Rune Harlyk
43 lines
683 B
TypeScript
43 lines
683 B
TypeScript
export class Err<T, U> {
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#inner: T;
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#exception?: U;
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constructor(inner: T, exception?: U) {
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this.#inner = inner;
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this.#exception = exception;
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}
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get inner(): T {
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return this.#inner;
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}
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get exception(): U | undefined {
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return this.#exception;
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}
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/**
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* Type guard for `Ok`
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* @returns `true` if `Ok`; `false` if `Err`
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*/
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isOk(): false {
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return false;
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}
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/**
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* Type guard for `Err`
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* @returns `true` if `Err`; `false` if `Ok`
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*/
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isErr(): this is Err<T, U> {
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return true;
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}
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/**
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* Create an `Err`
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* @param inner
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* @returns `Err(inner)`
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*/
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static new<E, F>(inner: E, exception: F): Err<E, F> {
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return new Err<E, F>(inner, exception);
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}
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}
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