@mvst/ts-unions/dist/remote-data.js

TypeScript union types for Maybe and RemoteData with pattern matching

import { curry } from "./utils.js";
function notAsked() {
    return { type: "NotAsked" };
}
function loading() {
    return { type: "Loading" };
}
function success(value) {
    return { type: "Success", value };
}
function error(error) {
    return { type: "Error", error };
}
function isSuccess(remoteData) {
    return remoteData.type === "Success";
}
function isError(remoteData) {
    return remoteData.type === "Error";
}
function isLoading(remoteData) {
    return remoteData.type === "Loading";
}
function isNotAsked(remoteData) {
    return remoteData.type === "NotAsked";
}
const withDefault = curry(function withDefault(defaultValue, remoteData) {
    return isSuccess(remoteData) ? remoteData.value : defaultValue;
});
const when = curry(function when(pattern, remoteData) {
    const { notAsked, loading, success, error, _ = Function.prototype } = pattern;
    switch (remoteData.type) {
        case "NotAsked":
            return typeof notAsked === "function" ? notAsked() : _();
        case "Loading":
            return typeof loading === "function" ? loading() : _();
        case "Success":
            return typeof success === "function" ? success(remoteData.value) : _();
        case "Error":
            return typeof error === "function" ? error(remoteData.error) : _();
    }
});
const map = curry(function map(fn, remoteData) {
    return isSuccess(remoteData) ? success(fn(remoteData.value)) : remoteData;
});
const andThen = curry(function andThen(fn, remoteData) {
    return isSuccess(remoteData) ? fn(remoteData.value) : remoteData;
});
export { andThen, error, isError, isLoading, isNotAsked, isSuccess, loading, map, notAsked, success, when, withDefault, };