diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..d90a1bc
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,16 @@
+{
+	"root": true,
+
+	"extends": "@ljharb",
+
+	"rules": {
+		"eqeqeq": ["error", "allow-null"],
+		"id-length": "off",
+		"new-cap": ["error", {
+			"capIsNewExceptions": [
+				"RequireObjectCoercible",
+				"ToObject",
+			],
+		}],
+	},
+}
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..868f4ff
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: [ljharb]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: npm/math-intrinsics
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with a single custom sponsorship URL
diff --git a/.github/workflows/node-aught.yml b/.github/workflows/node-aught.yml
new file mode 100644
index 0000000..30e542c
--- /dev/null
+++ b/.github/workflows/node-aught.yml
@@ -0,0 +1,15 @@
+name: 'Tests: node.js < 10'
+
+on: [pull_request, push]
+
+permissions:
+  contents: read
+
+jobs:
+  tests:
+    uses: ljharb/actions/.github/workflows/node.yml@main
+    with:
+      range: '< 10'
+      type: minors
+      command: npm run tests-only
+      skip-ls-check: true
diff --git a/.github/workflows/node-pretest.yml b/.github/workflows/node-pretest.yml
new file mode 100644
index 0000000..88d49f9
--- /dev/null
+++ b/.github/workflows/node-pretest.yml
@@ -0,0 +1,10 @@
+name: 'Tests: pretest/posttest'
+
+on: [pull_request, push]
+
+permissions:
+  contents: read
+
+jobs:
+  tests:
+    uses: ljharb/actions/.github/workflows/pretest.yml@main
diff --git a/.github/workflows/node-tens.yml b/.github/workflows/node-tens.yml
new file mode 100644
index 0000000..7ac9c5b
--- /dev/null
+++ b/.github/workflows/node-tens.yml
@@ -0,0 +1,14 @@
+name: 'Tests: node.js 10 - 20'
+
+on: [pull_request, push]
+
+permissions:
+  contents: read
+
+jobs:
+  tests:
+    uses: ljharb/actions/.github/workflows/node.yml@main
+    with:
+      range: '>= 10 < 20'
+      type: minors
+      command: npm run tests-only
diff --git a/.github/workflows/node-twenties.yml b/.github/workflows/node-twenties.yml
new file mode 100644
index 0000000..209e157
--- /dev/null
+++ b/.github/workflows/node-twenties.yml
@@ -0,0 +1,14 @@
+name: 'Tests: node.js >= 20'
+
+on: [pull_request, push]
+
+permissions:
+  contents: read
+
+jobs:
+  tests:
+    uses: ljharb/actions/.github/workflows/node.yml@main
+    with:
+      range: '>= 20'
+      type: minors
+      command: npm run tests-only
diff --git a/.github/workflows/rebase.yml b/.github/workflows/rebase.yml
new file mode 100644
index 0000000..b9e1712
--- /dev/null
+++ b/.github/workflows/rebase.yml
@@ -0,0 +1,9 @@
+name: Automatic Rebase
+
+on: [pull_request_target]
+
+jobs:
+  _:
+    uses: ljharb/actions/.github/workflows/rebase.yml@main
+    secrets:
+      token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/require-allow-edits.yml b/.github/workflows/require-allow-edits.yml
new file mode 100644
index 0000000..a685b8a
--- /dev/null
+++ b/.github/workflows/require-allow-edits.yml
@@ -0,0 +1,18 @@
+name: Require “Allow Edits”
+
+on: [pull_request_target]
+
+permissions:
+  contents: read
+
+jobs:
+  _:
+    permissions:
+      pull-requests: read  # for ljharb/require-allow-edits to check 'allow edits' on PR
+
+    name: "Require “Allow Edits”"
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: ljharb/require-allow-edits@main
diff --git a/.gitignore b/.gitignore
index 5829e8e..5d47dca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -133,3 +133,5 @@ dist
 npm-shrinkwrap.json
 package-lock.json
 yarn.lock
+
+.npmignore
diff --git a/.npmrc b/.npmrc
index 43c97e7..eacea13 100644
--- a/.npmrc
+++ b/.npmrc
@@ -1 +1,3 @@
 package-lock=false
+allow-same-version=true
+message=v%s
diff --git a/README.md b/README.md
index 716dd98..046016c 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,47 @@
-# math-intrinsics
-ES Math-related intrinsics, robustly cached.
