Function VariableDeclaration

lib/internal/repl/await.js:66–136

(node, state, c)

    walk.base.ReturnStatement(node, state, c);
  },
  VariableDeclaration(node, state, c) {
    const variableKind = node.kind;
    const isIterableForDeclaration = ArrayPrototypeIncludes(
      ['ForOfStatement', 'ForInStatement'],
      state.ancestors[state.ancestors.length - 2].type,
    );

    if (variableKind === 'var' || isTopLevelDeclaration(state)) {
      state.replace(
        node.start,
        node.start + variableKind.length + (isIterableForDeclaration ? 1 : 0),
        variableKind === 'var' && isIterableForDeclaration ?
          '' :
          'void' + (node.declarations.length === 1 ? '' : ' ('),
      );

      if (!isIterableForDeclaration) {
        ArrayPrototypeForEach(node.declarations, (decl) => {
          state.prepend(decl, '(');
          state.append(decl, decl.init ? ')' : '=undefined)');
        });

        if (node.declarations.length !== 1) {
          state.append(node.declarations[node.declarations.length - 1], ')');
        }
      }

      const variableIdentifiersToHoist = [
        ['var', []],
        ['let', []],
      ];
      function registerVariableDeclarationIdentifiers(node) {
        switch (node.type) {
          case 'Identifier':
            ArrayPrototypePush(
              variableIdentifiersToHoist[variableKind === 'var' ? 0 : 1][1],
              node.name,
            );
            break;
          case 'ObjectPattern':
            ArrayPrototypeForEach(node.properties, (property) => {
              registerVariableDeclarationIdentifiers(property.value || property.argument);
            });
            break;
          case 'ArrayPattern':
            ArrayPrototypeForEach(node.elements, (element) => {
              registerVariableDeclarationIdentifiers(element);
            });
            break;
        }
      }

      ArrayPrototypeForEach(node.declarations, (decl) => {
        registerVariableDeclarationIdentifiers(decl.id);
      });

      ArrayPrototypeForEach(
        variableIdentifiersToHoist,