@reliance/feature-flags/src/isFeatureEnabled.js

A package for determining feature flag status based on environment variables or flag objects.

const { features } = require("./setFeature");

function isBoolean(value) {
  return typeof value === "boolean";
}

function isFeatureEnabled(feature, params = {}) {
  const featureFunction = features[feature];
  if (typeof featureFunction === "function") {
    try {
      const result = featureFunction(params);
      return isBoolean(result) ? result : false;
    } catch (e) {
      console.error(`Error evaluating feature function for ${feature}:`, e);
      return false;
    }
  }

  return process.env[feature] === "true";
}

module.exports = { isFeatureEnabled };