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20 lines
523 B
JavaScript
20 lines
523 B
JavaScript
// @flow
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/**
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* A type used for returning and propagating errors. The first element of the union
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* represents success and contains a value, and the second represents an error and
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* contains an error value.
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* @private
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*/
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export type Result<T, E> =
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| {| result: 'success', value: T |}
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| {| result: 'error', value: E |};
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export function success<T, E>(value: T): Result<T, E> {
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return {result: 'success', value};
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}
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export function error<T, E>(value: E): Result<T, E> {
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return {result: 'error', value};
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}
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