(collection: any)
| 42 | } |
| 43 | |
| 44 | function createIndexUsageTracker(collection: any): { |
| 45 | stats: IndexUsageStats |
| 46 | restore: () => void |
| 47 | } { |
| 48 | const stats: IndexUsageStats = { |
| 49 | rangeQueryCalls: 0, |
| 50 | fullScanCalls: 0, |
| 51 | indexesUsed: [], |
| 52 | queriesExecuted: [], |
| 53 | } |
| 54 | |
| 55 | // Track rangeQuery calls on index objects (index usage) |
| 56 | const originalIndexes = new Map() |
| 57 | |
| 58 | // Mock the indexes getter to intercept index access |
| 59 | const originalIndexesGetter = Object.getOwnPropertyDescriptor( |
| 60 | Object.getPrototypeOf(collection), |
| 61 | `indexes`, |
| 62 | )?.get |
| 63 | Object.defineProperty(collection, `indexes`, { |
| 64 | get: function () { |
| 65 | const indexes = originalIndexesGetter?.call(collection) || new Map() |
| 66 | |
| 67 | // Mock each index's rangeQuery method |
| 68 | for (const [indexId, index] of indexes.entries()) { |
| 69 | if (!originalIndexes.has(indexId)) { |
| 70 | const originalLookup = index.lookup |
| 71 | originalIndexes.set(indexId, originalLookup) |
| 72 | |
| 73 | index.lookup = function (operation: string, value: any) { |
| 74 | stats.rangeQueryCalls++ |
| 75 | stats.indexesUsed.push(indexId) |
| 76 | stats.queriesExecuted.push({ |
| 77 | type: `index`, |
| 78 | operation, |
| 79 | field: index.expression?.path?.join(`.`), |
| 80 | value, |
| 81 | }) |
| 82 | return originalLookup.call(this, operation, value) |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | return indexes |
| 88 | }, |
| 89 | configurable: true, |
| 90 | }) |
| 91 | |
| 92 | // Track full scan calls (entries() iteration) |
| 93 | const originalEntries = collection.entries |
| 94 | collection.entries = function* () { |
| 95 | // Only count as full scan if we're in a filtering context |
| 96 | // Check the call stack to see if we're inside createFilterFunction |
| 97 | const stack = new Error().stack || `` |
| 98 | if ( |
| 99 | stack.includes(`createFilterFunction`) || |
| 100 | stack.includes(`currentStateAsChanges`) |
| 101 | ) { |
no test coverage detected