'use strict';
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Object.defineProperty(exports, '__esModule', { value: true });
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var vue = require('vue');
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var shared = require('@vue/shared');
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require('../../../hooks/index.js');
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require('../../../utils/index.js');
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var index = require('../../../hooks/use-forward-ref/index.js');
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var error = require('../../../utils/error.js');
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var index$1 = require('../../../hooks/use-namespace/index.js');
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const NAME = "ElOnlyChild";
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const OnlyChild = vue.defineComponent({
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name: NAME,
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setup(_, {
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slots,
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attrs
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}) {
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var _a;
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const forwardRefInjection = vue.inject(index.FORWARD_REF_INJECTION_KEY);
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const forwardRefDirective = index.useForwardRefDirective((_a = forwardRefInjection == null ? void 0 : forwardRefInjection.setForwardRef) != null ? _a : shared.NOOP);
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return () => {
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var _a2;
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const defaultSlot = (_a2 = slots.default) == null ? void 0 : _a2.call(slots, attrs);
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if (!defaultSlot)
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return null;
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if (defaultSlot.length > 1) {
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error.debugWarn(NAME, "requires exact only one valid child.");
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return null;
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}
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const firstLegitNode = findFirstLegitChild(defaultSlot);
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if (!firstLegitNode) {
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error.debugWarn(NAME, "no valid child node found");
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return null;
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}
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return vue.withDirectives(vue.cloneVNode(firstLegitNode, attrs), [[forwardRefDirective]]);
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};
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}
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});
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function findFirstLegitChild(node) {
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if (!node)
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return null;
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const children = node;
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for (const child of children) {
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if (shared.isObject(child)) {
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switch (child.type) {
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case vue.Comment:
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continue;
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case vue.Text:
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case "svg":
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return wrapTextContent(child);
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case vue.Fragment:
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return findFirstLegitChild(child.children);
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default:
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return child;
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}
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}
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return wrapTextContent(child);
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}
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return null;
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}
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function wrapTextContent(s) {
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const ns = index$1.useNamespace("only-child");
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return vue.createVNode("span", {
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"class": ns.e("content")
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}, [s]);
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}
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exports.OnlyChild = OnlyChild;
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//# sourceMappingURL=only-child.js.map
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