How to Use Jev: Moderation with the Jev API in TypeScript

Jev is a decision model from TypeSafe. It takes unstructured input and gives you typed judgments with probabilities in return, and your code decides what to do next. This guide shows how to use Jev on a problem of your own, worked end to end on one example, moderating listings on a marketplace in TypeScript. Okay, so you understand what Jev is for and feel like you’re on the right track. Now, the question is: what does a Jev request look like under the hood? Let’s start from the beginning. Every Jev request consists of a state and a set of questions. The state is the input that Jev should evaluate. It could be a string, JSON object, or array of strings. If you’re attempting to evaluate a sequence of items, such as messages in a conversation, the array is going to be the way to go. The questions are a list of judgments that Jev should perform on the state. A question consists of two elements, namely, instructions and criteria. The instructions describe the judgment that should be performed. The criteria describe the possible answers. When evaluating the state, Jev will determine how well each of the criteria fits…