| 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | var tslib_1 = require("tslib");
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| 4 | var react_1 = require("react");
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| 5 | var useIsomorphicLayoutEffect_1 = tslib_1.__importDefault(require("./useIsomorphicLayoutEffect"));
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| 6 | var util_1 = require("./misc/util");
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| 7 | var defaultState = {
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| 8 | x: 0,
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| 9 | y: 0,
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| 10 | width: 0,
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| 11 | height: 0,
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| 12 | top: 0,
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| 13 | left: 0,
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| 14 | bottom: 0,
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| 15 | right: 0,
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| 16 | };
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| 17 | function useMeasure() {
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| 18 | var _a = react_1.useState(null), element = _a[0], ref = _a[1];
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| 19 | var _b = react_1.useState(defaultState), rect = _b[0], setRect = _b[1];
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| 20 | var observer = react_1.useMemo(function () {
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| 21 | return new window.ResizeObserver(function (entries) {
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| 22 | if (entries[0]) {
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| 23 | var _a = entries[0].contentRect, x = _a.x, y = _a.y, width = _a.width, height = _a.height, top_1 = _a.top, left = _a.left, bottom = _a.bottom, right = _a.right;
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| 24 | setRect({ x: x, y: y, width: width, height: height, top: top_1, left: left, bottom: bottom, right: right });
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| 25 | }
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| 26 | });
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| 27 | }, []);
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| 28 | useIsomorphicLayoutEffect_1.default(function () {
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| 29 | if (!element)
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| 30 | return;
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| 31 | observer.observe(element);
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| 32 | return function () {
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| 33 | observer.disconnect();
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| 34 | };
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| 35 | }, [element]);
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| 36 | return [ref, rect];
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| 37 | }
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| 38 | exports.default = util_1.isBrowser && typeof window.ResizeObserver !== 'undefined'
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| 39 | ? useMeasure
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| 40 | : (function () { return [util_1.noop, defaultState]; });
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