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Add node.js app insights package (#64)
* init * add node.js package * fix lint * add exp telemetry fields * update * update * align with other FM to produce True/False instead of true/false
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‎.github/workflows/ci.yml‎

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- name: Run lint check for feature-management-applicationinsights-browser
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run: npm run lint
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working-directory: sdk/feature-management-applicationinsights-browser
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working-directory: sdk/feature-management-applicationinsights-browser
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- name: Build feature-management-applicationinsights-node
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run: npm run build
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working-directory: sdk/feature-management-applicationinsights-node
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- name: Run lint check for feature-management-applicationinsights-node
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run: npm run lint
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working-directory: sdk/feature-management-applicationinsights-node

‎scripts/build-and-pack.sh‎

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npm pack
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echo "copy $PACKAGE package to $PROJECT_BASE_DIR"
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cp "$PACKAGE_DIR"/*.tgz "$PROJECT_BASE_DIR"
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cp "$PACKAGE_DIR"/*.tgz "$PROJECT_BASE_DIR"
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PACKAGE="feature-management-applicationinsights-node"
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PACKAGE_DIR="$SDK_DIR/$PACKAGE"
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echo "Building package $PACKAGE in $PACKAGE_DIR"
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cd "$PACKAGE_DIR"
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echo "npm run build in $PACKAGE_DIR"
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npm run build
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echo "npm pack in $PACKAGE_DIR"
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npm pack
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echo "copy $PACKAGE package to $PROJECT_BASE_DIR"
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cp "$PACKAGE_DIR"/*.tgz "$PROJECT_BASE_DIR"

‎sdk/feature-management-applicationinsights-browser/.eslintrc‎

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{
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"env": {
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"browser": true,
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"commonjs": true,
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"es2021": true,
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"node": true,
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"mocha": true
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},
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"extends": [

‎sdk/feature-management-applicationinsights-browser/README.md‎

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## Getting Started
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### Prerequisites
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- Node.js LTS version
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### Usage
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``` javascript

‎sdk/feature-management-applicationinsights-browser/src/telemetry.ts‎

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// Copyright (c) Microsoft Corporation.
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// Licensed under the MIT license.
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import { EvaluationResult, VariantAssignmentReason } from "@microsoft/feature-management";
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import { EvaluationResult, createFeatureEvaluationEventProperties } from "@microsoft/feature-management";
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import { ApplicationInsights, IEventTelemetry } from "@microsoft/applicationinsights-web";
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import { EVALUATION_EVENT_VERSION } from "./version.js";
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const VERSION = "Version";
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const FEATURE_NAME = "FeatureName";
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const ENABLED = "Enabled";
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const TARGETING_ID = "TargetingId";
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const VARIANT = "Variant";
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const VARIANT_ASSIGNMENT_REASON = "VariantAssignmentReason";
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const DEFAULT_WHEN_ENABLED = "DefaultWhenEnabled";
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const VARIANT_ASSIGNMENT_PERCENTAGE = "VariantAssignmentPercentage";
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const FEATURE_EVALUATION_EVENT_NAME = "FeatureEvaluation";
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/**
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* Creates a telemetry publisher that sends feature evaluation events to Application Insights.
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* @param client The Application Insights telemetry client.
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* @returns A callback function that takes an evaluation result and tracks an event with the evaluation details.
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*/
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export function createTelemetryPublisher(client: ApplicationInsights): (event: EvaluationResult) => void {
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return (event: EvaluationResult) => {
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if (event.feature === undefined) {
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export function createTelemetryPublisher(client: ApplicationInsights): (result: EvaluationResult) => void {
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return (result: EvaluationResult) => {
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if (result.feature === undefined) {
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return;
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}
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const eventProperties = {
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[VERSION]: EVALUATION_EVENT_VERSION,
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[FEATURE_NAME]: event.feature ? event.feature.id : "",
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[ENABLED]: event.enabled.toString(),
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// Ensure targetingId is string so that it will be placed in customDimensions
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[TARGETING_ID]: event.targetingId ? event.targetingId.toString() : "",
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[VARIANT]: event.variant ? event.variant.name : "",
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[VARIANT_ASSIGNMENT_REASON]: event.variantAssignmentReason,
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};
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if (event.feature.allocation?.default_when_enabled) {
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eventProperties[DEFAULT_WHEN_ENABLED] = event.feature.allocation.default_when_enabled;
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}
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if (event.variantAssignmentReason === VariantAssignmentReason.DefaultWhenEnabled) {
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let percentileAllocationPercentage = 0;
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if (event.variant !== undefined && event.feature.allocation !== undefined && event.feature.allocation.percentile !== undefined) {
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for (const percentile of event.feature.allocation.percentile) {
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percentileAllocationPercentage += percentile.to - percentile.from;
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}
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}
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eventProperties[VARIANT_ASSIGNMENT_PERCENTAGE] = (100 - percentileAllocationPercentage).toString();
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}
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else if (event.variantAssignmentReason === VariantAssignmentReason.Percentile) {
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let percentileAllocationPercentage = 0;
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if (event.variant !== undefined && event.feature.allocation !== undefined && event.feature.allocation.percentile !== undefined) {
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for (const percentile of event.feature.allocation.percentile) {
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if (percentile.variant === event.variant.name) {
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percentileAllocationPercentage += percentile.to - percentile.from;
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}
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}
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}
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eventProperties[VARIANT_ASSIGNMENT_PERCENTAGE] = percentileAllocationPercentage.toString();
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}
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const metadata = event.feature.telemetry?.metadata;
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if (metadata) {
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for (const key in metadata) {
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if (!(key in eventProperties)) {
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eventProperties[key] = metadata[key];
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}
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}
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}
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const eventProperties = createFeatureEvaluationEventProperties(result);
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client.trackEvent({ name: FEATURE_EVALUATION_EVENT_NAME }, eventProperties);
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};
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}

