Hello {{name}}!
',\n { name: 'John' }\n);\n\nconsole.log(result.data); // 'Hello John!
'\n```\n\n### Building Complete Email Templates\n\n```typescript\nimport { buildEmailTemplate } from '@bernierllc/email-template-engine';\n\nconst result = await buildEmailTemplate(\n {\n headerHtml: '{{message}}
',\n {\n title: 'Welcome',\n message: 'Thank you for joining!',\n }\n);\n\nconsole.log(result.data?.html); // Complete HTML email\nconsole.log(result.data?.text); // Plain text version\n```\n\n### Variable Extraction\n\n```typescript\nimport { extractTemplateVariables } from '@bernierllc/email-template-engine';\n\nconst template = '{{user.name}}
';\nconst result = extractTemplateVariables(template);\n\nconsole.log(result.data);\n// [\n// { name: 'title', path: 'title', type: 'string', occurrenceCount: 1, ... },\n// { name: 'user', path: 'user.name', type: 'object', occurrenceCount: 1, ... }\n// ]\n```\n\n### Template Validation\n\n```typescript\nimport { validateEmailTemplate } from '@bernierllc/email-template-engine';\n\nconst result = validateEmailTemplate('{{name}}
');\n\nif (!result.data?.isValid) {\n console.error('Validation errors:', result.data?.errors);\n}\n```\n\n### HTML to Text Conversion\n\n```typescript\nimport { generateTextFromHtml } from '@bernierllc/email-template-engine';\n\nconst result = generateTextFromHtml(\n 'Check out our website
'\n);\n\nconsole.log(result.data);\n// WELCOME\n//\n// Check out our website [https://example.com]\n```\n\n## API Reference\n\n### EmailTemplateEngine\n\nMain class for template processing.\n\n#### Methods\n\n##### `compile(template: string, options?: CompilationOptions): TemplateResult{{uppercase name}}
',\n { name: 'john' }\n);\n//JOHN
\n```\n\n## Custom Helpers\n\nAdd your own Handlebars helpers:\n\n```typescript\nconst engine = new EmailTemplateEngine();\n\nconst result = engine.render(\n 'Price: {{currency amount}}
',\n { amount: 99.5 },\n {\n helpers: {\n currency: (value: number) => `$${value.toFixed(2)}`,\n },\n }\n);\n//Price: $99.50
\n```\n\n## Error Handling\n\nAll methods return a `TemplateResultHi {{userName}},
\nYour account email: {{email}}
\n Verify Account\n`;\n\nconst result = await engine.buildCompleteTemplate(\n {\n headerHtml: '',\n footerHtml: '',\n },\n welcomeTemplate,\n {\n companyName: 'ACME Corp',\n userName: 'John Doe',\n email: 'john@example.com',\n verificationLink: 'https://example.com/verify/abc123',\n }\n);\n```\n\n### Order Confirmation\n\n```typescript\nconst orderTemplate = `\nOrder #{{orderNumber}}
\nTotal: ${{total}}
\n