{
  "compilerOptions": {
    "target": "es2018",
    "module": "esnext",
    "moduleResolution": "node",
    "strict": true,
    "sourceMap": true,
    "stripInternal": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "importHelpers": true,
    "lib": [
      "esnext",
      "dom"
    ]
  },
  "exclude": [
    "node_modules",
    "dist",
    "webpack.config.js"
  ]
}

{
  "compilerOptions": {
    "target": "es5",
    "module": "esnext",
    "moduleResolution": "node",
    "strict": true,
    "sourceMap": true,
    "stripInternal": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "importHelpers": true,
    "lib": [
      "esnext",
      "dom"
    ]
  },
  "exclude": [
    "node_modules",
    "dist",
    "webpack.config.js"
  ]
}

Change compilation target to es5
Change compilation target to es5
