HashId plugin for Angular

Currently, I'm attempting to integrate into my Angular project built on the latest version.

After discovering this definition file:

// Type definitions for Hashids.js 1.x
// Project: https://github.com/ivanakimov/hashids.node.js
// Definitions by: Paulo Cesar <https://github.com/pocesar>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

/// <reference types="node" />

export default class Hashids {
    private version: string;
    private minAlphabetLength: number;
    private sepDiv: number;
    private guardDiv: number;
    private errorAlphabetLength: string;
    private errorAlphabetSpace: string;
    private alphabet: string[];
    private seps: string;
    private minHashLength: number;
    private salt: string;
    
    constructor(salt: string, minHashLength?: number, alphabet?: string);
    public decode(hash: string): number[];
    public encode(arg: number): string;
    public encode(arg: number[]): string;
    public encode(...args: number[]): string;
    public encodeHex(str: string): string;
    public decodeHex(hash: string): string;
    public hash(input: number, alphabet: string): string;
    public unhash(input: string[], alphabet: string): number;
} 

When trying to implement it in my Angular project using the following code snippet:

import * as Hashids from 'hashids';
export abstract class BaseService {
     protected getId(id: any) {
            const x = new Hashids('somesecretec');
            return x.encode(id);
     }
}

An error message is displayed:

Error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.

While testing locally, everything works fine. However, when I attempted to compile in a production environment, the issue arose.

Answer №1

The problem lies in the method of importing Hashids, ensure you import hashids as default using the following option:

import Hashids from 'hashids';

If you prefer to use * or {} for named imports, be aware that importing Hashids as a named import other than 'default' will result in the error message shown below:

error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.

To avoid this issue, stick to importing Hashids with the default name, as the default export is essentially a named export with the name 'default':

import {default as Hashids} from "hashids";

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