tslint.json

{
    "extends": ["tslint:latest", "tslint-config-prettier", "tslint-immutable"],
    "rules": {
        "interface-name": [true, "never-prefix"],
        // TODO: allow devDependencies only in **/*.spec.ts files:
        // waiting on https://github.com/palantir/tslint/pull/3708
        "no-implicit-dependencies": [true, "dev"],

        /* tslint-immutable rules */
        // Recommended built-in rules
        "no-var-keyword": true,
        "no-parameter-reassignment": true,
        "typedef": [true, "call-signature"],

        // Immutability rules
        "readonly-keyword": true,
        "readonly-array": false,
        "no-let": true,
        "no-object-mutation": true,
        "no-delete": true,
        "no-method-signature": true,

        // Functional style rules
        "no-this": true,
        "no-class": true,
        "no-mixed-interface": true,
        "no-expression-statement": [
            true,
            {
                "ignore-prefix": [
                    "console.",
                    "process.exit",
                    "describe",
                    "it",
                    "expect"
                ]
            }
        ],
        "no-if-statement": true,
        /* end tslint-immutable rules */

        "no-submodule-imports": [true, "rxjs"],
        "object-literal-sort-keys": false,
        "mocha-no-side-effect-code": false
    }
}