Function ExportDefaultDeclaration

tools/acorn-optimizer.mjs:363–367

(node, c)

        ensureData(scopes[scopes.length - 1], name).use = 1;
      },
      ExportDefaultDeclaration(node, c) {
        const name = node.declaration.id.name;
        ensureData(scopes[scopes.length - 1], name).use = 1;
        c(node.declaration);
      },
      ExportNamedDeclaration(node, c) {
        if (node.declaration) {
          if (node.declaration.type == 'FunctionDeclaration') {