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87 lines
3.1 KiB
JavaScript
87 lines
3.1 KiB
JavaScript
9 months ago
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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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0 && (module.exports = {
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isBlockedPage: null,
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cleanAmpPath: null,
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debounce: null
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});
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function _export(target, all) {
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for(var name in all)Object.defineProperty(target, name, {
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enumerable: true,
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get: all[name]
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});
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}
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_export(exports, {
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isBlockedPage: function() {
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return isBlockedPage;
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},
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cleanAmpPath: function() {
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return cleanAmpPath;
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},
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debounce: function() {
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return debounce;
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}
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});
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const _constants = require("../shared/lib/constants");
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function isBlockedPage(page) {
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return _constants.BLOCKED_PAGES.includes(page);
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}
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function cleanAmpPath(pathname) {
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if (pathname.match(/\?amp=(y|yes|true|1)/)) {
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pathname = pathname.replace(/\?amp=(y|yes|true|1)&?/, "?");
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}
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if (pathname.match(/&=(y|yes|true|1)/)) {
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pathname = pathname.replace(/&=(y|yes|true|1)/, "");
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}
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pathname = pathname.replace(/\?$/, "");
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return pathname;
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}
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function debounce(fn, ms, maxWait = Infinity) {
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let timeoutId;
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// The time the debouncing function was first called during this debounce queue.
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let startTime = 0;
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// The time the debouncing function was last called.
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let lastCall = 0;
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// The arguments and this context of the last call to the debouncing function.
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let args, context;
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// A helper used to that either invokes the debounced function, or
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// reschedules the timer if a more recent call was made.
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function run() {
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const now = Date.now();
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const diff = lastCall + ms - now;
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// If the diff is non-positive, then we've waited at least `ms`
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// milliseconds since the last call. Or if we've waited for longer than the
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// max wait time, we must call the debounced function.
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if (diff <= 0 || startTime + maxWait >= now) {
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// It's important to clear the timeout id before invoking the debounced
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// function, in case the function calls the debouncing function again.
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timeoutId = undefined;
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fn.apply(context, args);
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} else {
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// Else, a new call was made after the original timer was scheduled. We
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// didn't clear the timeout (doing so is very slow), so now we need to
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// reschedule the timer for the time difference.
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timeoutId = setTimeout(run, diff);
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}
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}
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return function(...passedArgs) {
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// The arguments and this context of the most recent call are saved so the
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// debounced function can be invoked with them later.
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args = passedArgs;
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context = this;
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// Instead of constantly clearing and scheduling a timer, we record the
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// time of the last call. If a second call comes in before the timer fires,
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// then we'll reschedule in the run function. Doing this is considerably
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// faster.
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lastCall = Date.now();
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// Only schedule a new timer if we're not currently waiting.
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if (timeoutId === undefined) {
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startTime = lastCall;
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timeoutId = setTimeout(run, ms);
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}
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};
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}
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//# sourceMappingURL=utils.js.map
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