assert-or-return/dist/index.js

Type-safe assertion library with decorator-based early returns for TypeScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Ok = Ok;
exports.Err = Err;
exports.assert = assert;
exports.HasAssertions = HasAssertions;
function Ok(data) {
    return { success: true, data };
}
function Err(error) {
    return { success: false, error };
}
class AssertionError extends Error {
    constructor(message) {
        super(message);
        this.name = "AssertionError";
    }
}
function assert(value, errorMessage) {
    if (!value) {
        throw new AssertionError(errorMessage);
    }
}
function HasAssertions() {
    return function (target, propertyName, descriptor) {
        const method = descriptor.value;
        descriptor.value = ((...args) => {
            try {
                return method.apply(target, args);
            }
            catch (error) {
                if (error instanceof AssertionError) {
                    return Err(error.message);
                }
                throw error;
            }
        });
    };
}