tsconfig-base.json

{
    "compilerOptions": {
        /* Basic Options */
        "target": "es2017",
        "module": "commonjs",
        "lib": ["es2017"],
        "declaration": true,
        "declarationMap": true,
        "sourceMap": true,
        "composite": true,
        // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */

        /* Strict Type-Checking Options */
        "strict": true,

        /* Additional Checks */
        "noUnusedLocals": true,                /* Report errors on unused locals. */
        "noUnusedParameters": true,            /* Report errors on unused parameters. */
        "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
        "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */

        /* Module Resolution Options */
        "moduleResolution": "node",
        // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */

        /* Advanced Options */
        "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
    }
}