map | /mod.ts | pazza@v0.3.0

Parser combinators library designed for Deno, but also works on browsers and Node.js.

function map

Re-export

import { map } from "https://deno.land/x/pazza@v0.3.0/mod.ts";

map<T, U, E, I extends Input, CtxIn, CtxOut>(parser: IParser<T, E, I, CtxIn, CtxOut>, fn: (output: T) => U): IParser<U, E, I, CtxIn, CtxOut>

Execute the embedded parser. If it succeeds, apply provided function on the output.

const parser = map(digit(), value => Number.parseInt(value));
parser("5").output === 5;

Type Parameters

I extends Input

CtxIn

CtxOut

embededd parser

fn: (output: T) => U

function to be applied on successful output