+# math-intrinsics <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
+
+[![github actions][actions-image]][actions-url]
+[![coverage][codecov-image]][codecov-url]
+[![License][license-image]][license-url]
+[![Downloads][downloads-image]][downloads-url]
+
+[![npm badge][npm-badge-png]][package-url]
+
+ES Math-related intrinsics and helpers, robustly cached.
+
+ - `abs`
+ - `floor`
+ - `isFinite`
+ - `isInteger`
+ - `isNaN`
+ - `isNegativeZero`
+ - `max`
+ - `min`
+ - `pow`
+ - `sign`
+ - `constants/maxsafeInteger`
+ - `constants/maxValue`
+
+
+## Tests
+Simply clone the repo, `npm install`, and run `npm test`
+
+## Security
+
+Please email [@ljharb](https://github.com/ljharb) or see https://tidelift.com/security if you have a potential security vulnerability to report.
+
+[package-url]: https://npmjs.org/package/math-intrinsics
+[npm-version-svg]: https://versionbadg.es/es-shims/math-intrinsics.svg
+[deps-svg]: https://david-dm.org/es-shims/math-intrinsics.svg
+[deps-url]: https://david-dm.org/es-shims/math-intrinsics
+[dev-deps-svg]: https://david-dm.org/es-shims/math-intrinsics/dev-status.svg
+[dev-deps-url]: https://david-dm.org/es-shims/math-intrinsics#info=devDependencies
+[npm-badge-png]: https://nodei.co/npm/math-intrinsics.png?downloads=true&stars=true
+[license-image]: https://img.shields.io/npm/l/math-intrinsics.svg
+[license-url]: LICENSE
+[downloads-image]: https://img.shields.io/npm/dm/es-object.svg
+[downloads-url]: https://npm-stat.com/charts.html?package=math-intrinsics
+[codecov-image]: https://codecov.io/gh/es-shims/math-intrinsics/branch/main/graphs/badge.svg
+[codecov-url]: https://app.codecov.io/gh/es-shims/math-intrinsics/
+[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/es-shims/math-intrinsics
+[actions-url]: https://github.com/es-shims/math-intrinsics/actions
diff --git a/abs.d.ts b/abs.d.ts
new file mode 100644
index 0000000..14ad9c6
--- /dev/null
+++ b/abs.d.ts
@@ -0,0 +1 @@
+export = Math.abs;
\ No newline at end of file
diff --git a/abs.js b/abs.js
new file mode 100644
index 0000000..a751424
--- /dev/null
+++ b/abs.js
@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./abs')} */
+module.exports = Math.abs;
diff --git a/constants/maxSafeInteger.d.ts b/constants/maxSafeInteger.d.ts
new file mode 100644
index 0000000..fee3f62
--- /dev/null
+++ b/constants/maxSafeInteger.d.ts
@@ -0,0 +1,3 @@
+declare const MAX_SAFE_INTEGER: 9007199254740991;
+
+export = MAX_SAFE_INTEGER;
\ No newline at end of file
diff --git a/constants/maxSafeInteger.js b/constants/maxSafeInteger.js
new file mode 100644
index 0000000..b568ad3
--- /dev/null
+++ b/constants/maxSafeInteger.js
@@ -0,0 +1,5 @@
+'use strict';
+
+/** @type {import('./maxSafeInteger')} */
+// eslint-disable-next-line no-extra-parens
+module.exports = /** @type {import('./maxSafeInteger')} */ (Number.MAX_SAFE_INTEGER) || 9007199254740991; // Math.pow(2, 53) - 1;
diff --git a/constants/maxValue.d.ts b/constants/maxValue.d.ts
new file mode 100644
index 0000000..292cb82
--- /dev/null
+++ b/constants/maxValue.d.ts
@@ -0,0 +1,3 @@
+declare const MAX_VALUE: 1.7976931348623157e+308;
+
+export = MAX_VALUE;
diff --git a/constants/maxValue.js b/constants/maxValue.js
new file mode 100644
index 0000000..a2202dc
--- /dev/null
+++ b/constants/maxValue.js
