Component() — react Function Reference

Source Code

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/reactive-control-dependency-via-mutation-switch.js lines 1–18

function Component(props) {
  // x is mutated conditionally based on a reactive value,
  // so it needs to be considered reactive
  let x = [];
  if (props.cond) {
    x.push(1);
  }
  // Since x is reactive, y is now reactively controlled too:
  let y = false;
  switch (x[0]) {
    case 1: {
      y = true;
      break;
    }
  }
  // Thus this value should be reactive on `y`:
  return [y];
}