@ts-rust/std/dist/option/types.d.ts

Rust-inspired utilities for TypeScript: Option, Result, and error handling for safer, more predictable code.

import type { Option, PendingOption } from "./index";
/**
 * Extracts a tuple of underlying value types from an array of {@link Option} or
 * {@link PendingOption} instances.
 *
 * The {@link SomeValues} type maps over a tuple `T` of `Option<unknown>` or
 * `PendingOption<unknown>` types and extracts the value type `U` for each element
 * using conditional type inference. The result is a tuple of the inferred value
 * types corresponding to the input array's elements.
 */
export type SomeValues<T extends readonly (Option<unknown> | PendingOption<unknown>)[]> = {
    [idx in keyof T]: T[idx] extends Option<infer U> ? U : T[idx] extends PendingOption<infer U> ? U : never;
};
/**
 * Extracts a tuple of awaited underlying value types from an array of {@link Option} or
 * {@link PendingOption} instances.
 *
 * The {@link SomeAwaitedValues} type maps over a tuple `T` of `Option<unknown>` or
 * `PendingOption<unknown>` types and extracts the awaited value type `U` for each element
 * using conditional type inference. It applies the `Awaited` utility type to resolve
 * `Promise`-like types within each `U`, making it suitable for handling asynchronous
 * values across multiple instances. The result is a tuple of the awaited inferred value
 * types corresponding to the input array's elements.
 */
export type SomeAwaitedValues<T extends readonly (Option<unknown> | PendingOption<unknown>)[]> = {
    [idx in keyof T]: T[idx] extends Option<infer U> ? Awaited<U> : T[idx] extends PendingOption<infer U> ? Awaited<U> : never;
};
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