chore: strengthen backend eslint profile

src/modules/investments/instruments/domain/candle-coverage.spec.ts

@@ -67,7 +67,7 @@ describe('source-confirmed daily candle coverage', () => {
       expect(window.to.valueOf() - window.from.valueOf()).toBeLessThanOrEqual(
         365 * 86400000,
       );
-      if (index) expect(window.from).toEqual(windows[index - 1].to);
+      expect(window.from).toEqual(index ? windows[index - 1].to : range.from);
     });
   });
 });

src/modules/investments/instruments/domain/candle-coverage.ts

@@ -2,13 +2,13 @@ import { MILLISECONDS_PER_DAY } from '../../../../common/time';
 
 export type CandleRange = { from: Date; to: Date };
 export type CandleCoverage = CandleRange & {
-  isComplete: boolean;
   fetchedAt: Date;
+  isComplete: boolean;
 };
 export type SavedCandle = {
-  time: string;
   close: string;
   isComplete: boolean;
+  time: string;
 };
 const windowDays = 365;
 const tailFreshForMs = 60_000;
@@ -30,14 +30,15 @@ export function candleGaps(
       !covered.isComplete &&
       (now.valueOf() - covered.fetchedAt.valueOf() >= tailFreshForMs ||
         utcDay(now).valueOf() !== utcDay(covered.fetchedAt).valueOf())
-    )
+    ) {
       continue;
+    }
     gaps = gaps.flatMap((gap) => {
       if (covered.to <= gap.from || covered.from >= gap.to) return [gap];
       return [
-        ...(covered.from > gap.from
-          ? [{ from: gap.from, to: covered.from }]
-          : []),
+        ...(covered.from > gap.from ?
+            [{ from: gap.from, to: covered.from }] :
+            []),
         ...(covered.to < gap.to ? [{ from: covered.to, to: gap.to }] : []),
       ];
     });
@@ -73,11 +74,14 @@ export function confirmedCandleCoverage(
   for (const boundary of [
     midnight,
     ...[...incompleteDays].flatMap((day) => [day, day + MILLISECONDS_PER_DAY]),
-  ])
-    if (boundary > range.from.valueOf() && boundary < range.to.valueOf())
+  ]) {
+    if (boundary > range.from.valueOf() && boundary < range.to.valueOf()) {
       boundaries.add(boundary);
+    }
+  }
   const sorted = [...boundaries].sort((a, b) => a - b);
   return sorted.slice(1).map((to, index) => {
+    // eslint-disable-next-line security/detect-object-injection -- The index comes from the sorted numeric boundary array.
     const from = sorted[index];
     return {
       from: new Date(from),