix: report provider admission failures as typed codes * fix(evm): keep limiter path on admission diagnostics * fix: assert WABT and CBOR admission codes * fix: keep admission details on returned failures * fix(evm): detect repeated CBOR keys in the decoder --------- Co-authored-by: Cursor Agent <[email protected]>
54 lines
1.7 KiB
TypeScript
54 lines
1.7 KiB
TypeScript
import type { FileHandle } from "node:fs/promises";
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/** Close admission for one owned file handle. `code` is the stable identity. */
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export class OwnedFileHandleError extends Error {
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readonly _tag = "OwnedFileHandleError";
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constructor(readonly code: "handle_invalidated") {
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super(code);
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this.name = "OwnedFileHandleError";
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}
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}
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type CloseState =
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| { readonly kind: "open" }
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| { readonly kind: "closing"; readonly attempt: Promise<void> }
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| { readonly kind: "closed" }
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| { readonly kind: "failed"; readonly cause: unknown };
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/** One file handle whose close result must remain truthful across retries. */
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export class OwnedFileHandle<
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Handle extends Pick<FileHandle, "fd" | "close"> = FileHandle,
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> {
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#state: CloseState = { kind: "open" };
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constructor(readonly handle: Handle) {}
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/** Close the owned handle, retaining an unconfirmed close as a sticky failure. */
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close(): Promise<void> {
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if (this.#state.kind === "closed") return Promise.resolve();
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if (this.#state.kind === "closing") return this.#state.attempt;
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if (this.#state.kind === "failed") return Promise.reject(this.#state.cause);
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if (this.handle.fd < 0) {
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const cause = new OwnedFileHandleError("handle_invalidated");
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this.#state = { kind: "failed", cause };
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return Promise.reject(cause);
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}
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const attempt = Promise.resolve().then(() => this.#attemptClose());
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this.#state = { kind: "closing", attempt };
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return attempt;
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}
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async #attemptClose(): Promise<void> {
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try {
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await this.handle.close();
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this.#state = { kind: "closed" };
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} catch (cause: unknown) {
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this.#state =
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this.handle.fd < 0 ? { kind: "failed", cause } : { kind: "open" };
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throw cause;
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}
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}
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}
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