feat: Add isFunction and isPromise

.eslintrc.json

@@ -1,9 +1,16 @@
 {
     "env": {
+		"node": true,
         "browser": true,
-        "esnext": true
+		"jest": true,
+        "es2016": true
     },
-    "extends": "standard-with-typescript",
+	"plugins": ["@typescript-eslint"],
+	"extends": [
+		"eslint:recommended",
+		"plugin:@typescript-eslint/recommended"
+	],
+	"parser": "@typescript-eslint/parser",
     "parserOptions": {
         "ecmaVersion": "latest",
         "sourceType": "module"
@@ -14,6 +21,8 @@
 		"object-curly-spacing": [2, "always"],
 		"semi": [2, "never"],
 		"quotes": [2, "single"],
-		"indent": [2, "tab"]
+		"indent": [2, "tab"],
+		"@typescript-eslint/indent": [2, "tab"],
+		"@typescript-eslint/ban-types": [0]
 	}
 }

.gitignore

@@ -1,5 +1,4 @@
 /lib/
-.env
 
 # Logs
 logs
@@ -26,28 +25,10 @@ lib-cov
 coverage
 *.lcov
 
-# nyc test coverage
-.nyc_output
-
-# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# Bower dependency directory (https://bower.io/)
-bower_components
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
-
 # Dependency directories
 node_modules/
 jspm_packages/
 
-# Snowpack dependency directory (https://snowpack.dev/)
-web_modules/
-
 # TypeScript cache
 *.tsbuildinfo
 
@@ -57,77 +38,14 @@ web_modules/
 # Optional eslint cache
 .eslintcache
 
-# Optional stylelint cache
-.stylelintcache
-
-# Microbundle cache
-.rpt2_cache/
-.rts2_cache_cjs/
-.rts2_cache_es/
-.rts2_cache_umd/
-
-# Optional REPL history
-.node_repl_history
-
 # Output of 'npm pack'
 *.tgz
 
-# Yarn Integrity file
-.yarn-integrity
-
 # dotenv environment variable files
 .env
 .env.development.local
 .env.test.local
 .env.production.local
 .env.local
 
-# parcel-bundler cache (https://parceljs.org/)
-.cache
-.parcel-cache
-
-# Next.js build output
-.next
-out
-
-# Nuxt.js build / generate output
-.nuxt
-dist
-
-# Gatsby files
-.cache/
-# Comment in the public line in if your project uses Gatsby and not Next.js
-# https://nextjs.org/blog/next-9-1#public-directory-support
-# public
-
-# vuepress build output
-.vuepress/dist
-
-# vuepress v2.x temp and cache directory
-.temp
 .cache
-
-# Docusaurus cache and generated files
-.docusaurus
-
-# Serverless directories
-.serverless/
-
-# FuseBox cache
-.fusebox/
-
-# DynamoDB Local files
-.dynamodb/
-
-# TernJS port file
-.tern-port
-
-# Stores VSCode versions used for testing VSCode extensions
-.vscode-test
-
-# yarn v2
-.yarn/cache
-.yarn/unplugged
-.yarn/build-state.yml
-.yarn/install-state.gz
-.pnp.*

