Merge acdee9b into c79b691

mbland · Nov 29, 2023 · c3c12e6 · c3c12e6
2 parents c79b691 + acdee9b
commit c3c12e6
Showing 1 changed file with 44 additions and 34 deletions.
diff --git a/strcalc/src/main/frontend/rollup-plugin-handlebars-precompile.js b/strcalc/src/main/frontend/rollup-plugin-handlebars-precompile.js
@@ -44,46 +44,56 @@ const PLUGIN_ID = `\0${PLUGIN_NAME}`
 const HANDLEBARS_PATH = 'handlebars/lib/handlebars.runtime'
 const IMPORT_HANDLEBARS = `import Handlebars from '${HANDLEBARS_PATH}'`
 
-function helpersModule(helpers) {
-  return [
-    IMPORT_HANDLEBARS,
-    ...helpers.map((h, i) => `import registerHelpers${i} from './${h}'`),
-    ...helpers.map((_, i) => `registerHelpers${i}(Handlebars)`)
-  ].join('\n')
-}
-
-function compiledModule(code, options, helpers) {
-  const compiled = Handlebars.precompile(code, options)
-  let imports = helpers.length ? [`import '${PLUGIN_ID}'`] : []
+class PluginImpl {
+  #options
+  #helpers
+  #isTemplate
 
-  return [
-    IMPORT_HANDLEBARS,
-    ...imports,
-    `export default Handlebars.template(${compiled.toString()})`
-  ].join('\n')
-}
+  constructor(options = {}) {
+    this.#options = options
+    this.#helpers = options.helpers || []
+    this.#isTemplate = createFilter(
+      options.include || DEFAULT_INCLUDE,
+      options.exclude || DEFAULT_EXCLUDE
+    )
+  }
 
-export default function (options = {}) {
-  const isTemplate = createFilter(
-    options.include || DEFAULT_INCLUDE,
-    options.exclude || DEFAULT_EXCLUDE
-  )
-  const helpers = options.helpers || []
-  const shouldEmitHelpersModule = id => id === PLUGIN_ID && helpers.length
+  shouldEmitHelpersModule(id) {
+    return id === PLUGIN_ID && this.#helpers.length
+  }
 
-  return {
-    name: PLUGIN_NAME,
+  helpersModule() {
+    const helpers = this.#helpers
+    return [
+      IMPORT_HANDLEBARS,
+      ...helpers.map((h, i) => `import registerHelpers${i} from './${h}'`),
+      ...helpers.map((_, i) => `registerHelpers${i}(Handlebars)`)
+    ].join('\n')
+  }
 
-    resolveId(id) { if (shouldEmitHelpersModule(id)) return id },
+  isTemplate(id) { return this.#isTemplate(id) }
 
-    load(id) {
-      if (shouldEmitHelpersModule(id)) return helpersModule(helpers)
-    },
+  compiledModule(code) {
+    const precompiled = Handlebars.precompile(code, this.#options)
+    let imports = this.#helpers.length ? [`import '${PLUGIN_ID}'`] : []
 
-    transform(code, id) {
-      if (isTemplate(id)) return {
-        code: compiledModule(code, options, helpers)
-      }
+    return {
+      code: [
+        IMPORT_HANDLEBARS,
+        ...imports,
+        `export default Handlebars.template(${precompiled.toString()})`
+      ].join('\n')
     }
   }
 }
+
+export default function(options) {
+  const p = new PluginImpl(options)
+
+  return {
+    name: PLUGIN_NAME,
+    resolveId(id) { if (p.shouldEmitHelpersModule(id)) return id },
+    load(id) { if (p.shouldEmitHelpersModule(id)) return p.helpersModule() },
+    transform(code, id) { if (p.isTemplate(id)) return p.compiledModule(code) }
+  }
+}