From fdbf5661f9a2cbb721425bf7c35ad6a2a3f210d3 Mon Sep 17 00:00:00 2001
From: Chris <chrisbreuer93@gmail.com>
Date: Sat, 23 Nov 2024 15:56:00 +0100
Subject: [PATCH] chore: wip

---
 src/collect.ts     |  19 --
 src/types.ts       |   5 -
 test/index.test.ts | 619 ++++++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 616 insertions(+), 27 deletions(-)

diff --git a/src/collect.ts b/src/collect.ts
index 533cd27..0964592 100644
--- a/src/collect.ts
+++ b/src/collect.ts
@@ -2149,25 +2149,6 @@ ${collection.items.map(item =>
       return this
     },
 
-    lint(): Array<{ type: 'warning' | 'error', message: string, suggestion?: string }> {
-      const issues: Array<{ type: 'warning' | 'error', message: string, suggestion?: string }> = []
-
-      // Check for null values
-      for (const item of this.items) {
-        for (const [key, value] of Object.entries(item as object)) {
-          if (value === null) {
-            issues.push({
-              type: 'warning',
-              message: `Null value found in field "${key}"`,
-              suggestion: 'Consider using undefined or providing a default value',
-            })
-          }
-        }
-      }
-
-      return issues
-    },
-
     sentiment(this: CollectionOperations<string>): CollectionOperations<{ score: number, comparative: number }> {
       // Basic sentiment analysis using a simple positive/negative word approach
       const positiveWords = new Set(['good', 'great', 'awesome', 'excellent', 'happy', 'love'])
diff --git a/src/types.ts b/src/types.ts
index af00091..38f0cc8 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -474,11 +474,6 @@ export interface CollectionOperations<T> extends Collection<T> {
     memory: Record<string, number>
     complexity: Record<string, string>
   }>
-  lint: () => Array<{
-    type: 'warning' | 'error'
-    message: string
-    suggestion?: string
-  }>
 
   // Advanced Mathematical Operations
   /**
diff --git a/test/index.test.ts b/test/index.test.ts
index 58bcb1b..ea4fde1 100644
--- a/test/index.test.ts
+++ b/test/index.test.ts
@@ -1,7 +1,620 @@
 import { describe, expect, it } from 'bun:test'
 
-describe('my awesome package', () => {
-  it('should work', () => {
-    expect(1).toBe(1)
+import { collect } from './collect'
+
+describe('Collection Core Operations', () => {
+  // Basic Collection Creation
+  describe('collect()', () => {
+    it('should create collection from array', () => expect(true).toBe(true))
+    it('should create collection from iterable', () => expect(true).toBe(true))
+    it('should handle empty input', () => expect(true).toBe(true))
+  })
+
+  // Transformation Operations
+  describe('map()', () => {
+    it('should transform items with index', () => expect(true).toBe(true))
+    it('should handle empty collection', () => expect(true).toBe(true))
+    it('should maintain types correctly', () => expect(true).toBe(true))
+  })
+
+  describe('filter()', () => {
+    it('should filter items with predicate', () => expect(true).toBe(true))
+    it('should pass index to predicate', () => expect(true).toBe(true))
+    it('should handle empty collection', () => expect(true).toBe(true))
+  })
+
+  describe('reduce()', () => {
+    it('should reduce collection with initial value', () => expect(true).toBe(true))
+    it('should pass index to callback', () => expect(true).toBe(true))
+    it('should handle empty collection', () => expect(true).toBe(true))
+  })
+
+  describe('flatMap()', () => {
+    it('should flatten and map results', () => expect(true).toBe(true))
+    it('should handle nested arrays', () => expect(true).toBe(true))
+    it('should pass index to callback', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Element Access', () => {
+  describe('first()', () => {
+    it('should return first element', () => expect(true).toBe(true))
+    it('should return undefined for empty collection', () => expect(true).toBe(true))
+    it('should return property when key provided', () => expect(true).toBe(true))
+  })
+
+  describe('last()', () => {
+    it('should return last element', () => expect(true).toBe(true))
+    it('should return undefined for empty collection', () => expect(true).toBe(true))
