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Updated API Breaking Changes (markdown)

Daniel Rosenwasser
2022-09-22 02:52:25 -07:00
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API-Breaking-Changes.md

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# TypeScript 4.9
As part of an optimization on substitution types, `SubstitutionType` objects no longer contain the `substitute` property representing the effective substitution (usually an intersection of the base type and the implicit constraint) - instead, they just contain the `constraint` property.
For more details, [read more on the original pull request](https://github.com/microsoft/TypeScript/pull/50397).
# TypeScript 4.8
## Decorators are placed on `modifiers` on TypeScript's Syntax Trees