The-DevOps-Daily/terraform-provider-validatefx

Add ISSN validator

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#451 opened on Nov 24, 2025

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enhancementgood first issuehacktoberfest

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Description

Implement a validator for ISSN (International Standard Serial Number).

Features:

  • Validate 8-digit ISSN format
  • Check the check digit
  • Support hyphenated format (XXXX-XXXX)
  • Include examples for journal/periodical metadata

Contributor guide

Research direction
Inspect existing validator implementations in the codebase to understand the pattern, then implement the ISSN validator following the same pattern. Ensure to handle hyphenated format and check digit calculation.
Tech stack
go
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Go
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75