How to calculate Clearbit API webhook X-Request-Signature in Node.js / JavaScript / TypeScript

clearbit-signature-validation.ts

import * as crypto from 'crypto';

export class ClearbitSignatureValidation {
  static getSignature(raw_body: string, signature: string): string {
    const signature_without_prefix = signature.replace(/^(sk\_)/, '');

    return (
      'sha1=' +
      crypto
        .createHmac('sha1', signature_without_prefix)
        .update(raw_body)
        .digest('hex')
    );
  }
}