const inside switch case statement is a syntax error

[dmnd]

Maybe a bug with ES 6 block bindings?

$ eslint -v
v0.14.1


$ eslint -c .eslintrc test.js 

test.js
  4:7  error  Unexpected token const

✖ 1 problem (1 error, 0 warnings)


$ cat test.js 
function fn(foo) {
  switch (foo) {
    case "foo":
      const bar = "bar";
      break;
  }
}


$ cat .eslintrc 
env:
  browser: true,
  node: true

ecmaFeatures:
  blockBindings: true

[nzakas]

This is a parser error, would you mind filing this at https://github.com/eslint/Espree/issues

[steelbrain]

@nzakas I am still getting this error, here's some minimal repro code

module.exports = function(a){
  a.somethin = function(){
    let c = ""
  }
}

[michaelficarra]

@steelbrain What? Your code doesn't include const or switch.

[steelbrain]

@michaelficarra it does include a let I was referred to this issue from #1834

[michaelficarra]

The original error was

Unexpected token const

Is that the error you see? The error was also triggered by interaction with switch. Do you have a switch?

[steelbrain]

The error I see is Unexpected token let, You can find out more using the repro example above.

[WA9ACE]

I just had this error as well.

[ilyavolodin]

@C0deMaver1ck Can you share your .eslintrc file please?

[WA9ACE]

The previous screenshot was without one. When I used this:

env:
  browser: true,
  node: true

ecmaFeatures:
  blockBindings: true

I got

src/main.js
  3:27  error  Unexpected token >

✖ 1 problem (1 error, 0 warnings)

[IanVS]

What version are you using? If you're on 1.0.0, there is likely an .eslintrc file somewhere up the directory structure, or possibly in your ~/. Without some kind of eslint configuration, ESLint will do nothing in version 1.0.0.

[mysticatea]

@C0deMaver1ck You are using arrow functions, so need arrowFunctions: true in ecmaFeatures section. Or...

env:
  browser: true
  node: true
  es6: true