env-sentinel/dist/generators/generate-schema-from-env.js

Zero-dependency tool that auto-validates .env files against schema.env, with optional fallback and secure warnings.

import { existsSync, readFileSync } from 'node:fs';
import { inferType } from './infer-type.js';
import { parseEnvContent } from '../parsers/parse-env-content.js';
export function generateSchemaFromEnv(envPath) {
    if (!existsSync(envPath)) {
        throw new Error(`File not found: ${envPath}`);
    }
    const raw = readFileSync(envPath, 'utf-8');
    const env = parseEnvContent(raw);
    const schemaEntries = Object.entries(env).map(([key, value]) => {
        const type = inferType(value);
        const rule = type ? `required|${type}` : 'required';
        return { key, rule };
    });
    return (`# Generated from ${envPath}\n` +
        schemaEntries.map((entry) => `${entry.key}=${entry.rule}`).join('\n') +
        '\n');
}