env-sentinel

Version:

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

22 lines (21 loc) • 681 B

JavaScript

import { isEmptyOrCommentLine } from '../utils.js';
export function noInvalidKeyLeadingCharCheck(lineNumber, lineContent) {
    if (isEmptyOrCommentLine(lineContent)) {
        return;
    }
    const [rawKey] = lineContent.split('=');
    const trimmedKey = rawKey.trim().replace(/^['"]|['"]$/g, '');
    if (trimmedKey === '') {
        return;
    }
    const firstChar = trimmedKey.charAt(0);
    if (!/[A-Za-z_]/.test(firstChar)) {
        return {
            line: lineNumber,
            issue: `Variable name starts with invalid character: "${firstChar}" in "${trimmedKey}"`,
            content: lineContent,
            severity: 'error',
        };
    }
    return;
}