| 1 | /**
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| 2 | * Removes a key and all it's referencies form a map. This function oeprates withous side-effects
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| 3 | * and returns a new map.
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| 4 | *
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| 5 | * @param {Map} map - Map to remove the key from
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| 6 | * @param {string} key - Key to remove from the map
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| 7 | * @return {Map} New map without the passed key
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| 8 | */
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| 9 | function removeDeepFromMap(map, key) {
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| 10 | const newMap = new Map();
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| 11 |
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| 12 | for (const [aKey, val] of map) {
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| 13 | if (aKey !== key && val instanceof Map) {
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| 14 | newMap.set(aKey, removeDeepFromMap(val, key));
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| 15 | } else if (aKey !== key) {
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| 16 | newMap.set(aKey, val);
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| 17 | }
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| 18 | }
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| 19 |
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| 20 | return newMap;
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| 21 | }
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| 22 |
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| 23 | module.exports = removeDeepFromMap;
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