@showwhat/openfeature

OpenFeature provider for showwhat.

Bridge showwhat's rule engine to the standard OpenFeature Server SDK. Evaluate flags and config through OpenFeature clients using showwhat definitions.

Installation

npm install showwhat @showwhat/openfeature @openfeature/server-sdk

@openfeature/server-sdk is a peer dependency.

Quick start

import { OpenFeature } from "@openfeature/server-sdk";
import { ShowwhatProvider } from "@showwhat/openfeature";
import { MemoryData } from "showwhat";

const data = await MemoryData.fromYaml(yamlString);

await OpenFeature.setProviderAndWait(new ShowwhatProvider({ data }));

const client = OpenFeature.getClient();

const enabled = await client.getBooleanValue("checkout_v2", false, {
  env: "production",
});

Features

• All four evaluation types: boolean, string, number, object
• Automatic context mapping from OpenFeature to showwhat
• Custom condition support via evaluators option
• Lifecycle management (initialize / onClose)
• Error mapping to OpenFeature error codes
• Resolution reason tracking

Documentation

• OpenFeature Integration - provider options, context mapping, evaluation types, error mapping, and lifecycle