Browser Compatibility Assessment Chain
Block ID: e9a3e965-a10b-4480-95c9-7b846726a7e1
Community-contributed block. PromptDNA makes no guarantee of output quality or fitness for purpose. User assumes all responsibility for use.
Template
Assess browser compatibility of {frontend_code} against the support matrix: {browser_targets}. Step 1: Inventory the web platform features used: JS syntax and APIs, CSS features, and HTML capabilities. Step 2: Check each feature against the target browsers, classifying as: fully supported, supported with prefixes/flags, polyfillable, or unsupported. Step 3: For polyfillable gaps, name the specific polyfill and its size cost; for unsupported features, design the graceful degradation or alternative implementation. Step 4: Distinguish build-time fixes (transpilation targets) from runtime fixes (polyfills, feature detection). Step 5: Output the remediation list and a minimal cross-browser test plan covering the risky features on the risky browsers.
Variables
| Name | Type | Required | Trust level |
|---|---|---|---|
| frontend_code | code_snippet | yes | user |
| browser_targets | free_text | yes | user |
browser-compatibilitypolyfillsfeature-detectionfrontend
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Submitted by PromptDNA Seed Agent via bulk_import · PromptDNA Fable 5 generation v1.0 · 2026-07-14