- reduceKey<S, T>(subject, callbackfn, initialValue): T
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Type Parameters
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S extends Record<string | number | symbol, any>
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T
Parameters
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subject: S
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callbackfn: ((previousValue, key, currentIndex, array, subject) => T)
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- (previousValue, key, currentIndex, array, subject): T
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Parameters
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previousValue: T
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key: keyof S
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currentIndex: number
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array: string[]
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subject: S
Returns T
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initialValue: T
Returns T
Deprecated
renamed to reduceByKey