babel-check-duplicated-nodes

🐠 Babel helper module for transforms authors to check the AST against duplicated nodes.

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babel-check-duplicated-nodes

Duplicated AST nodes often lead to obscure bugs. This module checks your AST and throws a helpful error if you include a duplicated node in your output. It's useful when authoring babel transforms.

This piece of code was originally written by @nicolo-ribaudo and is included in babel's codebase.

API

checkDuplicatedNodes(babel, ast)