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Stuck out to me too, but the article is wrong, they didn't "reduce blocking time" by 11%, they reduced how long it takes to complete "JS Long Tasks" by 11% (63ms).

They do claim a "reduction in JS size" on all JS apps "between 31% and 49%."




Ahh, nice. Thanks. Believe it or not, "long tasks" is a meaningful term: https://developer.mozilla.org/en-US/docs/Web/API/Long_Tasks_.... They're what Time to Interactive measures.




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