Speedtest-Tracker/conf/site/node_modules/collect.js/docs/api/unless.md

unless()

The unless method will execute the given callback when the first argument given to the method evaluates to false:

const collection = collect([1, 2, 3]);

collection.unless(false, items => items.push(4));

collection.all();

// [1, 2, 3, 4]

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