Dr. Axel Rauschmayer • 6/18/2025

How TypeScript solved its global <code>Iterator</code> name clash

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This technical article explains how TypeScript addressed the conflict between its existing Iterator type definitions and JavaScript's new global Iterator class introduced in ECMAScript 2025. It details TypeScript's solution of creating a new IteratorObject type for class instances while preserving the original Iterator type for backward compatibility with existing iteration protocol code.

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#TypeScript #type system #ecmascript
How TypeScript solved its global <code>Iterator</code> name clash

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