Picoassert NPM

picoassert

Perhaps the smallest Javascript assertion module

picoassert is a 113-byte Javascript assertion module based on nanoassert.

Usage

var assert = require("picoassert")

assert.eq(a, b, `${a} == ${b}`);   // Asserts `a` and `b` are equal.
assert.neq(a, b, `${a} != ${b}`);  // Asserts `a` and `b` are not equal.
assert.is(a, `(!!${a}) === true`); // Asserts `a` is truthy.

Why

The nanoassert repository README describes the author's complaint about the excessive size of the assert module, the standard assertion library. However, even the nanoassert library was unnecessarily large, which led to the creation of picoassert.

This library is also an open golf challenge. Please feel free to submit pull requests if you're able to shorten the code!

Install

npm install picoassert

Content Delivery Network (CDN)

The picoassert library can be imported via unpkg as shown below:

<script type="application/javascript">var module={};</script>
<script src="https://unpkg.com/picoassert/index.js"></script>
<script type="application/javascript">
  var assert = module.exports;
  // Library is imported as `assert`!
</script>

Be aware that picoassert is a CommonJS module and therefore uses module.exports; before importing the script, you will need to define module or use a CommonJS-compatible module loader.