57 lines
1.2 KiB
JavaScript
57 lines
1.2 KiB
JavaScript
'use strict';
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var isPlainObject = require('is-plain-object');
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var defaults = require('object.defaults/immutable');
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module.exports = function(obj, fn, opts) {
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if (!isObject(obj)) {
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return;
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}
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if (typeof fn !== 'function') {
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return;
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}
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if (!isPlainObject(opts)) {
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opts = {};
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}
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forEachChild(obj, '', fn, 0, opts);
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};
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function forEachChild(node, baseKey, fn, depth, opts) {
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var keys = Object.keys(node);
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if (typeof opts.sort === 'function') {
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var sortedKeys = opts.sort(keys);
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if (Array.isArray(sortedKeys)) {
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keys = sortedKeys;
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}
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}
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depth += 1;
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for (var i = 0, n = keys.length; i < n; i++) {
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var key = keys[i];
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var keyChain = baseKey + '.' + key;
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var value = node[key];
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var nodeInfo = defaults(opts);
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nodeInfo.name = key;
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nodeInfo.index = i;
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nodeInfo.count = n;
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nodeInfo.depth = depth;
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nodeInfo.parent = node;
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var notDigg = fn(value, keyChain.slice(1), nodeInfo);
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if (notDigg || !isPlainObject(value)) {
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continue;
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}
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forEachChild(value, keyChain, fn, depth, opts);
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}
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}
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function isObject(v) {
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return Object.prototype.toString.call(v) === '[object Object]';
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}
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