fn collect_block_locals(
source_map: &SourceMap,
block: &Block<'_>,
fallback_scope: Range<usize>,
out: &mut Vec<DebugVariable>,
)fn collect_block_locals(
source_map: &SourceMap,
block: &Block<'_>,
fallback_scope: Range<usize>,
out: &mut Vec<DebugVariable>,
)