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refactor(transformer): VarDeclarations common transform: check if at top level with ctx.parent() (#6231)

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Micro-optimization. The stack of ancestors is now a `NonEmptyStack`, so `ctx.parent()` is now cheaper than `ctx.ancestors_depth()`.
This commit is contained in:
overlookmotel 2024-10-01 22:44:51 +00:00
parent a949ecb052
commit 0400ff9ea5
1 changed files with 3 additions and 4 deletions
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7
crates/oxc_transformer/src/common/var_declarations.rs
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@ -19,7 +19,7 @@ use oxc_ast::{ast::*, NONE};
use oxc_data_structures::stack::SparseStack;
use oxc_span::SPAN;
use oxc_syntax::symbol::SymbolId;
use oxc_traverse::{Traverse, TraverseCtx};
use oxc_traverse::{Ancestor, Traverse, TraverseCtx};
use crate::TransformCtx;
@ -59,9 +59,8 @@ impl<'a, 'ctx> Traverse<'a> for VarDeclarations<'a, 'ctx> {
}
fn exit_statements(&mut self, stmts: &mut Vec<'a, Statement<'a>>, ctx: &mut TraverseCtx<'a>) {
if ctx.ancestors_depth() == 2 {
// Top level. Handle in `exit_program` instead.
// (depth 1 = None, depth 2 = Program)
if matches!(ctx.parent(), Ancestor::ProgramBody(_)) {
// Handle in `exit_program` instead
return;
}