parjs/internal/combinators/flatten.js

A parser-combinator library for JavaScript.

"use strict";
/** @module parjs/combinators */ /** */
Object.defineProperty(exports, "__esModule", { value: true });
const map_1 = require("./map");
function flattenNestedArrays(arr) {
    if (!Array.isArray(arr)) {
        return [arr];
    }
    let items = [];
    for (let item of arr) {
        if (Array.isArray(item)) {
            items.push(...flattenNestedArrays(item));
        }
        else {
            items.push(item);
        }
    }
    return items;
}
/**
 * Applies the source parser and projects its result into a flat array - an array
 * with non-array elements.
 */
function flatten() {
    return map_1.map(x => flattenNestedArrays(x));
}
exports.flatten = flatten;

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