+    it('should return property when key provided', () => expect(true).toBe(true))
+  })
+
+  describe('nth()', () => {
+    it('should return element at index', () => expect(true).toBe(true))
+    it('should return undefined for out of bounds', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Aggregation Methods', () => {
+  describe('sum()', () => {
+    it('should sum numeric values', () => expect(true).toBe(true))
+    it('should sum by key', () => expect(true).toBe(true))
+    it('should handle empty collection', () => expect(true).toBe(true))
+  })
+
+  describe('avg()', () => {
+    it('should calculate average of numbers', () => expect(true).toBe(true))
+    it('should calculate average by key', () => expect(true).toBe(true))
+    it('should handle empty collection', () => expect(true).toBe(true))
+  })
+
+  describe('median()', () => {
+    it('should find median of odd length collection', () => expect(true).toBe(true))
+    it('should find median of even length collection', () => expect(true).toBe(true))
+    it('should find median by key', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Grouping Operations', () => {
+  describe('chunk()', () => {
+    it('should create chunks of specified size', () => expect(true).toBe(true))
+    it('should handle remainder chunk', () => expect(true).toBe(true))
+    it('should throw for invalid chunk size', () => expect(true).toBe(true))
+  })
+
+  describe('groupBy()', () => {
+    it('should group by key', () => expect(true).toBe(true))
+    it('should group by callback', () => expect(true).toBe(true))
+    it('should handle empty collection', () => expect(true).toBe(true))
+  })
+
+  describe('partition()', () => {
+    it('should split collection by predicate', () => expect(true).toBe(true))
+    it('should handle empty collection', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Filtering Methods', () => {
+  describe('where()', () => {
+    it('should filter by key-value pair', () => expect(true).toBe(true))
+    it('should handle non-existent key', () => expect(true).toBe(true))
+  })
+
+  describe('whereIn()', () => {
+    it('should filter by value list', () => expect(true).toBe(true))
+    it('should handle empty value list', () => expect(true).toBe(true))
+  })
+
+  describe('whereBetween()', () => {
+    it('should filter values within range', () => expect(true).toBe(true))
+    it('should include boundary values', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Sorting Methods', () => {
+  describe('sort()', () => {
+    it('should sort with compare function', () => expect(true).toBe(true))
+    it('should sort numbers by default', () => expect(true).toBe(true))
+    it('should handle empty collection', () => expect(true).toBe(true))
+  })
+
+  describe('sortBy()', () => {
+    it('should sort by key ascending', () => expect(true).toBe(true))
+    it('should sort by key descending', () => expect(true).toBe(true))
+    it('should handle non-existent key', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Set Operations', () => {
+  describe('unique()', () => {
+    it('should remove duplicates', () => expect(true).toBe(true))
+    it('should remove duplicates by key', () => expect(true).toBe(true))
+    it('should handle empty collection', () => expect(true).toBe(true))
+  })
+
+  describe('intersect()', () => {
+    it('should find common elements', () => expect(true).toBe(true))
+    it('should work with array input', () => expect(true).toBe(true))
+    it('should handle empty input', () => expect(true).toBe(true))
+  })
+
+  describe('union()', () => {
+    it('should combine unique elements', () => expect(true).toBe(true))
+    it('should work with array input', () => expect(true).toBe(true))
+    it('should handle empty input', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Utility Methods', () => {
+  describe('tap()', () => {
+    it('should execute callback and return collection', () => expect(true).toBe(true))
+    it('should not modify collection', () => expect(true).toBe(true))
+  })
+
+  describe('pipe()', () => {
+    it('should transform collection with callback', () => expect(true).toBe(true))
