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feat(semantic): introduce symbol_declarations method #19609

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graphite-app merged 1 commit into from
Feb 25, 2026
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feat(semantic): introduce symbol_declarations method #19609

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13 changes: 13 additions & 0 deletions crates/oxc_semantic/src/scoping.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -405,6 +405,19 @@ impl Scoping {
*self.symbol_table.symbol_declarations(symbol_id)
}

/// Get all declaration node IDs for a symbol.
///
/// Most symbols have a single declaration, but TypeScript allows merged type/value
/// declarations (e.g. `interface Foo {}` + `const Foo = ...`).
/// This iterator yields all declaration nodes in those cases.
#[inline]
pub fn symbol_declarations(&self, symbol_id: SymbolId) -> impl Iterator<Item = NodeId> + '_ {
let redeclarations = self.symbol_redeclarations(symbol_id);
std::iter::once(self.symbol_declaration(symbol_id))
.filter(move |_| redeclarations.is_empty())
.chain(redeclarations.iter().map(|redeclaration| redeclaration.declaration))
}

/// Create a new symbol and append symbol metadata to the symbol table.
pub fn create_symbol(
&mut self,
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