cmd-ts
Version:
> 💻 A type-driven command line argument parser, with awesome error reporting 🤤
42 lines • 1.01 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.safeAsync = exports.isErr = exports.isOk = exports.err = exports.ok = void 0;
function ok(value) {
return { _tag: 'ok', value };
}
exports.ok = ok;
function err(error) {
return { _tag: 'error', error };
}
exports.err = err;
/**
* Checks whether a value is an `Ok`.
* Handy with TypeScript guards
*/
function isOk(result) {
return result._tag === 'ok';
}
exports.isOk = isOk;
/**
* Checks whether a value is an `Err`.
* Handy with TypeScript guards
*/
function isErr(either) {
return either._tag === 'error';
}
exports.isErr = isErr;
/**
* Convert a `Promise<T>` into a `Promise<Result<Error, T>>`,
* therefore catching the errors and being able to handle them explicitly
*/
async function safeAsync(promise) {
try {
const value = await promise;
return ok(value);
}
catch (e) {
return err(e);
}
}
exports.safeAsync = safeAsync;
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