function

jsc.edenGC

function edenGC(): number;

Runs an eden (young generation) garbage collection synchronously.

JavaScriptCore's collector is generational: an eden collection only examines objects allocated since the previous collection, so it is much cheaper than fullGC, but it cannot free an object that survived an earlier collection.

@returns

The size of the heap in bytes after the most recent eden collection, as heapSize measures it