raccourci.

Try it

Install

Install from npm. TypeScript declarations and ESM, CommonJS, and browser builds are included.

npm install raccourci

Use the same function in vanilla TypeScript, React, or Node.js:

import { resolveAmount } from 'raccourci';

resolveAmount('half + 10', 200); // 110
resolveAmount('100 - (5*3)');    // 85

Download the package archive ↓

For offline installation: npm install ./raccourci-0.1.0.tgz

Use a CDN

Load raccourci directly from unpkg or jsDelivr. Both examples are pinned to version 0.1.0.

Automatic inputs

No build step. Mark a text input to convert its value on blur or Enter.

<script src="https://unpkg.com/raccourci@0.1.0/dist/umd/index.cjs"></script>
<input type="text" data-resolve-amount="200">

Typing 2/3 becomes 133.3333. Optional attributes: data-resolve-locale, data-resolve-precision, and data-resolve-rounding.

ES modules

Import the parser for vanilla modules, React, or other framework-controlled inputs.

<script type="module">
  import { resolveAmount } from 'https://unpkg.com/raccourci@0.1.0/dist/esm/index.js';
  console.log(resolveAmount('half + 10', 200)); // 110
</script>

You can also download the browser build to host it yourself.

A few shortcuts

Invalid expressions return null. A standalone fraction is a share of the reference; division inside a larger expression follows normal arithmetic. Results use JavaScript numbers and are not clamped.