math-interval-parser

Parse math interval

Usage no npm install needed!

<script type="module">
  import mathIntervalParser from 'https://cdn.skypack.dev/math-interval-parser';
</script>

README

Math interval parser

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Parse math interval. Notation is accepted as part of ISO 31-11.

Install

$ npm install --save math-interval-parser

Usage

import intervalParse from 'math-interval-parser';
// or `var intervalParse = require('math-interval-parser').default;

intervalParse('(-10,20.2]'); // or intervalParse(']-10,20.2]');
//=> {
//=>     from: {
//=>         value: -10,
//=>         included: false,
//=>     },
//=>     to: {
//=>         value: 20.2,
//=>         included: true
//=>     }
//=> }

intervalParse('[1e3,)'); // or intervalParse('[1e3,Infinity)');
//=> {
//=>     from: {
//=>         value: 1000,
//=>         included: true,
//=>     },
//=>     to: {
//=>         value: Infinity,
//=>         included: false
//=>     }
//=> }

See tests for more details.

License

MIT © Dmitry Semigradsky