assertthat/build/lib/types/Recursion.js

assertthat provides fluent TDD.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.recursion = exports.isRecursion = void 0;
const recursionSymbol = Symbol('recursion');
const recursion = function (parameters) {
    return {
        type: recursionSymbol,
        ...parameters
    };
};
exports.recursion = recursion;
const isRecursion = function (value) {
    return typeof value === 'object' &&
        value !== null &&
        'type' in value &&
        value.type === recursionSymbol;
};
exports.isRecursion = isRecursion;