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HTMLSubtitles constructor validation addedff
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@ -2,6 +2,10 @@ var EventEmitter = require('events');
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var subtitleUtils = require('./utils/subtitles');
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var subtitleUtils = require('./utils/subtitles');
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var HTMLSubtitles = function(containerElement) {
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var HTMLSubtitles = function(containerElement) {
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if (!(containerElement instanceof HTMLElement)) {
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throw new Error('Instance of HTMLElement required as a first argument to HTMLSubtitles');
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}
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var events = new EventEmitter();
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var events = new EventEmitter();
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var tracks = Object.freeze([]);
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var tracks = Object.freeze([]);
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var cues = Object.freeze({});
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var cues = Object.freeze({});
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