diff --git a/merge-check.sh b/merge-check.sh
deleted file mode 100644
index 4769564..0000000
--- a/merge-check.sh
+++ /dev/null
@@ -1,37 +0,0 @@
-#!/bin/sh
-# mesh-check-toolchain: typescript
-# mesh-check-also: go replays/merge-check.sh
-# mesh-check-also: go asks/merge-check.sh
-#
-# The lab's own check (novox/hq ADR 0237 as amended): the second layer of a pull request's merge check,
-# `mesh/repo-check`, run by the build seat — and by hand.
-#
-# The mesh builds no module from the lab, so no gate runs for its pull requests (`mesh/merge-gate` says the
-# change touches no module of the graph); this is all that is checked before a change to it merges. The lab
-# is in two languages, and each part runs in its own toolchain's container (novox/hq issue 302):
-#
-#   - this script, in the TypeScript toolchain: installed from the lock file, type-checked, sources and
-#     tests, and the unit suite;
-#   - replays/merge-check.sh, in the Go toolchain, declared above: the replays register and its prover
-#     formatted, vetted and compiled, and the register's own tests;
-#   - asks/merge-check.sh, in the Go toolchain, declared above: the proof of the operator's answers, run
-#     against the controller, runtime and catalogue cloned beside the lab (novox/hq ADR 0259).
-#
-# **Said, never passed silently**: the integration suite raises a lab on a workstation, and the replays
-# raise containers through the container runtime — neither is given to code nobody has approved. The
-# replays run from the lab's main, reviewed, in every gate of a core change; a change to them is proven by
-# `go run ./replays/cmd/prove` by hand before it merges.
-set -eu
-
-npm ci --no-audit --no-fund --loglevel=error
-npm run typecheck
-npm test
-
-# By hand, with Go at hand, the Go part runs here too; on the build seat it runs in the Go toolchain.
-if command -v go >/dev/null 2>&1; then
-	sh replays/merge-check.sh
-	sh asks/merge-check.sh
-else
-	echo "replays/ and asks/ (Go) are checked by their merge-check.sh, which the build seat runs in the Go toolchain"
-fi
-echo "NOT RUN HERE: the integration suite and the replays — they need a lab and the container runtime"
diff --git a/package.json b/package.json
index 553c488..7167380 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
   },
   "scripts": {
     "typecheck": "tsc --noEmit && tsc --noEmit -p tsconfig.test.json",
+    "pretest": "npm run typecheck",
     "test": "node --test --experimental-strip-types 'test/*.test.ts'",
     "test:integration": "node --experimental-strip-types src/cli.ts suite",
     "check": "npm run typecheck && npm test && npm run test:integration",