Data Container Utilities

Some utilities for data containers such as Map and Set.

Installation

npm install --save @gmjsdata-container-util

API

Map

mapGetOrThrow

Gets the value from a Map or throws an error if the key is not present.

const map = new Map<string, string>([['foo', 'bar']]);
const value: string = mapGetOrThrow(map, 'foo');
console.log(value);
// 'bar'

const map = new Map<string, string>([['foo', 'bar']]);
// the following line throws an error
const value: string = mapGetOrThrow(map, 'baz');