bun-src/test/bundler/transpiler/react-compiler-fixtures/reactive-control-dependency-switch-case-test.expect.md

Input

function Component(props) {
  let x;
  switch (props.cond) {
    case true: {
      x = 1;
      break;
    }
    case false: {
      x = 2;
      break;
    }
    default: {
      x = 3;
    }
  }
  // The values assigned to `x` are non-reactive, but the value of `x`
  // depends on the "control" value `props.cond` which is reactive.
  // Therefore x should be treated as reactive too.
  return [x];
}

export const FIXTURE_ENTRYPOINT = {
  fn: Component,
  params: [],
  sequentialRenders: [
    {cond: true},
    {cond: true},
    {cond: false},
    {cond: false},
    {cond: true},
    {cond: false},
    {cond: true},
    {cond: false},
  ],
};

Code

import { c as _c } from "react/compiler-runtime";
function Component(props) {
  const $ = _c(2);
  let x;
  bb0: switch (props.cond) {
    case true: {
      x = 1;
      break bb0;
    }
    case false: {
      x = 2;
      break bb0;
    }
    default: {
      x = 3;
    }
  }
  let t0;
  if ($[0] !== x) {
    t0 = [x];
    $[0] = x;
    $[1] = t0;
  } else {
    t0 = $[1];
  }
  return t0;
}

export const FIXTURE_ENTRYPOINT = {
  fn: Component,
  params: [],
  sequentialRenders: [
    { cond: true },
    { cond: true },
    { cond: false },
    { cond: false },
    { cond: true },
    { cond: false },
    { cond: true },
    { cond: false },
  ],
};

Eval output

(kind: ok) [1] [1] [2] [2] [1] [2] [1] [2]