initial commit

.editorconfig

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+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2

.gitignore

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+node_modules/
+dist/

.npmignore

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+lib/

.travis.yml

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+language: node_js
+node_js:
+  - "node"
+branches:
+  only:
+    - master
+env:
+  - TEST_SUITE=lint
+  - TEST_SUITE=test
+  - TEST_SUITE=build
+script:
+  - npm run $TEST_SUITE

LICENSE

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+Copyright 2019 CEZAR AUGUSTO <boss@cezaraugusto.net>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+[![Written in TypeScript](https://img.shields.io/badge/TypeScript-100%25-blue.svg)](https://github.com/cezaraugusto/random-from-array) [![npm](https://img.shields.io/npm/v/random-from-array.svg)]() [![Build Status](https://travis-ci.org/cezaraugusto/random-from-array.svg?branch=master)](https://travis-ci.org/cezaraugusto/random-from-array)
+
+> TypeScript module with type definition support by default. Also works with other JavaScript projects.
+
+# random-from-array
+
+Given an array, return a random value from it.
+
+## Useful when
+
+An array of elements must output a random value.
+
+## Installation
+
+```sh
+$ npm i random-from-array
+```
+
+## Usage
+
+[Try it on CodeSandbox](https://codesandbox.io/s/20pp8xjlor)
+
+```js
+import randomFromArray from 'random-from-array'
+
+randomFromArray(['bossa nova', 'jazz', 'rock']) // one of: 'bossa nova' or 'jazz' or 'rock'
+
+// also works with an array of objects
+const arrayOfObj = [
+  { value: 'bossa nova' },
+  { value: 'jazz' },
+  { value: 'rock' }
+]
+
+randomFromArray(arrayOfObj) // one of: { value: 'bossa nova' } or { value: 'jazz' } or { value: 'rock' }
+```
+
+## License
+
+random-from-array © [Cezar Augusto](https://twitter.com/cezaraugusto). Released under the MIT License.

jest.config.json

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+{
+  "preset": "ts-jest",
+  "testMatch": ["<rootDir>/tests/index.test.ts"]
+}

lib/index.ts

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+/**
+ * Given an array, return a random value from it
+ * @returns {any} - a single random value from the input's array
+*/
+export default (arr: Array<any>): any => arr[Math.floor((Math.random() * arr.length))]