+    it('should handle complex transformations', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Async Operations', () => {
+  describe('mapAsync()', () => {
+    it('should transform items asynchronously', () => expect(true).toBe(true))
+    it('should maintain order', () => expect(true).toBe(true))
+    it('should handle rejections', () => expect(true).toBe(true))
+  })
+
+  describe('filterAsync()', () => {
+    it('should filter items asynchronously', () => expect(true).toBe(true))
+    it('should handle async predicates', () => expect(true).toBe(true))
+    it('should handle rejections', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Advanced Features', () => {
+  describe('timeSeries()', () => {
+    it('should create time series data', () => expect(true).toBe(true))
+    it('should fill gaps correctly', () => expect(true).toBe(true))
+    it('should handle different intervals', () => expect(true).toBe(true))
+  })
+
+  describe('movingAverage()', () => {
+    it('should calculate moving average', () => expect(true).toBe(true))
+    it('should handle different window sizes', () => expect(true).toBe(true))
+    it('should support centered option', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection ML Operations', () => {
+  describe('kmeans()', () => {
+    it('should cluster data points', () => expect(true).toBe(true))
+    it('should handle different distance metrics', () => expect(true).toBe(true))
+    it('should respect max iterations', () => expect(true).toBe(true))
+  })
+
+  describe('linearRegression()', () => {
+    it('should calculate regression coefficients', () => expect(true).toBe(true))
+    it('should calculate R-squared', () => expect(true).toBe(true))
+    it('should handle multiple independents', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Serialization', () => {
+  describe('toJSON()', () => {
+    it('should serialize to JSON string', () => expect(true).toBe(true))
+    it('should handle circular references', () => expect(true).toBe(true))
+    it('should respect serialization options', () => expect(true).toBe(true))
+  })
+
+  describe('toCsv()', () => {
+    it('should convert to CSV format', () => expect(true).toBe(true))
+    it('should handle nested objects', () => expect(true).toBe(true))
+    it('should escape special characters', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Performance Features', () => {
+  describe('cache()', () => {
+    it('should cache results', () => expect(true).toBe(true))
+    it('should respect TTL', () => expect(true).toBe(true))
+    it('should handle cache invalidation', () => expect(true).toBe(true))
+  })
+
+  describe('lazy()', () => {
+    it('should create lazy collection', () => expect(true).toBe(true))
+    it('should defer execution', () => expect(true).toBe(true))
+    it('should support chaining', () => expect(true).toBe(true))
+  })
+})
+
+// Previous test cases remain, adding all missing ones...
+
+describe('Advanced Transformations', () => {
+  describe('mapToGroups()', () => {
+    it('should map items to groups', () => expect(true).toBe(true))
+    it('should handle complex group mappings', () => expect(true).toBe(true))
+  })
+
+  describe('mapSpread()', () => {
+    it('should spread arguments to callback', () => expect(true).toBe(true))
+    it('should handle arrays and objects', () => expect(true).toBe(true))
+  })
+
+  describe('mapUntil()', () => {
+    it('should map until predicate is true', () => expect(true).toBe(true))
+    it('should handle early termination', () => expect(true).toBe(true))
+  })
+
+  describe('mapOption()', () => {
+    it('should filter out null/undefined values', () => expect(true).toBe(true))
+    it('should transform remaining values', () => expect(true).toBe(true))
+  })
+})
+
+describe('String Operations', () => {
+  describe('join()', () => {
+    it('should join string collections', () => expect(true).toBe(true))
+    it('should use custom separator', () => expect(true).toBe(true))
+  })
+
+  describe('implode()', () => {
+    it('should join by key', () => expect(true).toBe(true))
+    it('should use custom separator', () => expect(true).toBe(true))
+  })
+
+  describe('lower()', () => {
+    it('should convert to lowercase', () => expect(true).toBe(true))
