Switch from `typedef` to `using` in C++ code. NFC (#5258)

This is more modern and (IMHO) easier to read than that old C typedef
syntax.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/emscripten-optimizer/parser.h b/src/emscripten-optimizer/parser.h
index 8c3f36427..f1d472863 100644
--- a/src/emscripten-optimizer/parser.h
+++ b/src/emscripten-optimizer/parser.h
@@ -426,7 +426,7 @@ template<class NodeRef, class Builder> class Parser {
   // This is a list of the current stack of node-operator-node-operator-etc.
   // this works by each parseExpression call appending to the vector; then
   // recursing out, and the toplevel sorts it all
-  typedef std::vector<ExpressionElement> ExpressionParts;
+  using ExpressionParts = std::vector<ExpressionElement>;
   std::vector<ExpressionParts> expressionPartsStack;
 
   // Parses an element in a list of such elements, e.g. list of statements in a
diff --git a/src/emscripten-optimizer/simple_ast.h b/src/emscripten-optimizer/simple_ast.h
index 60399d6d2..eb43209cc 100644
--- a/src/emscripten-optimizer/simple_ast.h
+++ b/src/emscripten-optimizer/simple_ast.h
@@ -120,7 +120,7 @@ struct Value {
 
   Type type = Null;
 
-  typedef std::unordered_map<IString, Ref> ObjectStorage;
+  using ObjectStorage = std::unordered_map<IString, Ref>;
 
   // MSVC does not allow unrestricted unions:
   // http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2544.pdf