Jan Miksovsky 11/19/2025

Fixing the under-appreciated JavaScript Map class and using it to construct a build system

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This technical article discusses the underutilized JavaScript Map class, its advantages over plain objects, and its limitations. It demonstrates how to extend Map to create a FileMap class that interacts with the file system, and explores using this as a building block for constructing a custom build system, while comparing it to Python's Mapping abstract base class.

Fixing the under-appreciated JavaScript Map class and using it to construct a build system

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