tsconfig.json

{
    "compilerOptions": {
        // Target latest version of ECMAScript.
        "target": "es2018",
        "module": "esnext",
        "lib": ["es5", "es6", "dom", "esnext"],
        // Search under node_modules for non-relative imports.
        "moduleResolution": "node",
        // Process & infer types from .js files.
        "allowJs": true,
        // Enable strictest settings like strictNullChecks & noImplicitAny.
        "strict": true,
        // Disallow features that require cross-file information for emit.
        "isolatedModules": true,
        // Import non-ES modules as default imports.
        "esModuleInterop": true,
        "skipLibCheck": true,
        "resolveJsonModule": true,
        "allowSyntheticDefaultImports": true,
        "declaration": true,
        "noEmit": true,
        "declarationDir": "types",
        "outDir": "out-tsc",
        "sourceMap": true,
        "rootDir": "./src"
    },
    "files": ["src/SecureStorageFactory.ts"],
    "include": ["src"],
    "exclude": ["node_modules", "demo", "dist"]
}