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1 | /**
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2 | * The base implementation of methods like `_.findKey` and `_.findLastKey`,
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3 | * without support for iteratee shorthands, which iterates over `collection`
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4 | * using `eachFunc`.
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5 | *
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6 | * @private
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7 | * @param {Array|Object} collection The collection to inspect.
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8 | * @param {Function} predicate The function invoked per iteration.
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9 | * @param {Function} eachFunc The function to iterate over `collection`.
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10 | * @returns {*} Returns the found element or its key, else `undefined`.
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11 | */
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12 | function baseFindKey(collection, predicate, eachFunc) {
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13 | var result;
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14 | eachFunc(collection, function(value, key, collection) {
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15 | if (predicate(value, key, collection)) {
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16 | result = key;
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17 | return false;
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18 | }
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19 | });
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20 | return result;
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21 | }
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22 |
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23 | module.exports = baseFindKey;
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