@fast-check/poisoning/lib/internals/PoisoningFreeMap.js

Set of utilities to ease detection and revert of poisoning

const SMap = Map;
const safeMapGet = Map.prototype.get;
const safeMapHas = Map.prototype.has;
const safeMapEntries = Map.prototype.entries;
const safeMapSet = Map.prototype.set;
const safeObjectDefineProperty = Object.defineProperty;
export const GetSymbol = Symbol('safe.get');
export const HasSymbol = Symbol('safe.has');
export const EntriesSymbol = Symbol('safe.entries');
export const SetSymbol = Symbol('safe.set');
function toPoisoningFreeMap(instance) {
    safeObjectDefineProperty(instance, GetSymbol, {
        value: safeMapGet,
        configurable: false,
        enumerable: false,
        writable: false,
    });
    safeObjectDefineProperty(instance, HasSymbol, {
        value: safeMapHas,
        configurable: false,
        enumerable: false,
        writable: false,
    });
    safeObjectDefineProperty(instance, EntriesSymbol, {
        value: safeMapEntries,
        configurable: false,
        enumerable: false,
        writable: false,
    });
    safeObjectDefineProperty(instance, SetSymbol, {
        value: safeMapSet,
        configurable: false,
        enumerable: false,
        writable: false,
    });
    return instance;
}
export const PoisoningFreeMap = {
    from(ins) {
        return toPoisoningFreeMap(new SMap(ins));
    },
};