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 title: Eval++
 date: 2026-02-18 17:10:00
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Dear friends, I present to you the next generation in software
development: eval++!

Inspired by GitHub's recent release of their Copilot SDK [0], I
decided to take a stab at one of the most controversial functions
of all time and make it better, using the power of AI.

Eval++ is an LLM-powered replacement of JavaScript's `eval()`
function that can probably handle any code or code-like text you
throw at it, marking our ascension from the purgatory that is
deterministic software development to a new enlightenment of
**"anything codes, anything goes."**

So far, eval++ supports only JavaScript, but Python, PHP, and Ruby
are all on the evolutionary roadmap.

Here's how it works:

```javascript
import evil from '@zachflower/eval-plus-plus';

// Evaluate code
const result = await evil('2 + 2');
console.log(result); // "4"

// Analyze complex code
const analysis = await evil(`
  function fibonacci(n) {
    if (n <= 1) return n;
    return fibonacci(n - 1) + fibonacci(n - 2);
  }
  fibonacci(10)
`);
```

The result of the above will be *exactly* what you expect: the
number `55`. Hell, it doesn't even have to be valid JavaScript
code! You can throw in some Python or Ruby and it will still give
you a result, because eval++ is powered by an LLM that can
understand multiple programming languages.

```javascript
const result = await evil(`
  def fibonacci(n):
    if n <= 1:
        return n
      return fibonacci(n - 1) + fibonacci(n - 2)
  fibonacci(10)
`);
```

Same result, different language! But what makes eval++ truly
revolutionary is that it can also handle code that isn't even code!
For example:

```javascript
const result = await evil('What is the meaning of life, the
universe, and everything?');
```

The result of this will probably be `42`, but it might be something
entirely different, depending on the whims of the AI. The point is
that with eval++, you can throw anything at it and it will give you
*something* back, whether it's a valid JavaScript expression or a
philosophical question.

So, if you are interested in trying out eval++, you can learn more
about it and get the code on GitHub here: Eval++ Website [1] and
Eval++ GitHub Repository [2].

---
[0]: https://github.blog/news-insights/company-news/build-an-agent-into-any-app-with-the-github-copilot-sdk/
[1]: https://zachflower.github.io/eval-plus-plus/
[2]: https://github.com/zachflower/eval-plus-plus
---


EOF