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Large numbers are hard to read. 1000000000 and 100000000 look almost identical at a glance — one is a billion, the other is a hundred million, and the human eye can’t reliably tell them apart. Numeric separators fix this: an underscore you place wherever you want, that JavaScript ignores entirely. The feature is small. It…

Before ES2022, await only worked inside async functions. To use it at the module’s top level, you had to wrap everything in an async IIFE — a workaround that added noise to every file that needed to fetch config, load a database connection, or initialize resources before exporting anything. Top-level await changes that. In an…