Feature/replace html minifier with htmlnano

MIGRATION_GUIDES/FROM_1.3.X_TO_1.4.md

@@ -0,0 +1,36 @@
+## Migration Guide from 1.3.x to 1.4.0
+
+## Breaking Changes
+- `html-minifier` has been removed from the dependencies and it's now replaced by `htmlnano` (as a peer dependency) (reported by #268).
+- The `minifyHtmlOutput` is now `false` by default, since `htmlnano` require a bit more configuration to work properly.
+- The `htmlMinifierOptions` as been rename to `templateMinifierOptions` and it's now an object with the following properties:
+  - `options`: (optional) Wich is the options object passed to `htmlnano`.
+  - `preset`: (optional) Which is the preset used by `htmlnano`.
+
+## How to migrate
+
+### 1. Update the `nodemailer-mjml` version
+
+```bash
+npm install nodemailer-mjml@latest
+or
+yarn add nodemailer-mjml@latest
+```
+### 2. If you where using minifyHtmlOutput, you will need to enable it explicitly in the options
+
+### 3. Install `htmlnano` dependency (as a dev dependency)
+
+```bash
+npm install --save-dev htmlnano
+or
+yarn add -D htmlnano
+```
+> [!NOTE]
+> If you want `html` minification, you will need to also install `posthtml` <br>
+> If you want `html` minification, you will need to also install `postcss` and `cssnano` <br>
+> If you want `js` minification, you will need to also install `terser` <br>
+> If you want `svg` minification, you will need to also install `svgo`
+
+More information about the `htmlnano` options can be found [here](https://htmlnano.netlify.app/).
+‡
+### 4. Update the plugin options by removing `htmlMinifierOptions` and adding `templateMinifierOptions` with your desired options

README.md

@@ -1,3 +1,5 @@
+> [!WARNING]  
+>Migration guide from 1.3.x to 1.4.0 can be found [here](./MIGRATION_GUIDES/FROM_1.3.X_TO_1.4.md)
 
 <h1 align="center">
   <br>
@@ -151,10 +153,8 @@ sendTemplatedEmail();
 | templateFolder          | string             | Path of the dir containing your **MJML** template                                                                                                                                     | undefined                   |
 | templatePartialsFolder? | string             | Path relative to **templateFolder**, if defined when using a template layout it will be folder where **nodemailer-mjml** while try to find fallback slots if one or more is undefined | undefined                   |
 | mjmlOptions?            | MJMLParsingOptions | Options that would be passed to **MJML** compiler (see more) [mjml doc](https://github.com/mjmlio/mjml)                                                                               | {validationLevel: "strict"} |
-| minifyHtmlOutput?       | boolean            | use to enable/disable html minification using **html-minifier**                                                                                                                       | true                        |
-| htmlMinifierOptions?    | Options            | Options that would be passed to **html-minifier** (see more) [html-minifier doc](https://github.com/kangax/html-minifier)                                                             | undefined                   |
-
-### Send mail options
+| minifyHtmlOutput?       | boolean            | use to enable/disable html minification using **htmlnano**, if enabled make sure to install **htmlnano** as a devdependencies                                                                                                                       | false                        |
+| htmlMinifierOptions?    | {options?: HtmlnanoOptions; preset?: HtmlnanoPreset}            | Options that would be passed to **htmlnano** (see more) [htmlnano doc](https://htmlnano.netlify.app/)                                                             | undefined                   |
 
 > **nodemailer-mjml** bring 4 new params to the `sendMail` function
 

__tests__/unit/template_render.spec.ts

@@ -20,6 +20,15 @@ describe("Template render", () => {
                 const buildedTemplate = await buildMjmlTemplate({
                     templateFolder: join(__dirname, "../resources"),
                     minifyHtmlOutput: true,
+                    templateMinifierOptions: {
+                        options: {
+                            removeComments: false,
+                            collapseWhitespace: "all",
+                            minifyCss: true,
+                            minifyJs: false,
+                            minifySvg: false,
+                        },
+                    }
                 }, {
                     templateName: "test",
                 });
@@ -58,6 +67,15 @@ describe("Template render", () => {
                 const buildedTemplate = await buildMjmlTemplate({
                     templateFolder: join(__dirname, "../resources"),
                     minifyHtmlOutput: true,
+                    templateMinifierOptions: {
+                        options: {
+                            removeComments: false,
+                            collapseWhitespace: "all",
+                            minifyCss: true,
+                            minifyJs: false,
+                            minifySvg: false,
+                        },
+                    }
                 }, {
                     templateName: "test-mustache",
                     templateData
@@ -87,7 +105,16 @@ describe("Template render", () => {
                     const buildedTemplate = await buildMjmlTemplate({
                         templateFolder: join(__dirname, "../resources"),
                         templatePartialsFolder: "/include",
-                        minifyHtmlOutput: true
+                        minifyHtmlOutput: true,
+                        templateMinifierOptions: {
+                            options: {
+                                removeComments: false,
+                                collapseWhitespace: "all",
+                                minifyCss: true,
+                                minifyJs: false,
+                                minifySvg: false,
+                            },
+                        }
                     }, {
                         templateLayoutName: "layout/layout-single-slot"
                     });
@@ -111,7 +138,16 @@ describe("Template render", () => {
                 it("should send an email with a layout and fallback header with html minification and snapshot should match", async () => {
                     const buildedTemplate = await buildMjmlTemplate({
                         templateFolder: join(__dirname, "../resources"),
-                        minifyHtmlOutput: true
+                        minifyHtmlOutput: true,
+                        templateMinifierOptions: {
+                            options: {
+                                removeComments: false,
+                                collapseWhitespace: "all",
+                                minifyCss: true,
+                                minifyJs: false,
+                                minifySvg: false,
+                            },
+                        }
                     }, {
                         templateLayoutName: "layout/layout-single-slot"
                     });
@@ -163,7 +199,16 @@ describe("Template render", () => {
                     const buildedTemplate = await buildMjmlTemplate({
                         templateFolder: join(__dirname, "../resources"),
                         templatePartialsFolder: "/include",
-                        minifyHtmlOutput: true
+                        minifyHtmlOutput: true,
+                        templateMinifierOptions: {
+                            options: {
+                                removeComments: false,
+                                collapseWhitespace: "all",
+                                minifyCss: true,
+                                minifyJs: false,
+                                minifySvg: false,
+                            },
+                        }
                     }, {
                         templateLayoutName: "layout/layout-single-slot",
                         templateLayoutSlots,
@@ -215,7 +260,16 @@ describe("Template render", () => {
 
                     const buildedTemplate = await buildMjmlTemplate({
                         templateFolder: join(__dirname, "../resources"),
-                        minifyHtmlOutput: true
+                        minifyHtmlOutput: true,
+                        templateMinifierOptions: {
+                            options: {
+                                removeComments: false,
+                                collapseWhitespace: "all",
+                                minifyCss: true,
+                                minifyJs: false,
+                                minifySvg: false,
+                            },
+                        }
                     }, {
                         templateLayoutName: "layout/layout-single-slot",
                         templateLayoutSlots,