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Codebase Compiler FAQ
Nathan Shively-Sanders edited this page Sep 2, 2022
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getElementTypeOfArrayType(t) === numberTypegetElementTypeOfArrayType returns undefined if t is not an array type.
Use isArrayType or isArrayLikeType if that's all you need to know.
Probably you return undefined instead of a new or existin node, but look at src/compiler/transformers/ts.ts.
Deleting type annotations is its main job.
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