@@ -0,0 +1,5 @@
+'use strict';
+
+/** @type {import('./maxValue')}  */
+// eslint-disable-next-line no-extra-parens
+module.exports = /** @type {import('./maxValue')}  */ (Number.MAX_VALUE) || 1.7976931348623157e+308;
diff --git a/floor.d.ts b/floor.d.ts
new file mode 100644
index 0000000..9265236
--- /dev/null
+++ b/floor.d.ts
@@ -0,0 +1 @@
+export = Math.floor;
\ No newline at end of file
diff --git a/floor.js b/floor.js
new file mode 100644
index 0000000..a0b001b
--- /dev/null
+++ b/floor.js
@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./abs')} */
+module.exports = Math.floor;
diff --git a/isFinite.d.ts b/isFinite.d.ts
new file mode 100644
index 0000000..6daae33
--- /dev/null
+++ b/isFinite.d.ts
@@ -0,0 +1,3 @@
+declare function isFinite(x: unknown): x is number | bigint;
+
+export = isFinite;
\ No newline at end of file
diff --git a/isFinite.js b/isFinite.js
new file mode 100644
index 0000000..b201a5a
--- /dev/null
+++ b/isFinite.js
@@ -0,0 +1,12 @@
+'use strict';
+
+var $isNaN = require('./isNaN');
+
+/** @type {import('./isFinite')} */
+module.exports = function isFinite(x) {
+	return (typeof x === 'number' || typeof x === 'bigint')
+        && !$isNaN(x)
+        && x !== Infinity
+        && x !== -Infinity;
+};
+
diff --git a/isInteger.d.ts b/isInteger.d.ts
new file mode 100644
index 0000000..13935a8
--- /dev/null
+++ b/isInteger.d.ts
@@ -0,0 +1,3 @@
+declare function isInteger(argument: unknown): argument is number;
+
+export = isInteger;
\ No newline at end of file
diff --git a/isInteger.js b/isInteger.js
new file mode 100644
index 0000000..4b1b9a5
--- /dev/null
+++ b/isInteger.js
@@ -0,0 +1,16 @@
+'use strict';
+
+var $abs = require('./abs');
+var $floor = require('./floor');
+
+var $isNaN = require('./isNaN');
+var $isFinite = require('./isFinite');
+
+/** @type {import('./isInteger')} */
+module.exports = function isInteger(argument) {
+	if (typeof argument !== 'number' || $isNaN(argument) || !$isFinite(argument)) {
+		return false;
+	}
+	var absValue = $abs(argument);
+	return $floor(absValue) === absValue;
+};
diff --git a/isNaN.d.ts b/isNaN.d.ts
new file mode 100644
index 0000000..c1d4c55
--- /dev/null
+++ b/isNaN.d.ts
@@ -0,0 +1 @@
+export = Number.isNaN;
\ No newline at end of file
diff --git a/isNaN.js b/isNaN.js
new file mode 100644
index 0000000..e36475c
--- /dev/null
+++ b/isNaN.js
@@ -0,0 +1,6 @@
+'use strict';
+
+/** @type {import('./isNaN')} */
+module.exports = Number.isNaN || function isNaN(a) {
+	return a !== a;
+};
diff --git a/isNegativeZero.d.ts b/isNegativeZero.d.ts
new file mode 100644
index 0000000..7ad8819
--- /dev/null
+++ b/isNegativeZero.d.ts
@@ -0,0 +1,3 @@
+declare function isNegativeZero(x: unknown): boolean;
+
+export = isNegativeZero;
\ No newline at end of file
diff --git a/isNegativeZero.js b/isNegativeZero.js
new file mode 100644
index 0000000..b69adcc
--- /dev/null
+++ b/isNegativeZero.js
@@ -0,0 +1,6 @@
+'use strict';
+
+/** @type {import('./isNegativeZero')} */
+module.exports = function isNegativeZero(x) {
+	return x === 0 && 1 / x === 1 / -0;
+};
diff --git a/max.d.ts b/max.d.ts
new file mode 100644
index 0000000..ad6f43e
--- /dev/null
+++ b/max.d.ts
@@ -0,0 +1 @@
+export = Math.max;
\ No newline at end of file
diff --git a/max.js b/max.js
new file mode 100644
