vue-cli-service build: compiled code throw error "SyntaxError: 30" on execute

Question

I've a vue application with js/ts mix.

After running command vue-cli-service build the compiled (prod-)code in browser (Chrome) returns multiple errors with rare messages by runtime-core.esm-bundler.js:226:

SyntaxError: 30 (at compiler-core.esm-bundler.js:12:17)
    at bl (compiler-core.esm-bundler.js:12:17)
    at Nd (compiler-core.esm-bundler.js:3404:11)
    at Array.<anonymous> (compiler-core.esm-bundler.js:3603:44)
    at H_ (compiler-core.esm-bundler.js:2014:13)
    at F_ (compiler-core.esm-bundler.js:1966:5)
    at H_ (compiler-core.esm-bundler.js:2008:7)
    at F_ (compiler-core.esm-bundler.js:1966:5)
    at H_ (compiler-core.esm-bundler.js:2008:7)
    at z_ (compiler-core.esm-bundler.js:1900:3)
    at uh (compiler-core.esm-bundler.js:4678:3)
...

All requests are working, but the page keeps blank.

At the develop environment anything works without errors.

Here the package.json:

// package.json
{
  "name": "vue-running-with-webpack",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint",
    "docs": "jsdoc -d docs -c -r src --verbose",
    "test:unit": "vue-cli-service test:unit test/unit/**/*.spec.js"
  },
  "devDependencies": {
    "@babel/core": "^7.12.16",
    "@babel/eslint-parser": "^7.12.16",
    "@typescript-eslint/parser": "^6.10.0",
    "@ui5/webcomponents": "^1.17.0",
    "@ui5/webcomponents-fiori": "^1.19.0",
    "@ui5/webcomponents-icons": "^1.19.0",
    "@ui5/webcomponents-icons-business-suite": "^1.17.2",
    "@vue/cli-plugin-babel": "~5.0.0",
    "@vue/cli-plugin-eslint": "~5.0.0",
    "@vue/cli-plugin-typescript": "^5.0.8",
    "@vue/cli-plugin-unit-mocha": "^5.0.8",
    "@vue/cli-service": "~5.0.0",
    "@vue/compiler-sfc": "^3.3.4",
    "@vue/test-utils": "^2.4.1",
    "chai": "^4.3.10",
    "core-js": "^3.8.3",
    "eslint": "^7.32.0",
    "eslint-plugin-vue": "^8.7.1",
    "html-loader": "^4.2.0",
    "jsdoc": "^4.0.2",
    "jsdoc-vuejs": "^4.0.0",
    "odata": "^2.0.0",
    "sass": "^1.67.0",
    "sass-loader": "^13.3.2",
    "vue": "^3.2.13",
    "vue-i18n": "^9.5.0",
    "vue-router": "^4.2.4",
    "vuex": "^4.0.2"
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not dead",
    "not ie 11"
  ]
}

Questions:

• How to debug the SyntaxError? (the message is not very usefull)
• Is the mix js/ts a problem?