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Kaoru0822andClaude Opus 5.5
fc712b3750
A release call was linked to its acquisition through the receiver's lexical
binding alone, so `stream = { destroy() {} }; stream.destroy()` still
produced a resolved `releases` edge to the original stream and entered the
default ownership trace.
A release is now complete only when every value written to the handle
binding is the linked acquisition itself (through parentheses, TypeScript
wrappers or `await`) or a nullish placeholder such as `let h = null`, which
cannot be released. Any other write, conditional replacement, or
destructuring keeps the linked release as a candidate (partial).
Fixes #3313
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
60 lines
1.7 KiB
TypeScript
60 lines
1.7 KiB
TypeScript
import { expect, it } from "vitest";
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import { analyzeJavaScriptSemantics } from "./javascriptSemanticAnalysis.js";
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const releases = (source: string) =>
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analyzeJavaScriptSemantics(source)
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.resourceOperations.filter(({ kind }) => kind === "release")
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.map(({ method, linkedResourceIds, resolution }) => ({
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method,
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linked: linkedResourceIds.length,
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resolution,
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}));
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it.each([
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[
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"a declaration",
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`import { createReadStream } from "node:fs";
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const stream = createReadStream("input.txt");`,
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],
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[
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"a later assignment",
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`import { createReadStream } from "node:fs";
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let stream;
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stream = createReadStream("input.txt");`,
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],
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[
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"an awaited handle",
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`import { open } from "node:fs/promises";
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const stream = await open("input.txt");`,
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],
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[
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"a nullish placeholder before the acquisition",
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`import { open } from "node:fs/promises";
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let stream = null;
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try { stream = await open("input.txt"); } finally {}`,
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],
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])(
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"keeps a release complete when the handle holds only %s",
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(_name, acquire) => {
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expect(releases(`${acquire}\nstream.close();`)).toEqual([
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{ method: "close", linked: 1, resolution: "complete" },
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]);
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},
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);
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it.each([
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["an unconditional replacement", "stream = { destroy() {} };"],
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["a conditional replacement", "if (flag) stream = { destroy() {} };"],
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["a destructuring replacement", "({ stream } = other);"],
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])("keeps a release partial after %s", (_name, replacement) => {
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expect(
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releases(`
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import { createReadStream } from "node:fs";
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let stream = createReadStream("input.txt");
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${replacement}
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stream.destroy();
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`),
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).toEqual([{ method: "destroy", linked: 1, resolution: "partial" }]);
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});
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