index 0000000..edb55df
--- /dev/null
+++ b/max.js
@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./max')} */
+module.exports = Math.max;
diff --git a/min.d.ts b/min.d.ts
new file mode 100644
index 0000000..fd90f2d
--- /dev/null
+++ b/min.d.ts
@@ -0,0 +1 @@
+export = Math.min;
\ No newline at end of file
diff --git a/min.js b/min.js
new file mode 100644
index 0000000..5a4a7c7
--- /dev/null
+++ b/min.js
@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./min')} */
+module.exports = Math.min;
diff --git a/package.json b/package.json
index c8ab0f7..8113eef 100644
--- a/package.json
+++ b/package.json
@@ -1,14 +1,37 @@
 {
 	"name": "math-intrinsics",
 	"version": "0.0.0",
-	"description": "ES Math-related intrinsics, robustly cached.",
-	"main": "index.js",
+	"description": "ES Math-related intrinsics and helpers, robustly cached.",
+	"main": false,
 	"exports": {
-		".": "./index.js",
+		"./abs": "./abs.js",
+		"./floor": "./floor.js",
+		"./isFinite": "./isFinite.js",
+		"./isInteger": "./isInteger.js",
+		"./isNaN": "./isNaN.js",
+		"./isNegativeZero": "./isNegativeZero.js",
+		"./max": "./max.js",
+		"./min": "./min.js",
+		"./pow": "./pow.js",
+		"./sign": "./sign.js",
+		"./constants/maxSafeInteger": "./constants/maxSafeInteger.js",
+		"./constants/maxValue": "./constants/maxValue.js",
 		"./package.json": "./package.json"
 	},
+	"sideEffects": false,
 	"scripts": {
-		"test": "echo \"Error: no test specified\" && exit 1"
+		"prepack": "npmignore --auto --commentLines=autogenerated",
+		"prepublishOnly": "safe-publish-latest",
+		"prepublish": "not-in-publish || npm run prepublishOnly",
+		"pretest": "npm run lint",
+		"test": "npm run tests-only",
+		"tests-only": "nyc tape 'test/**/*.js'",
+		"posttest": "npx npm@'>= 10.2' audit --production",
+		"prelint": "evalmd README.md",
+		"lint": "eslint --ext=js,mjs .",
+		"postlint": "tsc -p . && eclint check $(git ls-files | xargs find 2> /dev/null | grep -vE 'node_modules|\\.git' | grep -v dist/)",
+		"version": "auto-changelog && git add CHANGELOG.md",
+		"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""
 	},
 	"repository": {
 		"type": "git",
@@ -19,5 +42,42 @@
 	"bugs": {
 		"url": "https://github.com/es-shims/math-intrinsics/issues"
 	},
-	"homepage": "https://github.com/es-shims/math-intrinsics#readme"
+	"homepage": "https://github.com/es-shims/math-intrinsics#readme",
+	"devDependencies": {
+		"@arethetypeswrong/cli": "^0.17.1",
+		"@ljharb/eslint-config": "^21.1.1",
+		"@ljharb/tsconfig": "^0.2.2",
+		"@types/for-each": "^0.3.3",
+		"@types/object-inspect": "^1.13.0",
+		"@types/tape": "^5.6.5",
+		"auto-changelog": "^2.5.0",
+		"eclint": "^2.8.1",
+		"es-value-fixtures": "^1.5.0",
+		"eslint": "^8.8.0",
+		"evalmd": "^0.0.19",
+		"for-each": "^0.3.3",
+		"in-publish": "^2.0.1",
+		"npmignore": "^0.3.1",
+		"nyc": "^10.3.2",
+		"object-inspect": "^1.13.3",
+		"safe-publish-latest": "^2.0.0",
+		"tape": "^5.9.0",
+		"typescript": "next"
+	},
+	"auto-changelog": {
+		"output": "CHANGELOG.md",
+		"template": "keepachangelog",
+		"unreleased": false,
+		"commitLimit": false,
+		"backfillLimit": false,
+		"hideCredit": true
+	},
+	"publishConfig": {
+		"ignore": [
+			".github/workflows"
+		]
+	},
+	"engines": {
+		"node": ">= 0.4"
+	}
 }
diff --git a/pow.d.ts b/pow.d.ts
