[email protected] + [email protected] + decorators crash

[jsg2021]

See gist:
https://gist.github.com/jsg2021/e61f6d4de37423842fd5b504b77967c9

babel-eslint@8 fixes it, but brings in babel@7 beta...

[jsg2021]

[email protected] does not crash.

[wKich]

I have same issue, but with no-unused-vars rule

index.js

type A = number
const a: A = 1

.eslintrc.json

{
  "parser": "babel-eslint",
  "rules": {
    "no-unused-vars": "error"
  }
}

package.json

  "dependencies": {
    "babel-eslint": "^7.2.3",
    "eslint": "^4.15.0"
  }

Cannot read property 'type' of undefined
TypeError: Cannot read property 'type' of undefined
    at isForInRef (/project/node_modules/eslint/lib/rules/no-unused-vars.js:406:24)
    at variable.references.some.ref (/project/node_modules/eslint/lib/rules/no-unused-vars.js:443:21)
    at Array.some (<anonymous>)
    at isUsedVariable (/project/node_modules/eslint/lib/rules/no-unused-vars.js:442:40)
    at collectUnusedVariables (/project/node_modules/eslint/lib/rules/no-unused-vars.js:565:26)
    at collectUnusedVariables (/project/node_modules/eslint/lib/rules/no-unused-vars.js:572:17)
    at Program:exit (/project/node_modules/eslint/lib/rules/no-unused-vars.js:617:36)
    at listeners.(anonymous function).forEach.listener (/project/node_modules/eslint/lib/util/safe-emitter.js:47:58)
    at Array.forEach (<anonymous>)
    at Object.emit (/project/node_modules/eslint/lib/util/safe-emitter.js:47:38)

[jsg2021]

The latest eslint (4.18.2) still crashes with 7.2.3 in the same way. I'm trying to use 8.2.2, but it crashes too. See: #578 and #585

[jsg2021]

eslint 4.19.0 + babel-eslint 8.2.2 (and 7.2.3) work as expected for me.

_{Sent with GitHawk}

[JSteunou]

I have eslint 4.19.1 & babel-eslint 7.2.3 and the bug is still present. I had to deactivate no-unused-vars

[yyfearth]

Same issue here with [email protected] and [email protected]

[fragsalat]

Recognized the problem with [email protected] and [email protected].

import {singleton} from 'aurelia-dependency-injection';

@singleton()  // <---- Fails here
export class Timer {

  timers = {};

[dylanyg]

Recognized the problem with [email protected] and [email protected].

import {singleton} from 'aurelia-dependency-injection';

@singleton()  // <---- Fails here
export class Timer {

  timers = {};

hi, are you resolved the question