tsconfig.json

{
    "ts-node": { // ts-node automated configuration using commonjs
        "compilerOptions": {
            "module": "CommonJS"
        }
    },
    "include": [
        "src",
        "test",
    ],
    "exclude": [
        "ignore",
        "build",
        "dist",
        "node_modules",
        "**/node_modules",
    ],
    "compilerOptions": {
        "module": "CommonJS",
        "target": "ESNext",
        "jsx": "react-jsx",
        "allowSyntheticDefaultImports": true,
        "noImplicitAny": false,
        "strict": false,
        "strictPropertyInitialization": false,
        "isolatedModules": false,
        "experimentalDecorators": true,
        "sourceMap": true,
        "esModuleInterop": true,
        "downlevelIteration": true,
        "outDir": "dist",
        "declaration": true,
        "declarationMap": true,
        "types": [
            "node",
            // VSCode complains if we don't include this in `tsconfig.json`.
            // Doesn't matter that it's included in `tsconfig.test.json`.
            "mocha",
        ],
        "lib": [
            // "dom",
            // "dom.iterable",
            "esnext",
            // "es5",
            // "es2015.collection",
            // "es2015.promise",
        ],
        "typeRoots": [
            "./node_modules/@types",
            "./src/@types",
        ],
        "baseUrl": ".",
        "paths": {
            "@src/*":   ["./src/*"],
            "@helpers": ["./test/test-helpers.ts"],
        },
    },
}