new file mode 100644
index 0000000..5873c44
--- /dev/null
+++ b/pow.d.ts
@@ -0,0 +1 @@
+export = Math.pow;
\ No newline at end of file
diff --git a/pow.js b/pow.js
new file mode 100644
index 0000000..c0a4103
--- /dev/null
+++ b/pow.js
@@ -0,0 +1,4 @@
+'use strict';
+
+/** @type {import('./pow')} */
+module.exports = Math.pow;
diff --git a/sign.d.ts b/sign.d.ts
new file mode 100644
index 0000000..c49ceca
--- /dev/null
+++ b/sign.d.ts
@@ -0,0 +1,3 @@
+declare function sign(x: number): number;
+
+export = sign;
\ No newline at end of file
diff --git a/sign.js b/sign.js
new file mode 100644
index 0000000..9e5173c
--- /dev/null
+++ b/sign.js
@@ -0,0 +1,11 @@
+'use strict';
+
+var $isNaN = require('./isNaN');
+
+/** @type {import('./sign')} */
+module.exports = function sign(number) {
+	if ($isNaN(number) || number === 0) {
+		return number;
+	}
+	return number < 0 ? -1 : +1;
+};
diff --git a/test/index.js b/test/index.js
new file mode 100644
index 0000000..107ed72
--- /dev/null
+++ b/test/index.js
@@ -0,0 +1,157 @@
+'use strict';
+
+var test = require('tape');
+var v = require('es-value-fixtures');
+var forEach = require('for-each');
+var inspect = require('object-inspect');
+
+var abs = require('../abs');
+var floor = require('../floor');
+var isFinite = require('../isFinite');
+var isInteger = require('../isInteger');
+var isNaN = require('../isNaN');
+var isNegativeZero = require('../isNegativeZero');
+var max = require('../max');
+var min = require('../min');
+var pow = require('../pow');
+var sign = require('../sign');
+
+var maxValue = require('../constants/maxValue');
+var maxSafeInteger = require('../constants/maxSafeInteger');
+
+test('abs', function (t) {
+	t.equal(abs(-1), 1, 'abs(-1) === 1');
+	t.equal(abs(+1), 1, 'abs(+1) === 1');
+	t.equal(abs(+0), +0, 'abs(+0) === +0');
+	t.equal(abs(-0), +0, 'abs(-0) === +0');
+
+	t.end();
+});
+
+test('floor', function (t) {
+	t.equal(floor(-1.1), -2, 'floor(-1.1) === -2');
+	t.equal(floor(+1.1), 1, 'floor(+1.1) === 1');
+	t.equal(floor(+0), +0, 'floor(+0) === +0');
+	t.equal(floor(-0), -0, 'floor(-0) === -0');
+	t.equal(floor(-Infinity), -Infinity, 'floor(-Infinity) === -Infinity');
+	t.equal(floor(Number(Infinity)), Number(Infinity), 'floor(+Infinity) === +Infinity');
+	t.equal(floor(NaN), NaN, 'floor(NaN) === NaN');
+	t.equal(floor(0), +0, 'floor(0) === +0');
+	t.equal(floor(-0), -0, 'floor(-0) === -0');
+	t.equal(floor(1), 1, 'floor(1) === 1');
+	t.equal(floor(-1), -1, 'floor(-1) === -1');
+	t.equal(floor(1.1), 1, 'floor(1.1) === 1');
+	t.equal(floor(-1.1), -2, 'floor(-1.1) === -2');
+	t.equal(floor(maxValue), maxValue, 'floor(maxValue) === maxValue');
+	t.equal(floor(maxSafeInteger), maxSafeInteger, 'floor(maxSafeInteger) === maxSafeInteger');
+
+	t.end();
+});
+
+test('isFinite', function (t) {
+	t.equal(isFinite(0), true, 'isFinite(+0) === true');
+	t.equal(isFinite(-0), true, 'isFinite(-0) === true');
+	t.equal(isFinite(1), true, 'isFinite(1) === true');
+	t.equal(isFinite(Infinity), false, 'isFinite(Infinity) === false');
+	t.equal(isFinite(-Infinity), false, 'isFinite(-Infinity) === false');
+	t.equal(isFinite(NaN), false, 'isFinite(NaN) === false');
+
+	forEach(v.nonNumbers, function (nonNumber) {
+		t.equal(isFinite(nonNumber), false, 'isFinite(' + inspect(nonNumber) + ') === false');
