77 lines
1.9 KiB
JavaScript
77 lines
1.9 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.measureScrollbar = measureScrollbar;
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exports.debounce = debounce;
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exports.warningOnce = warningOnce;
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var _warning = require('warning');
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var _warning2 = _interopRequireDefault(_warning);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
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var scrollbarWidth = void 0;
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// Measure scrollbar width for padding body during modal show/hide
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var scrollbarMeasure = {
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position: 'absolute',
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top: '-9999px',
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width: '50px',
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height: '50px',
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overflow: 'scroll'
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};
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function measureScrollbar() {
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if (typeof document === 'undefined' || typeof window === 'undefined') {
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return 0;
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}
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if (scrollbarWidth) {
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return scrollbarWidth;
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}
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var scrollDiv = document.createElement('div');
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for (var scrollProp in scrollbarMeasure) {
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if (scrollbarMeasure.hasOwnProperty(scrollProp)) {
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scrollDiv.style[scrollProp] = scrollbarMeasure[scrollProp];
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}
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}
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document.body.appendChild(scrollDiv);
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var width = scrollDiv.offsetWidth - scrollDiv.clientWidth;
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document.body.removeChild(scrollDiv);
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scrollbarWidth = width;
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return scrollbarWidth;
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}
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function debounce(func, wait, immediate) {
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var timeout = void 0;
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return function debounceFunc() {
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var context = this;
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var args = arguments;
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// https://fb.me/react-event-pooling
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if (args[0] && args[0].persist) {
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args[0].persist();
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}
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var later = function later() {
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timeout = null;
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if (!immediate) {
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func.apply(context, args);
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}
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};
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var callNow = immediate && !timeout;
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clearTimeout(timeout);
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timeout = setTimeout(later, wait);
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if (callNow) {
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func.apply(context, args);
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}
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};
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}
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var warned = {};
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function warningOnce(condition, format, args) {
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if (!warned[format]) {
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(0, _warning2["default"])(condition, format, args);
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warned[format] = true;
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}
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}
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