Fix MJML import path error in lambda bundle

Author: webstackdev

README.md

@@ -2,7 +2,10 @@ import { Buffer } from 'node:buffer'
 import { ActionsFunctionError } from '@actions/utils/errors'
 import acknowledgementTemplateContent from '@actions/contact/email/acknowledgement.mjml?raw'
 import messageTemplateContent from '@actions/contact/email/message.mjml?raw'
-import { compileEmailTemplate, createEmailTemplate } from '@actions/utils/email/templateCompiler'
+import {
+  compileEmailTemplate,
+  createImportedEmailTemplate,
+} from '@actions/utils/email/templateCompiler'
 import { escapeHtml, formatFileSize } from './utils'
 import type { ContactFormData, ContactTimeline, FileAttachment } from '@actions/contact/@types'
 
@@ -61,13 +64,13 @@ const readInputBoolean = (input: Record<string, unknown>, key: string): boolean
   return false
 }
 
-const contactMessageTemplate = createEmailTemplate(
-  new URL('./email/message.mjml', import.meta.url),
+const contactMessageTemplate = createImportedEmailTemplate(
+  'src/actions/contact/email/message.mjml',
   messageTemplateContent
 )
 
-const contactAcknowledgementTemplate = createEmailTemplate(
-  new URL('./email/acknowledgement.mjml', import.meta.url),
+const contactAcknowledgementTemplate = createImportedEmailTemplate(
+  'src/actions/contact/email/acknowledgement.mjml',
   acknowledgementTemplateContent
 )
 

src/actions/contact/responder.ts

@@ -1,14 +1,17 @@
 import { Resend } from 'resend'
 import verificationTemplateContent from '@actions/gdpr/email/verification.mjml?raw'
 import { dsarVerificationEmailText } from '@actions/gdpr/email/dsarText'
-import { compileEmailTemplate, createEmailTemplate } from '@actions/utils/email/templateCompiler'
+import {
+  compileEmailTemplate,
+  createImportedEmailTemplate,
+} from '@actions/utils/email/templateCompiler'
 import { getResendApiKey, isProd } from '@actions/utils/environment/environmentActions'
 import { gdprReplyTo, gdprSender } from '@actions/utils/email/resendSenders'
 import { getSiteUrl } from '@actions/utils/environment/siteUrlActions'
 import { ActionsFunctionError } from '@actions/utils/errors/ActionsFunctionError'
 
-const verificationTemplate = createEmailTemplate(
-  new URL('../email/verification.mjml', import.meta.url),
+const verificationTemplate = createImportedEmailTemplate(
+  'src/actions/gdpr/email/verification.mjml',
   verificationTemplateContent
 )
 

src/actions/gdpr/entities/email.ts

@@ -1,8 +1,8 @@
 import confirmationTemplateContent from './confirmation.mjml?raw'
-import { compileEmailTemplate, createEmailTemplate } from '@actions/utils/email/templateCompiler'
+import { compileEmailTemplate, createImportedEmailTemplate } from '@actions/utils/email/templateCompiler'
 
-const confirmationTemplate = createEmailTemplate(
-  new URL('./confirmation.mjml', import.meta.url),
+const confirmationTemplate = createImportedEmailTemplate(
+  'src/actions/newsletter/email/confirmation.mjml',
   confirmationTemplateContent
 )
 

src/actions/newsletter/email/confirmationHtml.ts

@@ -1,8 +1,8 @@
 import welcomeTemplateContent from './welcome.mjml?raw'
-import { compileEmailTemplate, createEmailTemplate } from '@actions/utils/email/templateCompiler'
+import { compileEmailTemplate, createImportedEmailTemplate } from '@actions/utils/email/templateCompiler'
 
-const welcomeTemplate = createEmailTemplate(
-  new URL('./welcome.mjml', import.meta.url),
+const welcomeTemplate = createImportedEmailTemplate(
+  'src/actions/newsletter/email/welcome.mjml',
   welcomeTemplateContent
 )
 

src/actions/newsletter/email/welcomeHtml.ts

@@ -6,7 +6,11 @@ import contactMessageTemplateContent from '../../../contact/email/message.mjml?r
 import exampleTemplateContent from '../__fixtures__/example.mjml?raw'
 import invalidTemplateContent from '../__fixtures__/invalid.mjml?raw'
 import withCommonDataTemplateContent from '../__fixtures__/with-common-data.mjml?raw'
-import { compileEmailTemplate, createEmailTemplate } from '../templateCompiler'
+import {
+  compileEmailTemplate,
+  createEmailTemplate,
+  createImportedEmailTemplate,
+} from '../templateCompiler'
 
 const exampleTemplate = createEmailTemplate(
   new URL('../__fixtures__/example.mjml', import.meta.url),
@@ -28,6 +32,11 @@ const withCommonDataTemplate = createEmailTemplate(
   withCommonDataTemplateContent
 )
 
+const importedExampleTemplate = createImportedEmailTemplate(
+  'src/actions/utils/email/__fixtures__/example.mjml',
+  exampleTemplateContent
+)
+
 describe('compileEmailTemplate', () => {
   it('compiles the moved contact message template from its imported source', async () => {
     const result = await compileEmailTemplate(contactMessageTemplate, {
@@ -90,6 +99,18 @@ describe('compileEmailTemplate', () => {
     expect(result.text).toContain('Contact Webstack Builders at support@webstackbuilders.com.')
   })
 
+  it('compiles imported template content from a stable source path', async () => {
+    const result = await compileEmailTemplate(importedExampleTemplate, {
+      htmlMessage: '<strong>Urgent</strong> message body',
+      items: ['Coffee Beans'],
+      name: 'Alex',
+    })
+
+    expect(result.html).toContain('Hello, Alex!')
+    expect(result.html).toContain('Coffee Beans')
+    expect(result.text).toContain('Urgent message body')
+  })
+
   it('throws ActionsFunctionError when MJML compilation reports errors', async () => {
     await expect(compileEmailTemplate(invalidTemplate)).rejects.toMatchObject({
       appCode: 'EMAIL_TEMPLATE_COMPILE_FAILED',

src/actions/utils/email/__tests__/templateCompiler.spec.ts

@@ -230,7 +230,10 @@ const createPlainText = (html: string): string =>
 /**
  * Creates a bundle-safe template descriptor from imported MJML source.
  */
-export const createImportedEmailTemplate = createEmailTemplate
+export const createImportedEmailTemplate = (
+  sourcePath: string,
+  content: string
+): EmailTemplateSource => createEmailTemplate(sourcePath, content)
 
 /**
  * Renders imported MJML source with Nunjucks data and returns HTML plus plain text.