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18 lines
577 B
JavaScript
18 lines
577 B
JavaScript
import canUsePassiveEventListeners from './canUsePassiveEventListeners';
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export default function normalizeEventOptions(eventOptions) {
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if (!eventOptions) {
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return undefined;
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}
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if (!canUsePassiveEventListeners()) {
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// If the browser does not support the passive option, then it is expecting
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// a boolean for the options argument to specify whether it should use
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// capture or not. In more modern browsers, this is passed via the `capture`
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// option, so let's just hoist that value up.
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return !!eventOptions.capture;
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}
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return eventOptions;
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}
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