FieldTest Core

FieldTest is a framework-agnostic TypeScript validation toolkit for Markdown and Standard Schema. It helps you catch content errors at build time, with strong TypeScript support and clear diagnostics.

Install

npm install @fieldtest/core
# or
pnpm add @fieldtest/core

Quick Example

import { loadUserSchema, parseMarkdown, validateWithSchema, z } from "@fieldtest/core";

const blogSchema = z.object({
  title: z.string(),
  date: z.string(),
  tags: z.array(z.string()).optional(),
});

const schema = loadUserSchema(blogSchema);
const doc = parseMarkdown(`---\ntitle: Hello\ndate: 2025-01-01\n---\nContent`);
const result = await validateWithSchema(schema, doc.frontmatter, { throwOnError: true });

Features

• Markdown + frontmatter parsing
• Standard Schema compatibility
• Zod-based schema authoring
• Helpful error formatting
• Fast validation for large content sets

Documentation

https://docs.matthewhendricks.net/fieldtest/

License

MIT