forked from daren.hsu/line_push
65 lines
2.0 KiB
JavaScript
65 lines
2.0 KiB
JavaScript
"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.default = exports.Intersect = void 0;
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function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
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function inserted(el, binding) {
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var modifiers = binding.modifiers || {};
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var value = binding.value;
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var _ref = _typeof(value) === 'object' ? value : {
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handler: value,
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options: {}
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},
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handler = _ref.handler,
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options = _ref.options;
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var observer = new IntersectionObserver(function () {
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var entries = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
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var observer = arguments.length > 1 ? arguments[1] : undefined;
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/* istanbul ignore if */
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if (!el._observe) return; // Just in case, should never fire
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// If is not quiet or has already been
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// initted, invoke the user callback
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if (handler && (!modifiers.quiet || el._observe.init)) {
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var isIntersecting = Boolean(entries.find(function (entry) {
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return entry.isIntersecting;
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}));
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handler(entries, observer, isIntersecting);
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} // If has already been initted and
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// has the once modifier, unbind
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if (el._observe.init && modifiers.once) unbind(el); // Otherwise, mark the observer as initted
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else el._observe.init = true;
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}, options);
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el._observe = {
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init: false,
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observer: observer
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};
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observer.observe(el);
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}
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function unbind(el) {
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/* istanbul ignore if */
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if (!el._observe) return;
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el._observe.observer.unobserve(el);
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delete el._observe;
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}
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var Intersect = {
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inserted: inserted,
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unbind: unbind
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};
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exports.Intersect = Intersect;
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var _default = Intersect;
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exports.default = _default;
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//# sourceMappingURL=index.js.map
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