feat: arrow functions support#957

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michaeldk wants to merge 22 commits intotwigjs:masterfrom

michaeldk:feature/arrow-functions

Commits on Mar 28, 2026

feat(arrow-functions): Add support for arrow operator and arrow function in Twig expressions
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feat(arrow-functions): Implement arrow function preprocessing in Twig expressions
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feat(arrow-functions): Add async evaluation for compiled arrow tokens in Twig expressions
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feat(arrow-functions): Implement filter function for arrays and objects using arrow predicates
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feat(arrow-functions): Add map filter for arrays and objects with arrow function support
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feat(reduce-filter): Implement reduce filter for arrays and objects with arrow function support
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feat(sort-filter): Enhance sort filter to support async arrow functions and preserve original array
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feat(find-filter): Add find filter to retrieve the first matching value in arrays and objects using arrow functions
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feat(arrow-functions): Add various edge cases tests
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test(filters): Add tests for scalar values in filter, map, reduce, and find functions
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test(filters): Add tests for reducing and sorting empty arrays and single-element arrays
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test(filters): Add tests for error handling in arrow functions with missing variables and async filters
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test(filters): Add tests for sorting arrays with duplicates and chaining async filters in arrow functions
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test(expressions): Add tests for arrow functions with invalid syntax
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test(filters): Update async filter tests
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test(filters): Refactor reduce filter test
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test(filters): Add tests for find filter with empty arrays and objects
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test(filters): Add test for sorting an array of objects by a numeric field using an arrow comparator
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test(filters): Add test for NaN output when reducing an array with no initial value
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test(filters): Add test for synchronous rendering with async filter returning Twig.Promise in arrow function
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test(filters): Add test for compiling arrow map in set expressions and joining bound variable
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refactor(arrow-functions): Better comments
michaeldk
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