+	});
+
+	t.end();
+});
+
+test('isInteger', function (t) {
+	forEach([].concat(
+		// @ts-expect-error TS sucks with concat
+		v.nonNumbers,
+		v.nonIntegerNumbers
+	), function (nonInteger) {
+		t.equal(isInteger(nonInteger), false, 'isInteger(' + inspect(nonInteger) + ') === false');
+	});
+
+	t.end();
+});
+
+test('isNaN', function (t) {
+	forEach([].concat(
+		// @ts-expect-error TS sucks with concat
+		v.nonNumbers,
+		v.infinities,
+		v.zeroes,
+		v.integerNumbers
+	), function (nonNaN) {
+		t.equal(isNaN(nonNaN), false, 'isNaN(' + inspect(nonNaN) + ') === false');
+	});
+
+	t.equal(isNaN(NaN), true, 'isNaN(NaN) === true');
+
+	t.end();
+});
+
+test('isNegativeZero', function (t) {
+	t.equal(isNegativeZero(-0), true, 'isNegativeZero(-0) === true');
+	t.equal(isNegativeZero(+0), false, 'isNegativeZero(+0) === false');
+	t.equal(isNegativeZero(1), false, 'isNegativeZero(1) === false');
+	t.equal(isNegativeZero(-1), false, 'isNegativeZero(-1) === false');
+	t.equal(isNegativeZero(NaN), false, 'isNegativeZero(NaN) === false');
+	t.equal(isNegativeZero(Infinity), false, 'isNegativeZero(Infinity) === false');
+	t.equal(isNegativeZero(-Infinity), false, 'isNegativeZero(-Infinity) === false');
+
+	forEach(v.nonNumbers, function (nonNumber) {
+		t.equal(isNegativeZero(nonNumber), false, 'isNegativeZero(' + inspect(nonNumber) + ') === false');
+	});
+
+	t.end();
+});
+
+test('max', function (t) {
+	t.equal(max(1, 2), 2, 'max(1, 2) === 2');
+	t.equal(max(1, 2, 3), 3, 'max(1, 2, 3) === 3');
+	t.equal(max(1, 2, 3, 4), 4, 'max(1, 2, 3, 4) === 4');
+	t.equal(max(1, 2, 3, 4, 5), 5, 'max(1, 2, 3, 4, 5) === 5');
+	t.equal(max(1, 2, 3, 4, 5, 6), 6, 'max(1, 2, 3, 4, 5, 6) === 6');
+	t.equal(max(1, 2, 3, 4, 5, 6, 7), 7, 'max(1, 2, 3, 4, 5, 6, 7) === 7');
+
+	t.end();
+});
+
+test('min', function (t) {
+	t.equal(min(1, 2), 1, 'min(1, 2) === 1');
+	t.equal(min(1, 2, 3), 1, 'min(1, 2, 3) === 1');
+	t.equal(min(1, 2, 3, 4), 1, 'min(1, 2, 3, 4) === 1');
+	t.equal(min(1, 2, 3, 4, 5), 1, 'min(1, 2, 3, 4, 5) === 1');
+	t.equal(min(1, 2, 3, 4, 5, 6), 1, 'min(1, 2, 3, 4, 5, 6) === 1');
+
+	t.end();
+});
+
+test('pow', function (t) {
+	t.equal(pow(2, 2), 4, 'pow(2, 2) === 4');
+	t.equal(pow(2, 3), 8, 'pow(2, 3) === 8');
+	t.equal(pow(2, 4), 16, 'pow(2, 4) === 16');
+	t.equal(pow(2, 5), 32, 'pow(2, 5) === 32');
+	t.equal(pow(2, 6), 64, 'pow(2, 6) === 64');
+	t.equal(pow(2, 7), 128, 'pow(2, 7) === 128');
+	t.equal(pow(2, 8), 256, 'pow(2, 8) === 256');
+	t.equal(pow(2, 9), 512, 'pow(2, 9) === 512');
+	t.equal(pow(2, 10), 1024, 'pow(2, 10) === 1024');
+
+	t.end();
+});
+
+test('sign', function (t) {
+	t.equal(sign(-1), -1, 'sign(-1) === -1');
+	t.equal(sign(+1), +1, 'sign(+1) === +1');
+	t.equal(sign(+0), +0, 'sign(+0) === +0');
+	t.equal(sign(-0), -0, 'sign(-0) === -0');
+	t.equal(sign(NaN), NaN, 'sign(NaN) === NaN');
+	t.equal(sign(Infinity), +1, 'sign(Infinity) === +1');
+	t.equal(sign(-Infinity), -1, 'sign(-Infinity) === -1');
+	t.equal(sign(maxValue), +1, 'sign(maxValue) === +1');
+	t.equal(sign(maxSafeInteger), +1, 'sign(maxSafeInteger) === +1');
+
+	t.end();
+});
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..b131000
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,3 @@
+{
+	"extends": "@ljharb/tsconfig",
+}