tsconfig.json

{
    "compilerOptions": {
        "target": "es5",
        "baseUrl": "./",
        "downlevelIteration": true,
        "lib": [
            "dom",
            "dom.iterable",
            "esnext",
            "ES5",
            "es2015",
            "es2015.collection",
            "es2015.iterable"
        ],
        "allowJs": true,
        "skipLibCheck": true,
        "esModuleInterop": true,
        "allowSyntheticDefaultImports": true,
        "strict": true,
        "forceConsistentCasingInFileNames": true,
        "noFallthroughCasesInSwitch": true,
        "module": "esnext",
        "moduleResolution": "node",
        "resolveJsonModule": true,
        "isolatedModules": true,
        "noEmit": true,
        "jsx": "react-jsx",
        "outDir": "dist",
        "declaration": true,
        "declarationMap": true,
        "types": ["node", "jest", "@testing-library/jest-dom", "webmidi"]
    },
    "include": ["src", "src/**/*"],
    "exclude": ["node_modules"]
}