refactor(rename): this value name now typed

Author: mu-hun

src/main/optimization.ts

@@ -60,7 +60,7 @@ let localConfigPath: string | null = null;
  * Populated lazily on the first `getOptimizableFilterIds` call.
  * Shared across concurrent callers to avoid redundant percent.json fetches.
  */
-let optimizableFilterIdsPromise: Set<number> | null = null;
+let optimizableFilterIds: Set<number> | null = null;
 
 /**
  * Returns the set of optimizable filter IDs.
@@ -72,13 +72,13 @@ let optimizableFilterIdsPromise: Set<number> | null = null;
  * @returns Set of filter IDs that have optimization stats available.
  */
 const getOptimizableFilterIds = async () => {
-    if (optimizableFilterIdsPromise === null) {
+    if (optimizableFilterIds === null) {
         const raw = localConfigPath !== null
             ? await fs.readFile(path.join(localConfigPath, PERCENT_JSON), 'utf-8')
             : await downloadOptimizationPercent();
-        optimizableFilterIdsPromise = new Set((JSON.parse(raw) as PercentJson).config.map(({ filterId: id }) => id));
+        optimizableFilterIds = new Set((JSON.parse(raw) as PercentJson).config.map(({ filterId: id }) => id));
     }
-    return optimizableFilterIdsPromise;
+    return optimizableFilterIds;
 };
 
 /**
@@ -195,9 +195,9 @@ export const getFilterOptimizationConfig = async (filterId: number) => {
         return null;
     }
 
-    const optimizableFilterIds = await getOptimizableFilterIds();
+    const ids = await getOptimizableFilterIds();
 
-    if (!optimizableFilterIds.has(filterId)) {
+    if (!ids.has(filterId)) {
         return null;
     }