feat!: defaults fixedExtension to true when platform is node (#517)

Author: sxzz

src/config/index.ts

@@ -210,6 +210,7 @@ async function resolveUserConfig(
     cjsDefault = true,
     globImport = true,
     inlineOnly,
+    fixedExtension = platform === 'node',
   } = userConfig
 
   const logger = createLogger(logLevel, { customLogger, failOnWarn })
@@ -343,6 +344,7 @@ async function resolveUserConfig(
     cjsDefault,
     globImport,
     inlineOnly,
+    fixedExtension,
   }
 
   return config

src/config/types.ts

@@ -287,7 +287,8 @@ export interface UserConfig {
    * Use a fixed extension for output files.
    * The extension will always be `.cjs` or `.mjs`.
    * Otherwise, it will depend on the package type.
-   * @default false
+   *
+   * Defaults to `true` if `platform` is set to `node`, `false` otherwise.
    */
   fixedExtension?: boolean
 
@@ -504,7 +505,6 @@ export type ResolvedConfig = Overwrite<
     | 'alias'
     | 'external'
     | 'onSuccess'
-    | 'fixedExtension'
     | 'outExtensions'
     | 'hooks'
     | 'copy'

tests/__snapshots__/banner-and-footer-option.snap.md

@@ -1,14 +1,14 @@
-## index.d.ts
+## index.d.mts
 
-```ts
+```mts
 // dts banner
 export { };
 // dts footer
 ```
 
-## index.js
+## index.mjs
 
-```js
+```mjs
 // js banner
 //#region index.ts
 console.log("Hello, world!");

tests/__snapshots__/basic.snap.md

@@ -1,6 +1,6 @@
-## index.js
+## index.mjs
 
-```js
+```mjs
 //#region index.ts
 console.log("Hello, world!");
 

tests/__snapshots__/bundle-dts.snap.md

@@ -1,6 +1,6 @@
-## index.d.ts
+## index.d.mts
 
-```ts
+```mts
 //#region src/utils/types.d.ts
 declare let str: string;
 //#endregion
@@ -10,9 +10,9 @@ declare let shared: number;
 export { shared, str };
 ```
 
-## index.js
+## index.mjs
 
-```js
+```mjs
 //#region src/utils/types.ts
 let str = "hello";
 

tests/__snapshots__/cjs-default.snap.md

@@ -19,18 +19,18 @@ declare function hello(): void;
 export = hello;
 ```
 
-## index.d.ts
+## index.d.mts
 
-```ts
+```mts
 //#region index.d.ts
 declare function hello(): void;
 //#endregion
 export { hello as default };
 ```
 
-## index.js
+## index.mjs
 
-```js
+```mjs
 //#region index.ts
 function hello() {
 	console.log("Hello!");

tests/__snapshots__/clean/should-clean-custom-directories.snap.md

@@ -1,6 +1,6 @@
-## index.js
+## index.mjs
 
-```js
+```mjs
 //#region index.ts
 const hello = "world";
 

tests/__snapshots__/clean/should-clean-dist-directory-by-default.snap.md

@@ -1,6 +1,6 @@
-## index.js
+## index.mjs
 
-```js
+```mjs
 //#region index.ts
 const hello = "world";
 

tests/__snapshots__/clean/should-clean-files-with-specific-extensions.snap.md

@@ -1,6 +1,6 @@
-## index.js
+## index.mjs
 
-```js
+```mjs
 //#region index.ts
 const hello = "world";
 

tests/__snapshots__/clean/should-clean-multiple-patterns.snap.md

@@ -1,6 +1,6 @@
-## index.js
+## index.mjs
 
-```js
+```mjs
 //#region index.ts
 const hello = "world";