+  })
+
+  describe('upper()', () => {
+    it('should convert to uppercase', () => expect(true).toBe(true))
+  })
+
+  describe('slug()', () => {
+    it('should create URL-friendly slug', () => expect(true).toBe(true))
+    it('should handle special characters', () => expect(true).toBe(true))
+  })
+})
+
+describe('Set Operations', () => {
+  describe('symmetricDiff()', () => {
+    it('should find symmetric difference', () => expect(true).toBe(true))
+    it('should work with collections and arrays', () => expect(true).toBe(true))
+  })
+
+  describe('cartesianProduct()', () => {
+    it('should compute cartesian product', () => expect(true).toBe(true))
+    it('should handle empty collections', () => expect(true).toBe(true))
+  })
+
+  describe('power()', () => {
+    it('should compute power set', () => expect(true).toBe(true))
+    it('should include empty set', () => expect(true).toBe(true))
+  })
+})
+
+describe('Advanced Math Operations', () => {
+  describe('zscore()', () => {
+    it('should calculate z-scores', () => expect(true).toBe(true))
+    it('should handle key parameter', () => expect(true).toBe(true))
+  })
+
+  describe('kurtosis()', () => {
+    it('should calculate kurtosis', () => expect(true).toBe(true))
+    it('should handle key parameter', () => expect(true).toBe(true))
+  })
+
+  describe('skewness()', () => {
+    it('should calculate skewness', () => expect(true).toBe(true))
+    it('should handle key parameter', () => expect(true).toBe(true))
+  })
+
+  describe('covariance()', () => {
+    it('should calculate covariance', () => expect(true).toBe(true))
+    it('should handle different keys', () => expect(true).toBe(true))
+  })
+
+  describe('entropy()', () => {
+    it('should calculate entropy', () => expect(true).toBe(true))
+    it('should handle key parameter', () => expect(true).toBe(true))
+  })
+
+  describe('fft()', () => {
+    it('should compute FFT for number collections', () => expect(true).toBe(true))
+    it('should throw for non-number collections', () => expect(true).toBe(true))
+  })
+
+  describe('interpolate()', () => {
+    it('should interpolate values', () => expect(true).toBe(true))
+    it('should handle different point counts', () => expect(true).toBe(true))
+  })
+
+  describe('convolve()', () => {
+    it('should convolve with kernel', () => expect(true).toBe(true))
+    it('should handle different kernel sizes', () => expect(true).toBe(true))
+  })
+
+  describe('differentiate()', () => {
+    it('should compute derivative', () => expect(true).toBe(true))
+    it('should handle numeric collections', () => expect(true).toBe(true))
+  })
+
+  describe('integrate()', () => {
+    it('should compute integral', () => expect(true).toBe(true))
+    it('should handle numeric collections', () => expect(true).toBe(true))
+  })
+})
+
+describe('Text Analysis', () => {
+  describe('sentiment()', () => {
+    it('should analyze sentiment', () => expect(true).toBe(true))
+    it('should calculate comparative score', () => expect(true).toBe(true))
+  })
+
+  describe('wordFrequency()', () => {
+    it('should count word occurrences', () => expect(true).toBe(true))
+    it('should handle case sensitivity', () => expect(true).toBe(true))
+  })
+
+  describe('ngrams()', () => {
+    it('should generate n-grams', () => expect(true).toBe(true))
+    it('should handle different n values', () => expect(true).toBe(true))
+  })
+})
+
+describe('Data Quality Operations', () => {
+  describe('detectAnomalies()', () => {
+    it('should detect using z-score method', () => expect(true).toBe(true))
+    it('should detect using IQR method', () => expect(true).toBe(true))
+    it('should detect using isolation forest', () => expect(true).toBe(true))
+  })
+
+  describe('impute()', () => {
+    it('should impute using mean', () => expect(true).toBe(true))
+    it('should impute using median', () => expect(true).toBe(true))
+    it('should impute using mode', () => expect(true).toBe(true))
+  })
+
+  describe('normalize()', () => {
+    it('should normalize using min-max', () => expect(true).toBe(true))
+    it('should normalize using z-score', () => expect(true).toBe(true))
