Commits on Jul 26, 2024

1. refactor(syntax): give ScopeId a niche (#4468) …

   Make `ScopeId` a type with a niche, like `SymbolId` and `ReferenceId`. This makes `Option<ScopeId>` 4 bytes instead of 8, and shrinks various AST types e.g. `ArrowFunctionExpression` by 8 bytes, and halves the size of the `Vec` in `ScopeTree::parent_ids`.
   
   The snapshot change on `prefer-hooks-in-order` lint rule appears incidental - it doesn't alter what errors are reported, only the order they're reported in. This appears to be because it changes the order of keys in a hashmap keyed by `ScopeId` that [the rule uses](https://github.com/oxc-project/oxc/blob/a49f4915de38a57f9da4488b4d38b592ee15619f/crates/oxc_linter/src/rules/jest/prefer_hooks_in_order.rs#L143).

   

   overlookmotel committed Jul 26, 2024
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