tsconfig.json

{
    "compilerOptions": {
        "target": "ESNext", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
        "module": "CommonJS", /* Specify what module code is generated. */
        "declaration": true,
        "declarationMap": true,
        "declarationDir": "./out/",
        "rootDir": "./", /* Specify the root folder within your source files. */
        "moduleResolution": "node", /* Specify how TypeScript looks up a file from a given module specifier. */
        "typeRoots": [
            "node_modules/@types"
        ], /* Specify multiple folders that act like './node_modules/@types'. */
        "types": [
            "node",
            "jest"
        ], /* Specify type package names to be included without being referenced in a source file. */
        "baseUrl": "./",
        "paths": {
            "@src/*": [
                "src/*"
            ],
            "test/*": [
                "tests/*"
            ],
            "*": [
                "node_modules/*"
            ]
        },
        "inlineSourceMap": true,
        "outDir": "./out/", /* Specify an output folder for all emitted files. */
        "esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
        "forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */
        /* Type Checking */
        "strict": true, /* Enable all strict type-checking options. */
        "noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */
        "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */
        "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
        "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */
        "noUnusedLocals": true, /* Enable error reporting when local variables aren't read. */
        "noUnusedParameters": true, /* Raise an error when a function parameter isn't read. */
        "noImplicitReturns": true, /* Enable error reporting for codepaths that do not explicitly return in a function. */
        "skipLibCheck": true /* Skip type checking all .d.ts files. */,
        "allowJs": true,
        "resolveJsonModule": true, /* We want to import the package.json so we can extract our version. */
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true,

    },
    "include": [
        "src/**/*",
        // test included here to help VSCode intellisense,
        // build will use tsconfig.build.json to exclude it
        "tests/**/*"
    ],
}