joe-crick / simple-assertion

Simple Assertion

I've wanted to do DbC in JS for a while. There are libs out there, but they're out of date and do too much. All I really needed was to have the ability to test the truth value of propositions. Hence, Simple Assertion.

Using Simple Assertion, you can define your pre and post conditions as function arguments, like so:

pre(typeof myVar === 'number', myVar > 0 && myVar < 100, myVar %2 === 0)

const someOtherVar = myVar + 1;

post(someOtherVar === myVar + 1)

Simple Assertion evaluates the truth values of arguments it receives. If it encounters a false value it will throw an error, and create an error object indicating what condition failed (pre | post).

finis.