| 1 | var get = require('./get')
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| 2 | var set = require('./set')
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| 3 | var assign = require('object-assign')
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| 4 |
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| 5 | module.exports = function extendIn (source, keypath, extensions) {
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| 6 | if (keypath.length === 0) return assign({}, source, extensions)
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| 7 |
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| 8 | var data = assign({}, get(source, keypath))
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| 9 |
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| 10 | for (var i = 2, len = arguments.length; i < len; i++) {
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| 11 | assign(data, arguments[i])
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| 12 | }
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| 13 |
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| 14 | return set(source, keypath, data)
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| 15 | }
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