A map where the values are weak.

import WeakValueMap from '@snek/wvm';

const map = new WeakValueMap();
map.set('some key', someBigObject);

• iterable An Array or other iterable object whose elements are key-value pairs (arrays with two elements, e.g. [[ 1, { a: 1 } ], [ 2, { a: 2 } ]]). Each key-value pair is added to the new Map; null values are treated as undefined.
• options
  • eager A boolean option indicating whether collected items should be eagerly tracked and removed from the map. If you have concerns about GC pressure, you may want to consider disabling this option. Default: true.