@bernierllc/email-template-engine/dist/validation.js

Email template processing engine with compilation, rendering, and text generation

"use strict";
/*
Copyright (c) 2025 Bernier LLC

This file is licensed to the client under a limited-use license.
The client may use and modify this code *only within the scope of the project it was delivered for*.
Redistribution or use in other products or commercial offerings is not permitted without written consent from Bernier LLC.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.checkBalancedBraces = checkBalancedBraces;
exports.checkUnclosedBlocks = checkUnclosedBlocks;
exports.isBuiltInHelper = isBuiltInHelper;
exports.inferVariableType = inferVariableType;
/**
 * Check if template has balanced braces
 */
function checkBalancedBraces(template) {
    let count = 0;
    for (let i = 0; i < template.length; i++) {
        if (template[i] === '{' && template[i + 1] === '{') {
            count++;
            i++; // Skip next brace
        }
        else if (template[i] === '}' && template[i + 1] === '}') {
            count--;
            i++; // Skip next brace
            if (count < 0) {
                return { balanced: false, position: i };
            }
        }
    }
    return { balanced: count === 0, position: count !== 0 ? template.length : undefined };
}
/**
 * Check for unclosed block helpers
 */
function checkUnclosedBlocks(template) {
    const unclosed = [];
    const blockStack = [];
    const blockRegex = /\{\{#(\w+).*?\}\}|\{\{\/(\w+)\}\}/g;
    let match;
    while ((match = blockRegex.exec(template)) !== null) {
        if (match[1]) {
            // Opening block
            blockStack.push(match[1]);
        }
        else if (match[2]) {
            // Closing block
            const last = blockStack.pop();
            if (last !== match[2]) {
                unclosed.push(match[2]);
            }
        }
    }
    // Any remaining blocks are unclosed
    return [...unclosed, ...blockStack];
}
/**
 * Check if a variable name is a built-in Handlebars helper
 */
function isBuiltInHelper(variable) {
    const builtIns = ['if', 'unless', 'each', 'with', 'log', 'lookup', 'else'];
    const firstWord = variable.split(/[\s.]/)[0];
    return builtIns.includes(firstWord);
}
/**
 * Infer variable type from path
 */
function inferVariableType(path) {
    // Simple heuristic based on variable name
    if (path.includes('.length') || path.includes('.count'))
        return 'number';
    if (path.includes('.is') || path.includes('.has'))
        return 'boolean';
    if (path.includes('.items') || path.includes('.list'))
        return 'array';
    if (path.includes('.'))
        return 'object';
    return 'string';
}