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chore: adding shopify oxygen example
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‎package.json‎

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"contract-tests",
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"packages/sdk/combined-browser",
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"packages/sdk/shopify-oxygen",
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"packages/sdk/shopify-oxygen/contract-tests"
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"packages/sdk/shopify-oxygen/contract-tests",
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"packages/sdk/shopify-oxygen/example"
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],
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"private": true,
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"scripts": {

‎packages/sdk/shopify-oxygen/example/README.md‎

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# LaunchDarkly sample Shopify Oxygen application
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We've built a simple console application that demonstrates how this LaunchDarkly SDK works.
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Below, you'll find the build procedure. For more comprehensive instructions, you can visit your [Quickstart page](https://app.launchdarkly.com/quickstart#/).
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<!-- NOTE: no official docs in LD website yet
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or the [{name of SDK} reference guide](https://docs.launchdarkly.com/sdk/{path to the page for that SDK}).
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-->
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This demo requires `Node >= 22.0.0` and `yarn@^3.4.1`
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## Build instructions
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1. Edit [`src/index.ts`](src/index.ts) and set the value of `sdkKey` to your LaunchDarkly SDK key.
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```
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const sdkKey = "1234567890abcdef";
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```
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2. If there is an existing boolean feature flag in your LaunchDarkly project that
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you want to evaluate, set `flagKey` to the flag key:
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```
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const flagKey = "my-flag-key";
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```
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> Otherwise, `sample-feature` will be used by default.
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3. On the command line, run `yarn start`, You should receive the message:
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```
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The {flagKey} feature flag evaluates to {flagValue}.
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```
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The application will run continuously and react to the flag changes in LaunchDarkly.

‎packages/sdk/shopify-oxygen/example/app.js‎

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import {createMiniOxygen} from '@shopify/mini-oxygen';
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/**
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* This is script is a simple runner for our example app. This script will run
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* the compiled example on a local worker implementation to emulate a Oxygen worker runtime.
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*
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* For the actual example implementation, see the src/index.ts file.
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*/
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const printValueAndBanner = (flagKey, flagValue) => {
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console.log(`*** The '${flagKey}' feature flag evaluates to ${flagValue}.`);
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if (flagValue) {
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console.log(
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` ██
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██
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████████
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███████
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██ LAUNCHDARKLY █
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███████
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████████
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██
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██
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`,
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);
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}
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}
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const main = async () => {
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// NOTE: you will see logging coming from mini-oxygen's default request hook.
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// https://github.com/Shopify/hydrogen/blob/5a38948133766e358c5f357f52562f6fdcfe7969/packages/mini-oxygen/src/worker/index.ts#L225
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const miniOxygen = createMiniOxygen({
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debug: false,
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workers: [
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{
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name: 'main',
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modules: true,
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scriptPath: 'dist/index.js'
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},
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],
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});
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miniOxygen.ready.then(() => {
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console.log('Oxygen worker is started...');
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console.log('Dispatching fetch every 5 seconds. Press "q" or Ctrl+C to quit...');
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// Dispatch fetch every 5 seconds
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const interval = setInterval(() => {
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// NOTE: This is a bogus URL and will not be used in the actual fetch handler.
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// please see the src/index.ts file for the actual fetch handler.
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miniOxygen.dispatchFetch('https://localhost:8000')
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.then(d => d.json())
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.then(({flagValue, flagKey}) => {
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console.clear();
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printValueAndBanner(flagKey, flagValue);
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console.log('Press "q" or Ctrl+C to quit...')
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}).catch((err) => {
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console.log('Error dispatching fetch:', err.message);
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console.log('Press "q" or Ctrl+C to quit...')
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});
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}, 1000);
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// Handle keypresses for cleanup
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process.stdin.setRawMode(true);
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process.stdin.resume();
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process.stdin.setEncoding('utf8');
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process.stdin.on('data', async (key) => {
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// Handle Ctrl+C
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if (key === '\u0003') {
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clearInterval(interval);
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await miniOxygen.dispose();
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process.exit();
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}
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// Handle 'q' key
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if (key === 'q' || key === 'Q') {
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clearInterval(interval);
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await miniOxygen.dispose();
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process.exit();
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}
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});
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});
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}
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main().catch(console.error);

‎packages/sdk/shopify-oxygen/example/package.json‎

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{
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"name": "shopify-oxygen-sdk-example",
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"packageManager": "[email protected]",
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"scripts": {
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"build": "tsup",
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"clean": "rm -rf dist",
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"start": "yarn clean && yarn build && yarn node app.js"
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},
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"type": "module",
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"dependencies": {
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"@launchdarkly/shopify-oxygen-sdk": "latest",
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"@shopify/mini-oxygen": "^4.0.0"
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},
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"devDependencies": {
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"tsup": "^8.5.1"
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}
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}

‎packages/sdk/shopify-oxygen/example/src/index.ts‎

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import { init } from '@launchdarkly/shopify-oxygen-sdk';
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// Set sdkKey to your LaunchDarkly SDK key.
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const sdkKey = 'sample-sdk-key';
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// Set featureFlagKey to the feature flag key you want to evaluate.
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const flagKey = 'sample-feature';
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const context = {
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kind: 'user',
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key: 'example-user-key',
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name: 'Sandy'
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};
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const sdkOptions = {
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// See the README.md file for more information on the options.
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};
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export default {
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async fetch() {
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const ldClient = await init(sdkKey, sdkOptions);
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await ldClient.waitForInitialization({ timeout: 10 });
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const flagValue = await ldClient.variation(flagKey, context, false);
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return new Response(JSON.stringify({ flagKey, flagValue }), { status: 200 });
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}
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};

‎packages/sdk/shopify-oxygen/example/tsconfig.json‎

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{
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"compilerOptions": {
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"allowSyntheticDefaultImports": true,
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"declaration": true,
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"declarationMap": true,
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"lib": ["es6"],
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"module": "es2022",
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"moduleResolution": "node",
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"noImplicitOverride": true,
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"outDir": "dist",
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"resolveJsonModule": true,
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"rootDir": ".",
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"skipLibCheck": true,
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"sourceMap": true,
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"strict": true,
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"stripInternal": true,
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"target": "ES2022",
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},
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"exclude": ["tsup.config.ts"]
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}

‎packages/sdk/shopify-oxygen/example/tsup.config.ts‎

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// It is a dev dependency and the linter doesn't understand.
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// @ts-ignore - tsup is a dev dependency installed at runtime
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// eslint-disable-next-line import/no-extraneous-dependencies
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import { defineConfig } from 'tsup';
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export default defineConfig({
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entry: {
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index: 'src/index.ts',
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},
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minify: true,
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format: ['esm'],
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splitting: false,
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clean: true,
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noExternal: ['@launchdarkly/shopify-oxygen-sdk'],
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dts: true,
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});

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