$ show spatie/laravel-collection-macros
This repository is a Laravel package (library) that extends the native Illuminate\Support\Collection with over 50 additional macros, such as `chunkBy`, `transpose`, `validate`, `weightedRandom`, and a `try`/`catch` proxy. It is built and maintained by Spatie and is one of the most popular collection macro libraries in the Laravel ecosystem. The architecture is straightforward: a service provider (`CollectionMacroServiceProvider`) registers each macro as a closure on the Collection class at boot time. Each macro is defined as a separate invokable class in the `src/Macros/` directory, making the codebase modular and easy to test. There is no persistent state, database, or external service integration; the package operates purely in-memory on Collection objects. The primary entry point is the service provider auto-discovered by Laravel's package discovery. External dependencies are minimal (`illuminate/support` for the base Collection class, and optionally `amphp/parallel-functions` for the `parallelMap` macro). The code exhibits high craftsmanship: macros are concise, well-documented with docblocks, and each has dedicated Pest tests. Notable patterns include the `CatchableCollectionProxy` helper, which implements a fluent try/catch mechanism on collections using reflection for exception type matching, and the `WeightedRandom` macro with a clean weighted selection algorithm. The codebase is actively maintained, supporting Laravel 12 and 13 with PHP 8.2-8.5, and shows no signs of technical drift. It is not an application or service; it is a reusable library that can be dropped into any Laravel project to enrich collection operations.
The LLM identified 4 files worth highlighting for reuse:
Implements a fluent try/catch proxy for collections. Methods called on the proxy are recorded and executed inside the `catch()` method, which catches exceptions matching the type-hinted handler. The proxy returns the original collection on exception unless the handler returns a new collection. Uses reflection to determine the exception type from the handler's type hint. This is a non-trivial, reusable pattern that could be extracted to add transactional-style error handling to any chain of operations.
Provides a `weightedRandom` macro that selects a random item from the collection based on a weight attribute (string or callable). It builds a cumulative range, generates a random number, and picks the first item whose cumulative range exceeds that number. Items with zero weight are excluded; if all weights are zero, it falls back to standard `random()`. The implementation is clean, handles edge cases (negative weights, empty collection), and is easily reusable in any project requiring weighted random selection.
Implements a `transpose` macro that rotates a two-dimensional collection (rows become columns and vice versa). It validates that all rows have equal length, throws a `LengthException` otherwise. Uses `array_map` with splat operator to transpose, converting each resulting column into a new Collection. Handles empty collections, single rows, and Arrayable items. The pattern is self-contained and demonstrates a robust approach to matrix transposition with input validation.
Provides a `recursive` macro that converts nested arrays and objects into Collections recursively, with an optional maximum depth parameter to prevent infinite recursion. It uses a depth counter and recursion limit, mapping each value to a new Collection if it is an array or object (and depth allows). This is a clean, configurable solution for transforming deeply nested data structures into Collections, reusable in any context requiring recursive collection conversion.