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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | 2x 2x 22x 22x 108x 108x 108x 19x 108x 70x 70x 11x 1x 11x 59x 59x 59x | export class LruMap<K, V> extends Map<K, V> {
constructor(
// 2^30 - 1 (a SMI in V8, for 32-bit platforms)
public readonly limit: number = 1073741823,
) {
super();
}
public set(key: K, value: V): this {
super.delete(key);
super.set(key, value);
if (super.size > this.limit) super.delete(super.keys().next().value!);
return this;
}
public get(key: K): V | undefined {
const value = super.get(key)!;
if (value === void 0) {
if (super.delete(key)) super.set(key, value);
return value;
}
super.delete(key);
super.set(key, value);
return value;
}
}
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