An error has occurred during parsing: An unexpected token was found, a comma was expected instead

I encountered an error while running my program (vue3 + element plus), and I'm unsure about the cause. Can someone please assist me?

Below is the error description along with an image:

56:23 error Parsing error: Unexpected token, expected "," (11:23)

https://i.sstatic.net/eKN03.png

enter link description here

package.json

{
  "name": "vueui",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint"
  },
  "dependencies": {
    "core-js": "^3.8.3",
    "element-plus": "^2.1.3",
    "vue": "^3.2.13"
  },
  "devDependencies": {
    "@babel/core": "^7.12.16",
    "@babel/eslint-parser": "^7.17.0",
    "@vue/cli-plugin-babel": "~5.0.0",
    "@vue/cli-plugin-eslint": "~5.0.0",
    "@vue/cli-service": "~5.0.0",
    "eslint": "^7.32.0",
    "eslint-plugin-vue": "^8.0.3"
  },
  "eslintConfig": {
    "root": true,
    "env": {
      "node": true
    },
    "extends": [
      "plugin:vue/essential",
      "eslint:recommended"
    ],
    "parserOptions": {
      "parser": "@babel/eslint-parser"
    },
    "rules": {}
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not dead",
    "not ie 11"
  ]
}
javascripttypescriptvuejs3element

Answer №1

If you're currently using eslint with TypeScript, you may encounter some challenges. However, there are steps you can take to enable TypeScript support.

  • Start by running 
    npm install --save-dev @vue/eslint-config-typescript
  • Adjust the ESLint configuration as follows:
    • Remove 
      "parser": "@babel/eslint-parser"
      from the parserOptions section
    • Add 
      "@vue/typescript/recommended"
      to the extends key

Based on the structure of your current file, the updated configuration should look like this:

{
  "root": true,
  "env": {
    "node": true
  },
  "extends": [
    "plugin:vue/essential",
    "eslint:recommended",
    "@vue/typescript/recommended"
  ],
  "parserOptions": {},
  "rules": {}
}

Depending on the version of ESLint you have installed, adding @vue/eslint-config-typescript might lead to a dependency conflict. If you have ESLint < 9, consider installing @vue/eslint-config-typescript@10

Answer №2

When your code is functioning properly, it's important to set up esLint correctly. However, if you encounter an error, be sure to place the code within curly braces {} in order to fix the issue.

Answer №3

The source of my problem stemmed from the use of the find method. The error message provided by Vue was not very informative.

 <p v-if="clients" class="text-sm text-gray-400">
     There are no open or available details for 
    {{ clients.find((c: IClient) => c.id === selectedValue)[0]}}
 </p>

I misunderstood that find would return an IClient object, not an array.

Solution: Take a careful look at your code

 <p v-if="clients" class="text-sm text-gray-400">
         There are no open or available details for 
        {{ clients.find((c: IClient) => c.id === selectedValue)?.company }}
     </p>

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