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Abraham Williams • Edited

How many ways are there to check if something is 13? More than you might think.

GitHub logo jezen / is-thirteen

Check if a number is equal to 13.

Special thanks to @casdr for the logo

is-thirteen

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An npm package to check if a number is equal to 13.

Installation

npm --save i is-thirteen

or

yarn add is-thirteen

Usage

const isThirteen = require('is-thirteen')
// PLEAS READ THE SOURCE CODE BECAuse we moved fast and broke things
i̶s̶T̶h̶i̶r̶t̶e̶e̶n̶(̶2̶5̶)̶;̶ ̶/̶/̶ ̶f̶a̶l̶s̶e̶
i̶s̶T̶h̶i̶r̶t̶e̶e̶n̶(̶1̶3̶)̶;̶ ̶/̶/̶ ̶t̶r̶u̶e̶
const is = require('is-thirteen')
// Now with elegant syntax.
is(13).thirteen(); // true
is(12.8).roughly.thirteen(); // true
is(6).within(10).of.thirteen(); // true
is(2003).yearOfBirth(); // true

// check your math skillz
is(4).plus(5).thirteen();      // false
is