Helius getPriorityFeeEstimate — account-aware percentile estimates. Helius
already returns micro-lamports-per-CU figures keyed by the same level names we
expose (priorityFeeLevels), so the mapping is direct. fetchImpl is
injectable for deterministic tests and defaults to the global fetch; the
API key, when provided, is appended to the request URL.
Helius
getPriorityFeeEstimate— account-aware percentile estimates. Helius already returns micro-lamports-per-CU figures keyed by the same level names we expose (priorityFeeLevels), so the mapping is direct.fetchImplis injectable for deterministic tests and defaults to the globalfetch; the API key, when provided, is appended to the request URL.