+  })
+
+  describe('removeOutliers()', () => {
+    it('should remove statistical outliers', () => expect(true).toBe(true))
+    it('should handle custom threshold', () => expect(true).toBe(true))
+  })
+})
+
+describe('Type Operations', () => {
+  describe('as()', () => {
+    it('should cast to new type', () => expect(true).toBe(true))
+    it('should handle type constraints', () => expect(true).toBe(true))
+  })
+
+  describe('pick()', () => {
+    it('should pick specified keys', () => expect(true).toBe(true))
+    it('should handle missing keys', () => expect(true).toBe(true))
+  })
+
+  describe('omit()', () => {
+    it('should omit specified keys', () => expect(true).toBe(true))
+    it('should handle missing keys', () => expect(true).toBe(true))
+  })
+
+  describe('transform()', () => {
+    it('should transform using schema', () => expect(true).toBe(true))
+    it('should handle complex transformations', () => expect(true).toBe(true))
+  })
+})
+
+describe('Specialized Data Types', () => {
+  describe('geoDistance()', () => {
+    it('should calculate distances in km', () => expect(true).toBe(true))
+    it('should calculate distances in miles', () => expect(true).toBe(true))
+  })
+
+  describe('money()', () => {
+    it('should format as currency', () => expect(true).toBe(true))
+    it('should handle different currencies', () => expect(true).toBe(true))
+  })
+
+  describe('dateTime()', () => {
+    it('should format dates', () => expect(true).toBe(true))
+    it('should handle different locales', () => expect(true).toBe(true))
+  })
+})
+
+describe('Database-like Operations', () => {
+  describe('query()', () => {
+    it('should handle SQL-like queries', () => expect(true).toBe(true))
+    it('should support parameterized queries', () => expect(true).toBe(true))
+  })
+
+  describe('having()', () => {
+    it('should filter grouped results', () => expect(true).toBe(true))
+    it('should support different operators', () => expect(true).toBe(true))
+  })
+
+  describe('crossJoin()', () => {
+    it('should perform cross join', () => expect(true).toBe(true))
+    it('should handle empty collections', () => expect(true).toBe(true))
+  })
+
+  describe('leftJoin()', () => {
+    it('should perform left join', () => expect(true).toBe(true))
+    it('should handle missing matches', () => expect(true).toBe(true))
+  })
+})
+
+describe('Export Operations', () => {
+  describe('toSQL()', () => {
+    it('should generate SQL insert statement', () => expect(true).toBe(true))
+    it('should handle complex data types', () => expect(true).toBe(true))
+  })
+
+  describe('toGraphQL()', () => {
+    it('should generate GraphQL query', () => expect(true).toBe(true))
+    it('should handle nested structures', () => expect(true).toBe(true))
+  })
+
+  describe('toElastic()', () => {
+    it('should format for Elasticsearch', () => expect(true).toBe(true))
+    it('should handle bulk operations', () => expect(true).toBe(true))
+  })
+
+  describe('toPandas()', () => {
+    it('should generate pandas DataFrame code', () => expect(true).toBe(true))
+    it('should handle complex data structures', () => expect(true).toBe(true))
+  })
+})
+
+describe('Streaming Operations', () => {
+  describe('stream()', () => {
+    it('should create readable stream', () => expect(true).toBe(true))
+    it('should handle backpressure', () => expect(true).toBe(true))
+  })
+
+  describe('fromStream()', () => {
+    it('should collect from stream', () => expect(true).toBe(true))
+    it('should handle stream errors', () => expect(true).toBe(true))
+  })
+
+  describe('batch()', () => {
+    it('should process in batches', () => expect(true).toBe(true))
+    it('should handle custom batch sizes', () => expect(true).toBe(true))
+  })
+})
+
+describe('Performance Monitoring', () => {
+  describe('metrics()', () => {
+    it('should collect performance metrics', () => expect(true).toBe(true))
+    it('should track memory usage', () => expect(true).toBe(true))
+  })
+
+  describe('profile()', () => {
+    it('should measure execution time', () => expect(true).toBe(true))
+    it('should measure memory usage', () => expect(true).toBe(true))
+  })
+
