feat: add meta attribute for html tags

BREAKING CHANGE: Plugins adding additional assetTags should provide a meta attribute

Author: jantimon

index.js

@@ -717,6 +717,7 @@ function hookIntoCompiler (compiler, options, plugin) {
  return jsAssets.map(scriptAsset => ({
  tagName: 'script',
  voidTag: false,
+ meta: { plugin: 'html-webpack-plugin' },
  attributes: {
  defer: options.scriptLoading !== 'blocking',
  src: scriptAsset
@@ -733,6 +734,7 @@ function hookIntoCompiler (compiler, options, plugin) {
  return cssAssets.map(styleAsset => ({
  tagName: 'link',
  voidTag: true,
+ meta: { plugin: 'html-webpack-plugin' },
  attributes: {
  href: styleAsset,
  rel: 'stylesheet'
@@ -755,6 +757,7 @@ function hookIntoCompiler (compiler, options, plugin) {
  return [{
  tagName: 'base',
  voidTag: true,
+ meta: { plugin: 'html-webpack-plugin' },
  attributes: (typeof baseOption === 'string') ? {
  href: baseOption
  } : baseOption
@@ -797,6 +800,7 @@ function hookIntoCompiler (compiler, options, plugin) {
  return {
  tagName: 'meta',
  voidTag: true,
+ meta: { plugin: 'html-webpack-plugin' },
  attributes: metaTagAttributes
  };
  });
@@ -814,6 +818,7 @@ function hookIntoCompiler (compiler, options, plugin) {
  return [{
  tagName: 'link',
  voidTag: true,
+ meta: { plugin: 'html-webpack-plugin' },
  attributes: {
  rel: 'icon',
  href: faviconPath

lib/html-tags.js

@@ -54,13 +54,17 @@ function htmlTagObjectToString (tagDefinition, xhtml) {
  *
  * @param {string} [innerHTML]
  *
+ * @param {{[attributeName: string]: string|boolean}} [meta]
+ * meta information about the tag e.g. `{ 'pluhin': 'html-webpack-plugin' }`
+ *
  * @returns {HtmlTagObject}
  */
-function createHtmlTagObject (tagName, attributes, innerHTML) {
+function createHtmlTagObject (tagName, attributes, innerHTML, meta) {
  return {
  tagName: tagName,
  voidTag: voidTags.indexOf(tagName) !== -1,
  attributes: attributes || {},
+ meta: meta || {},
  innerHTML: innerHTML
  };
 }

typings.d.ts

@@ -278,5 +278,13 @@ declare namespace HtmlWebpackPlugin {
  * @see https://www.w3.org/TR/html5/syntax.html#void-elements
  */
  voidTag: boolean;
+ /**
+ * Meta information about the tag
+ * E.g. `{'plugin': 'html-webpack-plugin'}`
+ */
+ meta: {
+ plugin?: string,
+ [metaAttributeName: string]: any;
+ };
  }
 }