Tracks which <pgEnv>:<ssEnv> precedence pairs have already emitted a
console.warn. Both _resolveConnEnv (runs at module load) and
applyPlatformDependentEnvVars (runs after the user config merge,
plus again on every initializeConfig() call) can detect the same env-var
divergence and would otherwise warn 2–3 times for one config issue. The
set lives at module scope so it survives across both helpers' invocations
within the same process.
Exported solely so tests can reset the dedup state between cases — production
code never mutates this set directly.
Tracks which
<pgEnv>:<ssEnv>precedence pairs have already emitted aconsole.warn. Both _resolveConnEnv (runs at module load) and applyPlatformDependentEnvVars (runs after the user config merge, plus again on everyinitializeConfig()call) can detect the same env-var divergence and would otherwise warn 2–3 times for one config issue. The set lives at module scope so it survives across both helpers' invocations within the same process.Exported solely so tests can reset the dedup state between cases — production code never mutates this set directly.