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node_modules/html-webpack-plugin/lib/loader.js

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+/* This loader renders the template with underscore if no other loader was found */
+// @ts-nocheck
+'use strict';
+const _ = require('lodash');
+
+module.exports = function (source) {
+  // Get templating options
+  const options = this.getOptions();
+  const force = options.force || false;
+
+  const allLoadersButThisOne = this.loaders.filter((loader) => loader.normal !== module.exports);
+
+  // This loader shouldn't kick in if there is any other loader (unless it's explicitly enforced)
+  if (allLoadersButThisOne.length > 0 && !force) {
+    return source;
+  }
+
+  // Allow only one html-webpack-plugin loader to allow loader options in the webpack config
+  const htmlWebpackPluginLoaders = this.loaders.filter((loader) => loader.normal === module.exports);
+  const lastHtmlWebpackPluginLoader = htmlWebpackPluginLoaders[htmlWebpackPluginLoaders.length - 1];
+  if (this.loaders[this.loaderIndex] !== lastHtmlWebpackPluginLoader) {
+    return source;
+  }
+
+  // Skip .js files (unless it's explicitly enforced)
+  if (/\.(c|m)?js$/.test(this.resourcePath) && !force) {
+    return source;
+  }
+
+  // The following part renders the template with lodash as a minimalistic loader
+  //
+  const template = _.template(source, { interpolate: /<%=([\s\S]+?)%>/g, variable: 'data', ...options });
+  // Use `eval("require")("lodash")` to enforce using the native nodejs require
+  // during template execution
+  return 'var _ = eval("require")(' + JSON.stringify(require.resolve('lodash')) + ');' +
+    'module.exports = function (templateParams) { with(templateParams) {' +
+      // Execute the lodash template
+      'return (' + template.source + ')();' +
+    '}}';
+};