fix: setting OpenFeature Provider sdkPlatform, update tests, mark getOpenFeatureProvider() as deprecated

[jonathannorris]

Fix OpenFeature Provider SDK Platform and Test Issues

Problem

• SDK platform not properly identified for OpenFeature integration
• Deprecated getOpenFeatureProvider() method lacked clear guidance
• OpenFeature provider tests failing due to improper client instantiation and mock bleeding

Changes

• Platform: Set sdkPlatform to 'nodejs-of' for proper tracking
• Deprecation: Added warnings to getOpenFeatureProvider() methods with migration docs
• Tests: Fixed client type instantiation and added proper mock cleanup with afterEach

Migration

// Before (deprecated)
const client = new DevCycleClient(sdkKey, options)
const provider = await client.getOpenFeatureProvider()

// After
const provider = new DevCycleProvider(sdkKey, options)
// For cloud: new DevCycleProvider(sdkKey, { ...options, enableCloudBucketing: true })

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
js-sdks-web-elements	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 16, 2025 8:24pm
js-sdks-with-provider	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 16, 2025 8:24pm

1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
js-sdks-next-js-page-router	⬜️ Ignored (Inspect)			Jul 16, 2025 8:24pm

[Copilot]

Pull Request Overview

This PR fixes OpenFeature provider integration by properly setting the SDK platform identifier, addressing test instability, and deprecating legacy provider access methods. The changes improve tracking capabilities and guide users toward the recommended DevCycleProvider pattern.

• Set sdkPlatform to 'nodejs-of' for proper OpenFeature integration tracking
• Added deprecation warnings to getOpenFeatureProvider() methods with migration documentation
• Fixed test suite by switching to direct DevCycleProvider instantiation and adding proper cleanup

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
sdk/nodejs/src/open-feature/DevCycleProvider.ts	Sets sdkPlatform to 'nodejs-of' when initializing from SDK key
sdk/nodejs/src/index.ts	Adds deprecation warning to getOpenFeatureProvider() method
sdk/nodejs/src/client.ts	Adds deprecation warning to getOpenFeatureProvider() method
sdk/nodejs/__tests__/open-feature-provider/DevCycleProvider.test.ts	Updates tests to use DevCycleProvider directly and adds proper mock cleanup