Estruturas condicionais do JavaScript

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" summary

Outlines how JavaScript conditionals trade structure for expressiveness: switch case keeps the decision‑tree shape but lacks expressivity, if/else offers expressivity but not tree structure, and ternary is the only conditional that is also an expression. Presents the pattern‑matching proposal that introduces a new is operator and custom guards to fill those gaps, links directly to the proposal repo and spec draft, and shows the proposal as a language design direction rather than a shipped, widely supported feature.

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