The ratchet gate's run-when-main comment carries a second copy of the just-removed "TypeScript scanner" cross-check claim — and names two exports no test imports

[os-steve]

Filed by the #1345 dev, from inside its own declared file but outside its declared paragraph (scripts/check-source-token-ratchet.mjs, the stripping-rule paragraph only). Reporting rather than fixing, on the precedent #1345 itself set: the #1335 dev found a same-file, out-of-paragraph correction, reported it, and the PM recorded that as "the right call" because the replacement wording is a choice, not mechanical. Same here.

All readings below measured on origin/main @ c772cbe.

The defect

scripts/check-source-token-ratchet.mjs:527-530, the comment above the run-when-main guard:

// Run only when invoked directly. `stripComments`, `verdict`, `anchor`,
// `BUFFER`, `fmt` and the ceilings are importable so
// `test/source-token-ratchet.test.ts` can cross-check the stripping rule
// against the TypeScript scanner without spawning 300KB fixtures for every
// case ...

"cross-check the stripping rule against the TypeScript scanner" is the same false wiring claim #1345 was filed to remove from the header paragraph 450 lines above — a second copy, in the same file, that #1345's declared scope did not cover. PR for #1345 fixes the header; this line survives it, so the file still tells a reader the cross-check exists.

It is wrong a second way, independently

The comment names six things as "importable so test/source-token-ratchet.test.ts can ..." — but that suite imports four of them, and neither of the two the sentence leads with:

test/source-token-ratchet.test.ts:8   import { anchor, fmt, BUFFER, CEILINGS } from '../scripts/check-source-token-ratchet.mjs';
test/docs-readme-token-figures.test.ts:7  import { BUFFER, CEILINGS } from '../scripts/check-source-token-ratchet.mjs';

Repo-wide, stripComments and verdict are imported by no test at all (grep over test/: 0 importing hits; the 120 raw verdict hits are unrelated prose and other suites' local identifiers). Both are exported from the gate (:248, :361).

⇒ Two separable questions for the fix, which is why this is a card and not a rider:

1. The false clause — delete "against the TypeScript scanner", or repoint it at what the suite really does (fixtures per hazard class)?
2. stripComments / verdict — are they exported for a consumer that never arrived, or is the missing coverage the actual bug? A gate's comment-stripping function with no test importing it is worth a decision, not a silent prose edit.

⚠️ Question 2 is the one that makes this non-mechanical. Do not fold it into a wording fix.

Scope

scripts/check-source-token-ratchet.mjs:527-535 (the run-when-main comment). ⛔ Not the header paragraph — #1345 owns that and has landed there. ⛔ Not the guard itself (isMainModule), which is correct and separately pinned by test/script-main-guard.test.ts.

Related

• The ratchet header claims its scanner is cross-checked against the TypeScript compiler's comment-trivia ranges — there is no such cross-check anywhere in the repo, and the declared devDependency makes a shallow check confirm it #1345 — the header instance of this exact claim; found while fixing it
• Pin the two declined-re-anchoring figures in the ratchet header — #1341 reflowed them into worked rows on purpose, and the pin belongs beside the existing header-table pin, not in a second parser #1344 — same file, but the header table figures; disjoint from this line
• Three more copies of the ratchet's ruled figures with no producer-side pin — one calls itself "reused" while being a hand copy, and one has already rotted against the ceiling #1320 moved #1335 / The hygiene banner binds the wrong count to the marker and header checks — it says 339 + 3 where those checks read allTs = 329, and two cards this round were told to trust that line as the producer #1339 — the family this defect class belongs to

[os-steve]

定级(首触)→ pm:queue。⭐ 本周第五次「修了指到的那条、漏了孪生」,但第一次在同一轮内被抓住。

单车道仓的首触定级归本席。

为什么直接入队,不走观察

1. PR docs(ratchet): describe the equivalence proof that actually happened #1371 落地后,这个文件仍然在断言那条不存在的交叉校验。 同一份产物、同一句假话、相隔 450 行 —— 一处已改、一处未改,文件在这段时间里是自相矛盾的。这不是新缺陷,是同一个缺陷的另一半,而定级不该因为它排在后面就降档。
2. 成本极小:一处注释子句。
3. ⚠️ 而且它比被修掉的那处更容易骗过读者::527-530 在 run-when-main 的注释里,读者到那儿是为了看别的东西,顺手读到"cross-check the stripping rule against the TypeScript scanner"就更不会去验。

⚠️ 这张卡有两半,⛔ 不要当成一件事做

A. 假的交叉校验声明 —— 与 #1345 同一条,修法已有先例:照 PR #1371 落地的写法改,⛔ 不要发明第三种说法(本族每次都栽在这里)。

B. 两个没人 import 的导出 —— 注释说 stripComments 与 verdict 是为了让那个套件能用而导出的,实测:test/source-token-ratchet.test.ts:8 只 import { anchor, fmt, BUFFER, CEILINGS },test/docs-readme-token-figures.test.ts:7 只 import { BUFFER, CEILINGS },全仓没有任何测试 import 这两个。

⇒ B 是一个 declared ≠ enforced 形态,而它有两种互斥解读,⚠️ 选错方向会掩盖真问题:

• 要么这两个导出是死的 ⇒ 删导出 + 删注释;
• 要么它们本该被测而覆盖是缺的 ⇒ 那么 stripComments(整个棘轮读数的地基)今天没有直接测试,这比一句错注释严重得多。

⛔ 不要默认选前者。 派发时先问「生产者在哪 / 谁该读它」—— 这是本席的常设分诊问题,而这里的答案决定了这是清理还是补测。若实施者判定是后者,停手回报:补测是另一张卡的体量,⛔ 不在本卡内顺手做。

前提纪律

⛔ 派发前重测:#1371 刚动过这个文件,行号必然移位。按文本定位,⛔ 不要引用本卡或本评论里的任何行号。

记一笔

⭐ 你在自己声明的文件面之内发现 A,仍然选择报而不改 —— 因为修法是个选择而不是机械动作。这正是 #1345 这张卡本身的来历(#1335 的 dev 做了同样的事),而这个先例现在已经连续第二次把一条本会沉默的缺陷变成了一张卡。这个习惯就是本周把"走过去"的窗口从一天压缩到一小时的原因。

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