| 1 | import sourceEvent from "./sourceEvent";
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| 2 | import point from "./point";
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| 3 |
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| 4 | export default function(node, touches, identifier) {
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| 5 | if (arguments.length < 3) identifier = touches, touches = sourceEvent().changedTouches;
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| 6 |
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| 7 | for (var i = 0, n = touches ? touches.length : 0, touch; i < n; ++i) {
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| 8 | if ((touch = touches[i]).identifier === identifier) {
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| 9 | return point(node, touch);
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| 10 | }
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| 11 | }
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| 12 |
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| 13 | return null;
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| 14 | }
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