feat (object/omit-deep): add 'omitDeep' function to omit fields deeply

[kevaldonga]

Summary

• Add omitDeep function that removes deeply nested object fields using dot-separated paths (e.g. 'user.profile.email')
• Supports top-level keys, nested objects, and field omission across array items
• Strong TypeScript inference via Paths<T> for valid paths and OmitDeep<T, P> for the return type
• 17 test cases including nested objects, arrays, entire field omission, primitives, and type checks
• Docs in all 4 languages (en, ko, ja, zh_hans)

Test Plan

• Top-level property omission
• Nested path omission ('b.x', 'user.profile.email')
• Multiple paths at once
• Entire nested object omitted ('user.profile', 'b')
• Property omitted from objects inside arrays ('users.secret')
• Entire array field omitted ('users')
• Nested arrays ('items.y')
• Empty paths, all keys omitted, original object not mutated
• Empty objects/arrays and non-existent nested paths (runtime no-op, type error)
• Primitives (null, undefined, numbers, strings, booleans) unchanged
• Type tests with expectTypeOf().toExtend()
• yarn vitest run src/object/omitDeep --typecheck passes (17 tests, no type errors)

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Project	Deployment	Actions	Updated (UTC)
es-toolkit	Ready	Preview, Comment	Jul 5, 2026 10:23am