‎sdk/feature-management-applicationinsights-browser/src/version.ts‎

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// Licensed under the MIT license.
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export const VERSION = "2.0.0-preview.2";
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export const EVALUATION_EVENT_VERSION = "1.0.0";

‎sdk/feature-management-applicationinsights-node/.eslintrc‎

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{
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"env": {
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"commonjs": true,
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"es2021": true,
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"node": true,
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"mocha": true
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},
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"extends": [
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"eslint:recommended",
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"plugin:@typescript-eslint/recommended"
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],
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"ignorePatterns": [
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],
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"overrides": [
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{
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"env": {
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"node": true
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},
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"files": [
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".eslintrc.{js,cjs}"
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],
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"parserOptions": {
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"sourceType": "script"
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}
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}
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],
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"parser": "@typescript-eslint/parser",
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"parserOptions": {
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"ecmaVersion": "latest"
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},
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"plugins": [
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"@typescript-eslint"
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],
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"rules": {
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"quotes": [
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"error",
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"double",
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{
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"avoidEscape": true
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}
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],
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"@typescript-eslint/no-explicit-any": "off",
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"eol-last": [
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"error",
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"always"
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],
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"no-trailing-spaces": "error",
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"space-before-blocks": [
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"error",
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"always"
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],
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"no-multi-spaces": "error",
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"no-multiple-empty-lines": [
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"error",
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{
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"max": 1
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}
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],
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"semi": ["error", "always"]
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}
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}

‎sdk/feature-management-applicationinsights-node/LICENSE‎

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MIT License
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Copyright (c) Microsoft Corporation.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE

‎sdk/feature-management-applicationinsights-node/README.md‎

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# Microsoft Feature Management Application Insights Plugin for Browser
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Feature Management Application Insights Plugin for Browser provides a solution for sending feature flag evaluation events produced by the Feature Management library.
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## Getting Started
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### Prerequisites
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- Node.js LTS version
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### Usage
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``` javascript
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import appInsights from "applicationinsights";
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import { FeatureManager, ConfigurationObjectFeatureFlagProvider } from "@microsoft/feature-management";
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import { trackEvent, publishTelemetry } from "@microsoft/feature-management-applicationinsights-node";
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appInsights.setup(CONNECTION_STRING)
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.start();
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const publishTelemetry = createTelemetryPublisher(appInsights.defaultClient);
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const provider = new ConfigurationObjectFeatureFlagProvider(jsonObject);
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const featureManager = new FeatureManager(provider, {onFeatureEvaluated: publishTelemetry});
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// FeatureEvaluation event will be emitted when a feature flag is evaluated
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featureManager.getVariant("TestFeature", {userId : TARGETING_ID}).then((variant) => { /* do something*/ });
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// Emit a custom event with targeting id attached.
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trackEvent(appInsights.defaultClient, TARGETING_ID, {name: "TestEvent"});
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```
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## Contributing
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This project welcomes contributions and suggestions. Most contributions require you to agree to a
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Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us
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the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.
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When you submit a pull request, a CLA bot will automatically determine whether you need to provide
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a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions
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provided by the bot. You will only need to do this once across all repos using our CLA.
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This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
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For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or
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contact [[email protected]](mailto:[email protected]) with any additional questions or comments.
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## Trademarks
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This project may contain trademarks or logos for projects, products, or services. Authorized use of Microsoft
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trademarks or logos is subject to and must follow
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[Microsoft's Trademark & Brand Guidelines](https://www.microsoft.com/en-us/legal/intellectualproperty/trademarks/usage/general).
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Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship.
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Any use of third-party trademarks or logos are subject to those third-party's policies.

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