From a23d06317925c0ccd9a77227590ce18cec44195a Mon Sep 17 00:00:00 2001
From: hedada <58533654+biggerstar@users.noreply.github.com>
Date: Fri, 4 Aug 2023 18:54:39 +0800
Subject: [PATCH] feat: support emit declaration files only (#253)

* feat: support only output dts

* chore: update api docs

---------

Co-authored-by: qmhc <40221744+qmhc@users.noreply.github.com>
---
 README.md                  | 9 +++++++++
 README.zh-CN.md            | 9 +++++++++
 examples/ts/vite.config.ts | 3 ++-
 src/plugin.ts              | 8 ++++++++
 src/types.ts               | 9 +++++++++
 5 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 91fe626..08371f5 100644
--- a/README.md
+++ b/README.md
@@ -286,6 +286,15 @@ export interface PluginOptions {
    */
   copyDtsFiles?: boolean,
 
+  /**
+   * Whether to emit declaration files only
+   *
+   * When `true`, all the original outputs of vite (rollup) will be force removed
+   *
+   * @default false
+   */
+  declarationOnly?: boolean,
+
   /**
    * Logging level for this plugin
    *
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 914569a..c5b595b 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -286,6 +286,15 @@ export interface PluginOptions {
    */
   copyDtsFiles?: boolean,
 
+  /**
+   * 是否只生成类型文件
+   *
+   * 当为 `true` 时会强制删除所有 Vite（Rollup）的原始产物
+   *
+   * @default false
+   */
+  declarationOnly?: boolean,
+
   /**
    * 指定插件的输出等级
    *
diff --git a/examples/ts/vite.config.ts b/examples/ts/vite.config.ts
index 2d31809..0121229 100644
--- a/examples/ts/vite.config.ts
+++ b/examples/ts/vite.config.ts
@@ -27,7 +27,8 @@ export default defineConfig({
       // aliasesExclude: [/^@components/],
       staticImport: true,
       // insertTypesEntry: true,
-      rollupTypes: true
+      rollupTypes: true,
+      declarationOnly: true
     })
   ]
 })
diff --git a/src/plugin.ts b/src/plugin.ts
index 4905319..5b223b1 100644
--- a/src/plugin.ts
+++ b/src/plugin.ts
@@ -76,6 +76,7 @@ export function dtsPlugin(options: PluginOptions = {}): import('vite').Plugin {
     pathsToAliases = true,
     aliasesExclude = [],
     copyDtsFiles = false,
+    declarationOnly = false,
     strictOutput = true,
     afterDiagnostic = noop,
     beforeWriteFile = noop,
@@ -691,6 +692,13 @@ export function dtsPlugin(options: PluginOptions = {}): import('vite').Plugin {
       logger.info(
         green(`${logPrefix} Declaration files built in ${timeRecord + Date.now() - startTime}ms.\n`)
       )
+    },
+    generateBundle(_, bundle) {
+      if (declarationOnly) {
+        for (const id of Object.keys(bundle)) {
+          delete bundle[id]
+        }
+      }
     }
   }
 }
diff --git a/src/types.ts b/src/types.ts
index 4789302..6c72570 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -192,6 +192,15 @@ export interface PluginOptions {
    */
   copyDtsFiles?: boolean,
 
+  /**
+   * Whether to emit declaration files only
+   *
+   * When `true`, all the original outputs of vite (rollup) will be force removed
+   *
+   * @default false
+   */
+  declarationOnly?: boolean,
+
   /**
    * Logging level for this plugin
    *