tsconfig.json

{
    "compilerOptions": {
        "strict": true,
        "strictNullChecks": true,
        "module": "commonjs",
        "moduleResolution": "node",
        "allowSyntheticDefaultImports": true,
        "esModuleInterop": true,
        "outDir": "./dist",
        "target": "es2015",
        "lib": [
            "es2015",
            "es2016.array.include"
        ],
        "sourceMap": true,
        "declaration": true,
        "typeRoots": [
            "types",
            "node_modules/@types"
        ],
        "types": [
            "jest",
            "node"
        ],
        "baseUrl": ".",
        "paths": {
            "@babel/core": [
                "node_modules/@types/babel-core"
            ],
            "@babel/types": [
                "node_modules/@types/babel-types"
            ],
            "@babel/traverse": [
                "node_modules/@types/babel-traverse"
            ],
            "*": [
                "types/*"
            ]
        },
        "plugins": [
            {
                "name": "typescript-snapshots-plugin"
            }
        ]
    },
    "include": [
        "src/**/*"
    ]
}