tsconfig.json

{
  "compilerOptions": {
    "moduleResolution": "node",
    "target": "es2017",
    /**
      Svelte Preprocess cannot figure out whether you have a value or a type, so tell TypeScript
      to enforce using `import type` instead of `import` for Types.
     */
    "importsNotUsedAsValues": "error",
    "isolatedModules": true,
    /**
      To have warnings/errors of the Svelte compiler at the correct position,
      enable source maps by default.
     */
    "sourceMap": true,
    /** Requests the runtime types from the svelte modules by default. Needed for TS files or else you get errors. */
    "types": [],
    "lib": [
      "DOM",
      "ES2015",
      "ES2016",
      "ES2017"
    ],
    "module": "esnext",
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": false,
    "forceConsistentCasingInFileNames": true,
    "noEmitOnError": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    "resolveJsonModule": true,
    "importHelpers": true,
    "rootDir": "./src",
    "baseUrl": "./",
    "paths": {
      "svelte-lightweight-charts": ["./dist"],
      "svelte-lightweight-charts/*": ["./dist/*"],
    }
  },
  "include": [
    "src/**/*"
  ],
  "exclude": [
    "node_modules/**/*",
    "src/package/**/__tests__/**/*"
  ]
}