build: modernize the toolchain, adopt TypeScript 7, and pick up the republished upstreams

.changeset/config.json

@@ -1,15 +1,15 @@
 {
-  "$schema": "https://unpkg.com/@changesets/config@2.3.1/schema.json",
-  "___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH": {
-    "onlyUpdatePeerDependentsWhenOutOfRange": true,
-    "updateInternalDependents": "always"
-  },
-  "access": "public",
-  "baseBranch": "main",
-  "changelog": "@changesets/cli/changelog",
-  "commit": false,
-  "fixed": [],
-  "ignore": [],
-  "linked": [],
-  "updateInternalDependencies": "patch"
+	"$schema": "https://unpkg.com/@changesets/config@2.3.1/schema.json",
+	"___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH": {
+		"onlyUpdatePeerDependentsWhenOutOfRange": true,
+		"updateInternalDependents": "always"
+	},
+	"access": "public",
+	"baseBranch": "main",
+	"changelog": "@changesets/cli/changelog",
+	"commit": false,
+	"fixed": [],
+	"ignore": [],
+	"linked": [],
+	"updateInternalDependencies": "patch"
 }

.changeset/tidy-moons-invent.md

@@ -0,0 +1,15 @@
+---
+'assertron': patch
+---
+
+Raise the minimum of every runtime dependency to the version this release is built and
+tested against: `iso-error@6.0.5`, `path-equal@1.2.7`, `satisfier@5.4.4`, `tersify@4.0.6`
+and `type-plus@7.6.2`. Consumers resolve the newer upstreams as a result.
+
+The published bundles are also rebuilt by tsdown rather than three `tsc` passes. The public
+API is unchanged and `esm/index.js`, `cjs/index.js` and the declarations beside them keep
+their paths, but the emitted output differs: the CJS target moves from ES5 to ES2015
+(rolldown's floor), a small `_virtual/` helper module set appears alongside the entry, and
+per-module `.d.ts` files that were never reachable through the `exports` map are no longer
+emitted. Two source files that nothing referenced — `ts/assert-order/internalInterfaces.ts`
+and `ts/testUtils.ts` — are dropped from the published `ts/` sources.

.github/renovate.json

@@ -1,3 +1,29 @@
 {
-	"extends": ["github>unional/renovate-preset"]
+	"$schema": "https://docs.renovatebot.com/renovate-schema.json",
+	"extends": ["github>unional/renovate-preset"],
+	"description": [
+		"Local overrides that belong in unional/renovate-preset once it carries the canonical body.",
+		"Without them nothing merges bot PRs here: the preset has no automerge policy, and the",
+		"Mergify rules this repo used to rely on resolved to nothing (`extends: .github` against a",
+		"cyberuni/.github that has no mergify.yml), while the Dependabot automerge workflow armed a",
+		"squash merge the repo disallows. Both are removed; Renovate with platformAutomerge is the",
+		"single updater and the single merge mechanism, and it enqueues natively."
+	],
+	"dependencyDashboard": true,
+	"automerge": true,
+	"automergeType": "pr",
+	"platformAutomerge": true,
+	"rebaseWhen": "behind-base-branch",
+	"minimumReleaseAge": "1 day",
+	"packageRules": [
+		{
+			"description": "Majors break builds in ways CI catches but a human should choose to absorb.",
+			"matchUpdateTypes": ["major"],
+			"automerge": false
+		}
+	],
+	"vulnerabilityAlerts": {
+		"description": "Shortened, not removed: a malicious fix release is exactly what an instant merge would swallow.",
+		"minimumReleaseAge": "1 day"
+	}
 }

.gitignore

@@ -41,6 +41,9 @@ build/Release
 # webstorm
 .idea
 
+# turborepo
+.turbo
+
 # yarn
 .pnp.*
 .yarn/*

.size-limit.json

@@ -0,0 +1,10 @@
+[
+	{
+		"path": "./esm/index.js",
+		"limit": "10 kB"
+	},
+	{
+		"path": "./cjs/index.js",
+		"limit": "15 kB"
+	}
+]

biome.json

@@ -0,0 +1,12 @@
+{
+	"$schema": "https://biomejs.dev/schemas/2.5.11/schema.json",
+	"extends": ["@repobuddy/biome/recommended"],
+	"vcs": {
+		"enabled": true,
+		"clientKind": "git",
+		"useIgnoreFile": true
+	},
+	"files": {
+		"includes": ["!cjs", "!esm", "!tslib", "!coverage", "!.turbo", "!skills-lock.json", "!CHANGELOG.md"]
+	}
+}

knip.json

@@ -0,0 +1,3 @@
+{
+	"$schema": "https://unpkg.com/knip@6/schema.json"
+}