monocle-ts/lib/At/Record.js

A porting of scala monocle library to TypeScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.atRecord = void 0;
/**
 * @since 1.7.0
 */
var __1 = require("..");
var Option_1 = require("fp-ts/lib/Option");
var R = require("fp-ts/lib/Record");
/**
 * @category constructor
 * @since 1.7.0
 */
function atRecord() {
    return new __1.At(function (k) {
        return new __1.Lens(function (r) { return R.lookup(k, r); }, function (oa) { return function (r) {
            if ((0, Option_1.isNone)(oa)) {
                return R.deleteAt(k)(r);
            }
            else {
                return R.insertAt(k, oa.value)(r);
            }
        }; });
    });
}
exports.atRecord = atRecord;