Optimize bespoke template for bfcache #323
Merged
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Back/forward cache (a.k.a bfcache) is the browser optimization for enabling instant back and forward navigation. Firefox and Safari have enabled while a long time, and recently it has added to Chrome for mobile.
Marp CLI's bespoke template has disabled bfcache by adding
unload
event. So I refactored some bespoke plugins to use new Page Lifecycle API. A notable change is in sync plugin: Persist sync key between navigation, through history state instead of URL query parameter.By this change, the slide HTML can get a 100% Lighthouse Best Practice score.