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      /**
       * convert
       * for (var a in o) { body }
       * to
       * Object.values(o).forEach(function (a){ body })
       */
      case 'ForInStatement': {
        this.compileStatement({
          type: 'ExpressionStatement',
          expression: {
            type: 'CallExpression',
            callee: {
              type: 'MemberExpression',
              object: {
                type: 'CallExpression',
                callee: {
                  type: 'MemberExpression',
                  object: { type: 'Identifier', name: 'Object' },
                  property: { type: 'Identifier', name: 'values' },
                  computed: false,
                  optional: false,
                },
                arguments: [{ type: 'Identifier', name: (stat.right as Identifier).name }],
                optional: false,
              },
              property: { type: 'Identifier', name: 'forEach' },
              computed: false,
              optional: false,
            },
            arguments: [{
              type: 'FunctionExpression',
              id: null,
              params: [{ type: 'Identifier', name: ((stat.left as VariableDeclaration).declarations[0].id as any).name }],
              body: {
                type: 'BlockStatement',
                body: [stat.body]
              },
              label: this.createLabelName('for_in_func'),
              declarations: new Set(),
            }],
            optional: false,
          }
        })
        this.writeOp(OpCode.RET)
        this.compileBlock({
          type: 'FunctionExpression',
          id: null,
          params: [{ type: 'Identifier', name: ((stat.left as VariableDeclaration).declarations[0].id as any).name }],
          body: {
            type: 'BlockStatement',
            body: [stat.body]
          },
          label: this.createLabelName('for_in_func'),
          declarations: new Set(),
        })
        break;
      }