10 lines
264 B
JavaScript
10 lines
264 B
JavaScript
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export default function(value) {
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return this.eachAfter(function(node) {
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var sum = +value(node.data) || 0,
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children = node.children,
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i = children && children.length;
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while (--i >= 0) sum += children[i].value;
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node.value = sum;
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});
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}
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