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57 lines
1.2 KiB
57 lines
1.2 KiB
'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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