10 lines
568 B
JavaScript
10 lines
568 B
JavaScript
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// Given something array like (or null), returns something that is strictly an
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// array. This is used to ensure that array-like objects passed to d3.selectAll
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// or selection.selectAll are converted into proper arrays when creating a
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// selection; we don’t ever want to create a selection backed by a live
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// HTMLCollection or NodeList. However, note that selection.selectAll will use a
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// static NodeList as a group, since it safely derived from querySelectorAll.
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export default function array(x) {
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return x == null ? [] : Array.isArray(x) ? x : Array.from(x);
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}
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