TypeScript: TypeError: Cannot read property 'type' of null

[lautarodragan]

I'm getting this error when running standard on a typescript project:

$ standard --parser typescript-eslint-parser --plugin typescript "src/**/*.ts"
standard: Unexpected linter output:

TypeError: Cannot read property 'type' of null
    at Referencer.visitFunction (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/escope/lib/referencer.js:258:26)
    at Referencer.FunctionExpression (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/escope/lib/referencer.js:569:18)
    at Referencer.Visitor.visit (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/esrecurse/esrecurse.js:122:34)
    at Referencer.Visitor.visitChildren (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/esrecurse/esrecurse.js:106:26)
    at Referencer.Visitor.visit (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/esrecurse/esrecurse.js:125:14)
    at Referencer.Visitor.visitChildren (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/esrecurse/esrecurse.js:101:38)
    at Referencer.Visitor.visit (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/esrecurse/esrecurse.js:125:14)
    at Referencer.Visitor.visitChildren (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/esrecurse/esrecurse.js:106:26)
    at Referencer.Visitor.visit (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/esrecurse/esrecurse.js:125:14)
    at Referencer.visitExportDeclaration (/home/lautaro/.nvm/versions/node/v8.1.0/lib/node_modules/standard/node_modules/escope/lib/referencer.js:603:22)

Versions of stuff I'm using:

$ node -v
v8.1.0
$ npm -v
5.0.3
$ tsc -v
Version 2.3.4

Followed the instructions on the README. Installed eslint-plugin-typescript and typescript-eslint-parser globally.

Also tried installing standard as a devDependency.

package.json looks like this:

  ...
  "scripts": {
    ...
    "standard": "standard 'src/**/*.ts'"
  },
  "devDependencies": {
    ...
    "eslint-plugin-typescript": "^0.3.0",
    "standard": "^10.0.2",
    "typescript-eslint-parser": "^4.0.0",
  }
  "standard": {
    "parser": "typescript-eslint-parser",
    "plugins": [
      "typescript"
    ]
  }

Tried running npm run standard to use the standard installed on the project instead of the global one, but came to the same result.

Also tried running against *.tsx files (it's a typescript + reactjs project), got the same result.

If I run it with no arguments, it matches against webpack.config.js and devServer.js only, and seems to be working well in that case (reported a bunch of style errors and offered to auto --fix them).

Am I doing anything wrong?

[rochapablo]

standard: Unexpected linter output:

TypeError: Cannot read property 'type' of null
    at EventEmitter.JSXOpeningElement (/.../node_modules/eslint-plugin-react/lib/rules/jsx-indent.js:230:32)
    at emitOne (events.js:101:20)
    at EventEmitter.emit (events.js:188:7)
    at NodeEventGenerator.applySelector (/.../node_modules/eslint/lib/util/node-event-generator.js:265:26)
    at NodeEventGenerator.applySelectors (/.../node_modules/eslint/lib/util/node-event-generator.js:294:22)
    at NodeEventGenerator.enterNode (/.../node_modules/eslint/lib/util/node-event-generator.js:308:14)
    at CodePathAnalyzer.enterNode (/.../node_modules/eslint/lib/code-path-analysis/code-path-analyzer.js:602:23)
    at CommentEventGenerator.enterNode (/.../node_modules/eslint/lib/util/comment-event-generator.js:98:23)
    at Traverser.enter (/.../node_modules/eslint/lib/eslint.js:929:36)
    at Traverser.__execute (/.../node_modules/estraverse/estraverse.js:397:31)

Running

$ standard --fix --parser typescript-eslint-parser --plugin typescript *.ts

"standard": "^10.0.3",
"typescript": "^2.5.3",
"typescript-eslint-parser": "^8.0.0"

"standard": {
    "global": [...],
    "ignore": [
      "/android",
      "/ios",
      "/node_modules"
    ],
    "rules": {
      "typescript/type-annotation-spacing": "error"
    },
    "parser": "typescript-eslint-parser",
    "plugins": [
      "typescript"
    ]
  },

[adyshimony]

Check this out
eslint/typescript-eslint-parser#439 (comment)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[feross]

The workaround for this issue is:

ESLint doesn’t support catch clauses without a parameter, as they’re not yet part of JavaScript. Using catch (_) or similar instead should fix the issue.

Mentioned in this comment: eslint/typescript-eslint-parser#439 (comment)