Fwd: withBreak blocks

[Jerry Schulteis]

No if / else if / else or nested if blocks:

```jsconst log = x => console.log(x);

// Simulated fallible fetchData
const fetchData = () => {
  const x = Math.random();
  if (x < 0.25) return {error: true, message: "fetchData error"};
  if (x < 0.50) return {};
  if (x < 0.75) return {data: {}};
  return {data: {todos: ["refactor your code"]}};
};

// Simulated action
const action = o => log(o.data);
    
const checkForError = response => {
  const isError = response.error;
  if (isError) {
    log(response.message);
  }
  return isError;
};

const checkForNoData = response => {
  const isNoData = !response.data;
  if (isNoData) {
    log("No data");
  }
  return isNoData;
};

const checkForNoTodos = response => {
  const isNoTodos = !response.data.todos;
  if (isNoTodos) {
    log("No Todos");
  }
  return isNoTodos;
};

const checkList = [
  checkForError,
  checkForNoData,
  checkForNoTodos
];

const doWork = () => {
  const response = fetchData();
  const checkFailed = checkList.find(check => check(response));
  if (!checkFailed) {
    return action({data: response.data});
  }
};
```
  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20180218/ab0b845f/attachment.html>