elmish-core-ts
v0.0.2-alpha
Published
Write more functional the Elm way with your TypeScript
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elmish-core-ts
A library for writing more functional the Elm way with your TypeScript.
Examples
pipe
import { pipe } from "elmish-core-ts";
const addOne = (val: number) => val + 1;
const addWith = (withWhat: number) => (val: number) => val + withWhat;
const toString = (val: number): string => String(val);
const appendWith = (withWhat: string) => (val: string) => val + withWhat;
console.log(
pipe(
addOne(0), // 0 + 1
addWith(5), // 1 + 5
toString, // "6"
appendWith("!") // "6!"
)
); // 6!
Maybe
import { Just, Maybe, Nothing, pipe } from "elmish-core-ts";
console.log(Maybe.withDefault("1970-01-01")(Just("1999-12-31"))); // 1999-12-31
console.log(Maybe.withDefault("1970-01-01")(Nothing)); // 1970-01-01
console.log(
pipe(
Just("1999-12-31"),
Maybe.withDefault("1970-01-01")
)
); // 1999-12-31
console.log(
pipe(
Nothing,
Maybe.withDefault("1970-01-01")
)
); // 1970-12-31