feature-management/dist/src/feature-manager.js

Feature Flag Management

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FeatureManager = void 0;
require("reflect-metadata");
const feature_flag_store_1 = require("./feature-flag.store");
const constants_1 = require("./decorator/constants");
const container_1 = require("./container");
class FeatureManager {
    constructor(environment) {
        this.environment = environment;
    }
    async isEnabled(feature, context) {
        const featureName = typeof feature === 'string' ? feature : feature['name'];
        const featureFlagOptions = feature_flag_store_1.featureFlagStore.get(this.environment, featureName);
        if (!featureFlagOptions || !featureFlagOptions.enabled) {
            return false;
        }
        const strategies = featureFlagOptions?.strategies || [];
        for (const strategy of strategies) {
            const filterHandler = Reflect.getMetadata(constants_1.FEATURE_FILTER_METADATA, strategy.constructor);
            const filterHandlerInstance = container_1.containerProvider
                .resolveContainer()
                .get(filterHandler);
            const evaluatedResult = await filterHandlerInstance.evaluate(strategy, context);
            if (evaluatedResult)
                return true;
        }
        return !strategies.length;
    }
}
exports.FeatureManager = FeatureManager;
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