33 lines
921 B
JavaScript
33 lines
921 B
JavaScript
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"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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exports.__esModule = true;
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exports.default = void 0;
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var _inDOM = _interopRequireDefault(require("../util/inDOM"));
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var _default = function () {
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// HTML DOM and SVG DOM may have different support levels,
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// so we need to check on context instead of a document root element.
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return _inDOM.default ? function (context, node) {
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if (context.contains) {
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return context.contains(node);
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} else if (context.compareDocumentPosition) {
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return context === node || !!(context.compareDocumentPosition(node) & 16);
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} else {
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return fallback(context, node);
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}
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} : fallback;
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}();
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exports.default = _default;
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function fallback(context, node) {
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if (node) do {
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if (node === context) return true;
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} while (node = node.parentNode);
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return false;
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}
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module.exports = exports["default"];
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