tsconfig.json

{
    "ts-node": {
        "transpileOnly": true,
        "moduleTypes": {
            "jest.config.ts": "cjs"
        }
    },
    "include": [
        "src/*.ts",
        "src/**/*.ts",
        "types/**/*.d.ts",
        "types/**/**/*.d.ts",
        "tests/**/*.test.ts"
    ],
    "exclude": ["coverage", "functions", "tests", ".parcel-cache"],
    "files": ["jest.config.ts"],
    "compileOnSave": true,
    "compilerOptions": {
        "removeComments": true,
        "declaration": true,
        "target": "es2018",
        "moduleResolution": "node",
        "typeRoots": ["./node_modules/@types", "./types"],
        "lib": ["dom"],
        "types": ["node", "jest"],
        "resolveJsonModule": true,
        "inlineSourceMap": true,
        "declarationMap": true,
        "allowSyntheticDefaultImports": true,
        "esModuleInterop": true,
        "forceConsistentCasingInFileNames": true,
        "strict": true,
        "isolatedModules": false,
        "skipLibCheck": true,
        "module": "CommonJS"
    }
}