__tests__/tests.ts

@@ -0,0 +1,110 @@
+import isFunction from '../src/utils/is-function'
+import isPromise from '../src/utils/is-promise'
+
+describe('isFunction', () => { tests('function', isFunction) })
+describe('isPromise', () => { tests('promise', isPromise) })
+
+function tests (truthy: string, fn: (value: unknown) => boolean) {
+	test('function', () => {
+		expect(fn(() => {})).toBe(truthy === 'function')
+	})
+	test('object', () => {
+		expect(fn({})).toBe(truthy === 'object')
+	})
+	test('string', () => {
+		expect(fn('')).toBe(truthy === 'string')
+	})
+	test('number', () => {
+		expect(fn(0)).toBe(truthy === 'number')
+	})
+	test('boolean', () => {
+		expect(fn(true)).toBe(truthy === 'boolean')
+	})
+	test('undefined', () => {
+		expect(fn(undefined)).toBe(truthy === 'undefined')
+	})
+	test('null', () => {
+		expect(fn(null)).toBe(truthy === 'null')
+	})
+	test('array', () => {
+		expect(fn([])).toBe(truthy === 'array')
+	})
+	test('symbol', () => {
+		expect(fn(Symbol())).toBe(truthy === 'symbol')
+	})
+	test('bigint', () => {
+		expect(fn(1n)).toBe(truthy === 'bigint')
+	})
+	test('regexp', () => {
+		expect(fn(/a/)).toBe(truthy === 'regexp')
+	})
+	test('date', () => {
+		expect(fn(new Date())).toBe(truthy === 'date')
+	})
+	test('error', () => {
+		expect(fn(new Error())).toBe(truthy === 'error')
+	})
+	test('map', () => {
+		expect(fn(new Map())).toBe(truthy === 'map')
+	})
+	test('set', () => {
+		expect(fn(new Set())).toBe(truthy === 'set')
+	})
+	test('weakmap', () => {
+		expect(fn(new WeakMap())).toBe(truthy === 'weakmap')
+	})
+	test('weakset', () => {
+		expect(fn(new WeakSet())).toBe(truthy === 'weakset')
+	})
+	test('int8array', () => {
+		expect(fn(new Int8Array())).toBe(truthy === 'int8array')
+	})
+	test('uint8array', () => {
+		expect(fn(new Uint8Array())).toBe(truthy === 'uint8array')
+	})
+	test('uint8clampedarray', () => {
+		expect(fn(new Uint8ClampedArray())).toBe(truthy === 'uint8clampedarray')
+	})
+	test('int16array', () => {
+		expect(fn(new Int16Array())).toBe(truthy === 'int16array')
+	})
+	test('uint16array', () => {
+		expect(fn(new Uint16Array())).toBe(truthy === 'uint16array')
+	})
+	test('int32array', () => {
+		expect(fn(new Int32Array())).toBe(truthy === 'int32array')
+	})
+	test('uint32array', () => {
+		expect(fn(new Uint32Array())).toBe(truthy === 'uint32array')
+	})
+	test('float32array', () => {
+		expect(fn(new Float32Array())).toBe(truthy === 'float32array')
+	})
+	test('float64array', () => {
+		expect(fn(new Float64Array())).toBe(truthy === 'float64array')
+	})
+	test('bigint64array', () => {
+		expect(fn(new BigInt64Array())).toBe(truthy === 'bigint64array')
+	})
+	test('biguint64array', () => {
+		expect(fn(new BigUint64Array())).toBe(truthy === 'biguint64array')
+	})
+	test('arraybuffer', () => {
+		expect(fn(new ArrayBuffer(2))).toBe(truthy === 'arraybuffer')
+	})
+	test('dataview', () => {
+		expect(fn(new DataView(new ArrayBuffer(2)))).toBe(truthy === 'dataview')
+	})
+	test('promise', () => {
+		expect(fn(Promise.resolve())).toBe(truthy === 'promise')
+	})
+	test('generator', () => {
+		expect(fn(function * () {})).toBe(truthy === 'generator')
+	})
+	test('generatorfunction', () => {
+		expect(fn(function * () {})).toBe(truthy === 'generatorfunction')
+	})
+	test('asyncfunction', () => {
+		expect(fn(async () => {})).toBe(truthy === 'asyncfunction')
+	})
+}

jest.config.ts

@@ -0,0 +1,17 @@
+/**
+ * For a detailed explanation regarding each configuration property, visit:
+ * https://jestjs.io/docs/configuration
+ */
+
+import type { Config } from 'jest'
+
+const config: Config = {
+	preset: 'ts-jest',
+	testEnvironment: 'jest-environment-node',
+	clearMocks: true,
+	collectCoverage: true,
+	coverageDirectory: 'coverage',
+	coverageProvider: 'v8',
+}
+
+export default config