[Upd4ting]

Why

Antony wants every suppression guardrails.suppressions.json allows in this repo brought to zero by fixing the code it hides (ANT-1090). The 56 @ts-expect-error were all in unit specs that pass a value the types forbid on purpose, to check a runtime refusal. Those refusals exist for callers the type checker never sees: plain-JS modules and version skew. Antony chose to test them the way such a caller reaches them, from plain JavaScript. This PR does that and lowers tsExpectError from 56 to 0.

What

• tsconfig.json sets allowJs: true (checkJs stays off) and adds src/**/*.js to include. The build compiles each *.untyped.spec.js into dist/test, where mocha and ajs module test already look.
• Each of the 62 tests that carried a directive moves whole into a *.untyped.spec.js sibling of its TS spec. It keeps its describe and it titles and its assertions. One file per TS spec, 21 in all. pipeline-lambda-ids was all such tests, so it became JS whole.
• Helpers both files need move out of the TS specs into fixtures: feeds-fixture.ts, selection-fixture.ts, pipeline-fold-fixture.ts and config-fixture.ts. They are moved, not rewritten.
• The expression JS specs build their context from the shared expression-fixture or expression-array-fixture. The tests they came from used a file-local copy of the same context. The fields those tests read (age, name, createdAt) have the same types in both.
• Type-aware oxlint also runs over the JS files. Two values keep their old TS type through a JSDoc annotation: REFUSED (readonly unknown[]) and one rejection callback parameter (unknown).

No production code changes.

flowchart LR
  subgraph before
    ts1["*.spec.ts"] -- "@ts-expect-error + bad value" --> guard1[runtime refusal]
  end
  subgraph after
    ts2["*.spec.ts"] --> typed[typed behaviour]
    js["*.untyped.spec.js<br/>(no type checking, like a JS caller)"] -- bad value --> guard2[runtime refusal]
    fx["*-fixture.ts"] --> ts2
    fx --> js
  end

Loading

SAFETY comments added

None.

Proof

pnpm run checks: Checks: 11 passed, 0 failed.

Same tests before and after. The unit suite, run as mocha JSON on base and head, compared by full test title and how often each title appears:

before 1356 passes 1356 | after 1356 passes 1356 failures 0 | titles differing: 0
untyped tests 62 in 21 files

The JS specs reach the refusals. The CROSS_INSTANCE refusal in NormalizeInstanceId is disabled on purpose, then restored:

# guard disabled
  2 passing (30ms)
  1 failing
  1) NormalizeInstanceId
       rejects CROSS_INSTANCE, naming the operation
# guard restored
  3 passing (10ms)

API: 1 packages, 1 entries unchanged against origin/main (committed HEAD).
API: skipped .agents/skills/verify-module, private.
Runtime API: 1 packages, 1 entries unchanged against origin/main (committed HEAD).
No behavioural probe ran.

Suppressions in authored code files (origin/main and committed HEAD). A lint directive counts once per rule it names; * is a directive naming none.

Suppressions	base	HEAD
Lint suppressions, all rules	1	1
Lint suppressions, anti-slop/no-unknown-parameters	1	1
@ts-expect-error	56	0
@ts-ignore	0	0
SAFETY: comments	0	0
Lint config rule-offs, all rules	0	0