fix(dts): only remove unused dts on build

Author: antfu

src/core/context.ts

@@ -252,7 +252,7 @@ export class Context {
       return
 
     debug.decleration('generating')
-    generateDeclaration(this, this.options.root, this.options.dts)
+    generateDeclaration(this, this.options.root, this.options.dts, !this._server)
   }
 
   get componentNameMap() {

src/core/declaration.ts

@@ -10,7 +10,7 @@ export function parseDeclaration(code: string): Record<string, string> {
   return Object.fromEntries(Array.from(code.matchAll(/(?<!\/\/)\s+\s+['"]?(.+?)['"]?:\s(.+?)\n/g)).map(i => [i[1], i[2]]))
 }
 
-export async function generateDeclaration(ctx: Context, root: string, filepath: string) {
+export async function generateDeclaration(ctx: Context, root: string, filepath: string, removeUnused = false): Promise<void> {
   const imports: Record<string, string> = Object.fromEntries(
     Object.values({
       ...ctx.componentNameMap,
@@ -46,7 +46,7 @@ export async function generateDeclaration(ctx: Context, root: string, filepath:
     ...imports,
   })
     .sort((a, b) => a[0].localeCompare(b[0]))
-    .filter(([name]) => ctx.componentCustomMap[name] || ctx.componentNameMap[name])
+    .filter(([name]) => removeUnused ? ctx.componentCustomMap[name] || ctx.componentNameMap[name] : true)
     .map(([name, v]) => {
       if (!/^\w+$/.test(name))
         name = `'${name}'`