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50 lines
1.3 KiB
50 lines
1.3 KiB
var nestRE = /^(attrs|props|on|nativeOn|class|style|hook)$/ |
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module.exports = function mergeJSXProps (objs) { |
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return objs.reduce(function (a, b) { |
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var aa, bb, key, nestedKey, temp |
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for (key in b) { |
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aa = a[key] |
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bb = b[key] |
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if (aa && nestRE.test(key)) { |
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// normalize class |
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if (key === 'class') { |
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if (typeof aa === 'string') { |
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temp = aa |
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a[key] = aa = {} |
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aa[temp] = true |
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} |
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if (typeof bb === 'string') { |
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temp = bb |
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b[key] = bb = {} |
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bb[temp] = true |
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} |
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} |
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if (key === 'on' || key === 'nativeOn' || key === 'hook') { |
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// merge functions |
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for (nestedKey in bb) { |
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aa[nestedKey] = mergeFn(aa[nestedKey], bb[nestedKey]) |
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} |
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} else if (Array.isArray(aa)) { |
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a[key] = aa.concat(bb) |
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} else if (Array.isArray(bb)) { |
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a[key] = [aa].concat(bb) |
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} else { |
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for (nestedKey in bb) { |
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aa[nestedKey] = bb[nestedKey] |
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} |
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} |
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} else { |
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a[key] = b[key] |
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} |
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} |
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return a |
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}, {}) |
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} |
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function mergeFn (a, b) { |
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return function () { |
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a && a.apply(this, arguments) |
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b && b.apply(this, arguments) |
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} |
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}
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