+  describe('instrument()', () => {
+    it('should track operation counts', () => expect(true).toBe(true))
+    it('should provide performance stats', () => expect(true).toBe(true))
+  })
+})
+
+describe('Development Tools', () => {
+  describe('playground()', () => {
+    it('should initialize playground', () => expect(true).toBe(true))
+  })
+
+  describe('explain()', () => {
+    it('should explain operation pipeline', () => expect(true).toBe(true))
+  })
+
+  describe('benchmark()', () => {
+    it('should benchmark operations', () => expect(true).toBe(true))
+    it('should calculate complexity', () => expect(true).toBe(true))
+  })
+})
+
+describe('Version Control', () => {
+  describe('diff()', () => {
+    it('should compare versions', () => expect(true).toBe(true))
+    it('should detect changes', () => expect(true).toBe(true))
+  })
+
+  describe('diffSummary()', () => {
+    it('should summarize changes', () => expect(true).toBe(true))
+    it('should count modifications', () => expect(true).toBe(true))
+  })
+})
+
+describe('Parallel Processing', () => {
+  describe('parallel()', () => {
+    it('should process in parallel', () => expect(true).toBe(true))
+    it('should respect concurrency limits', () => expect(true).toBe(true))
+  })
+
+  describe('prefetch()', () => {
+    it('should prefetch results', () => expect(true).toBe(true))
+    it('should cache prefetched data', () => expect(true).toBe(true))
+  })
+})
+
+describe('Cache and Memoization', () => {
+  describe('cacheStore', () => {
+    it('should store cache entries', () => expect(true).toBe(true))
+    it('should respect cache entry expiry', () => expect(true).toBe(true))
+  })
+})
+
+describe('Conditional Operations', () => {
+  describe('when()', () => {
+    it('should execute when condition is true', () => expect(true).toBe(true))
+    it('should skip when condition is false', () => expect(true).toBe(true))
+  })
+
+  describe('unless()', () => {
+    it('should execute when condition is false', () => expect(true).toBe(true))
+    it('should skip when condition is true', () => expect(true).toBe(true))
+  })
+})
+
+describe('Navigation and Paging', () => {
+  describe('forPage()', () => {
+    it('should return specific page', () => expect(true).toBe(true))
+    it('should handle out of bounds pages', () => expect(true).toBe(true))
+  })
+
+  describe('cursor()', () => {
+    it('should create async iterator', () => expect(true).toBe(true))
+    it('should respect chunk size', () => expect(true).toBe(true))
+  })
+})
+
+describe('Fuzzy Matching', () => {
+  describe('calculateFuzzyScore()', () => {
+    it('should calculate similarity score', () => expect(true).toBe(true))
+    it('should handle empty strings', () => expect(true).toBe(true))
+  })
+
+  describe('levenshteinDistance()', () => {
+    it('should calculate edit distance', () => expect(true).toBe(true))
+    it('should handle empty strings', () => expect(true).toBe(true))
+  })
+})
+
+describe('Machine Learning Utilities', () => {
+  describe('randomSplit()', () => {
+    it('should split data for isolation forest', () => expect(true).toBe(true))
+    it('should respect max depth', () => expect(true).toBe(true))
+  })
+
+  describe('distance()', () => {
+    it('should calculate distance for KNN', () => expect(true).toBe(true))
+    it('should handle different feature sets', () => expect(true).toBe(true))
+  })
+})
+
+describe('Type Handling', () => {
+  describe('KeyType', () => {
+    it('should enforce matching key types', () => expect(true).toBe(true))
+    it('should handle type constraints', () => expect(true).toBe(true))
+  })
+})
+
+describe('Geographic Calculations', () => {
+  describe('haversine()', () => {
+    it('should calculate great circle distance', () => expect(true).toBe(true))
+    it('should handle different units', () => expect(true).toBe(true))
+  })
+})
+
+describe('Collection Core', () => {
+  describe('createCollectionOperations()', () => {
+    it('should create new collection operations', () => expect(true).toBe(true))
+    it('should initialize with correct state', () => expect(true).toBe(true))
+    it('should maintain type safety', () => expect(true).toBe(true))
   })
 })