source: node_modules/traverse/test/siblings.js

'use strict';

var test = require('tape');
var traverse = require('../');

test('siblings', function (t) {
        var obj = { a: 1, b: 2, c: [4, 5, 6] };

        var res = traverse(obj).reduce(function (acc) {
                /* eslint no-param-reassign: 0 */
                var p = '/' + this.path.join('/');
                if (this.parent) {
                        acc[p] = {
                                siblings: this.parent.keys,
                                key: this.key,
                                index: this.parent.keys.indexOf(this.key),
                        };
                } else {
                        acc[p] = {
                                siblings: [],
                                key: this.key,
                                index: -1,
                        };
                }
                return acc;
        }, {});

        t.same(res, {
                '/': { siblings: [], key: undefined, index: -1 },
                '/a': { siblings: ['a', 'b', 'c'], key: 'a', index: 0 },
                '/b': { siblings: ['a', 'b', 'c'], key: 'b', index: 1 },
                '/c': { siblings: ['a', 'b', 'c'], key: 'c', index: 2 },
                '/c/0': { siblings: ['0', '1', '2'], key: '0', index: 0 },
                '/c/1': { siblings: ['0', '1', '2'], key: '1', index: 1 },
                '/c/2': { siblings: ['0', '1', '2'], key: '2', index: 2 },
        });

        t.end();
});