is async supported?

[jonathanstanley]

nice work!

I was wondering if there is an approach that would handle async?

let fn = createFn('a + b(3)')
fn({ a: 2,b:x=>Promise.resolve(x)}) // 5

also, it isn't clear why github repo uses createFn and npm uses script in the first example

[dy]

Ah, I updated readme in github after publishing to npm. Take github as the latest doc.
As for async - it depends on what kind of async you want.

• You can try reimplementing JS async syntax in your mini-language like a + await b(3), for that you'd need to define unary async operator.
• You can make all evaluators async by default, so that they would wait for result of async function. This way you'd write normal expressions a + b(3), but they would be async under the hood. For that you'd need to define operator('+', async (a,b) => await a + await b ). (I need to check if that'd work - worst case you'd need to write own evaluator of AST, which is not very difficult, example is here)

[jonathanstanley]

thanks!