feat: add loader option

Author: sxzz

docs/.vitepress/scripts/docs-generate.sh

@@ -11,7 +11,7 @@ safe_sed() {
 echo "📚 Generating reference..."
 
 # Generate API documentation
-./node_modules/.bin/typedoc --tsconfig tsconfig.json >/dev/null 2>&1
+./node_modules/.bin/typedoc --tsconfig tsconfig.json
 
 echo "✅ Reference generated successfully!"
 
@@ -27,7 +27,7 @@ fi
 # Create the type-aliases folder
 mkdir -p ./docs/reference/type-aliases
 # Move types-aliases/{Sourcemap,Format}.md to ./docs/reference/type-aliases
-mv ./docs/reference/api/type-aliases/{Sourcemap,Format}.md ./docs/reference/type-aliases
+mv ./docs/reference/api/type-aliases/{Sourcemap,Format,ModuleTypes}.md ./docs/reference/type-aliases
 
 # Remove the api folder
 rm -rf ./docs/reference/api

src/index.ts

@@ -201,6 +201,7 @@ async function getBuildOptions(
     report,
     env,
     removeNodeProtocol,
+    loader,
   } = config
 
   const plugins: RolldownPluginOption = []
@@ -279,6 +280,7 @@ async function getBuildOptions(
       inject: {
         ...(shims && !cjsDts && getShimsInject(format, platform)),
       },
+      moduleTypes: loader,
     },
     config.inputOptions,
     [format],

src/options.ts

@@ -43,6 +43,21 @@ const debug = Debug('tsdown:options')
 export type Sourcemap = boolean | 'inline' | 'hidden'
 export type Format = Exclude<ModuleFormat, 'experimental-app'>
 export type NormalizedFormat = Exclude<InternalModuleFormat, 'app'>
+export type ModuleTypes = Record<
+  string,
+  | 'js'
+  | 'jsx'
+  | 'ts'
+  | 'tsx'
+  | 'json'
+  | 'text'
+  | 'base64'
+  | 'dataurl'
+  | 'binary'
+  | 'empty'
+  | 'css'
+  | 'asset'
+>
 
 /**
  * Options for tsdown.
@@ -248,6 +263,17 @@ export interface Options {
    * @default process.cwd()
    */
   cwd?: string
+
+  /**
+   * Sets how input files are processed.
+   * For example, use 'js' to treat files as JavaScript or 'base64' for images.
+   * Lets you import or require files like images or fonts.
+   * @example
+   * ```json
+   * { '.jpg': 'asset', '.png': 'base64' }
+   * ```
+   */
+  loader?: ModuleTypes
 }
 
 /**
@@ -275,6 +301,7 @@ export type ResolvedOptions = Omit<
       | 'hooks'
       | 'removeNodeProtocol'
       | 'copy'
+      | 'loader'
     >,
     {
       format: NormalizedFormat[]