babel/packages/babel-plugin-transform-template-literals/test/fixtures/default/order2/exec.js

const calls = [];

`
  ${{
    [Symbol.toPrimitive]() {
      calls.push(1);
      return "foo";
    }
  }}
  ${1 +
    {
      valueOf() {
        calls.push(2);
        return 2;
      }
    }}
`;

assert.deepEqual(calls, [1, 2]);