feat: basic preset support

build.config.ts

@@ -2,7 +2,9 @@ import { defineBuildConfig } from './src'
 
 export default defineBuildConfig({
   declaration: true,
-  emitCJS: false,
+  rollup: {
+    emitCJS: false
+  },
   entries: [
     'src/index',
     'src/cli'

src/build.ts

@@ -19,14 +19,20 @@ export async function build (rootDir: string, stub: boolean) {
   rootDir = resolve(process.cwd(), rootDir || '.')
 
   // Read build.config and package.json
-  const _require = jiti(rootDir)
+  const _require = jiti(rootDir, { interopDefault: true })
   let buildConfigFile
   try { buildConfigFile = _require.resolve('./build.config') } catch (e) {}
-  const buildConfig: BuildConfig = buildConfigFile ? _require('./build.config').default : {}
+  const buildConfig: BuildConfig = buildConfigFile ? _require('./build.config') : {}
   const pkg = _require('./package.json')
 
+  // Resolve preset
+  let preset = buildConfig.preset || pkg.unbuild.preset || pkg.build.preset || {}
+  if (typeof preset === 'string') {
+    preset = _require(preset)
+  }
+
   // Merge options
-  const options = defu(buildConfig, pkg.unbuild || pkg.build, <BuildOptions>{
+  const options = defu(buildConfig, pkg.unbuild || pkg.build, preset, <BuildOptions>{
     rootDir,
     entries: [],
     clean: true,
@@ -56,6 +62,9 @@ export async function build (rootDir: string, stub: boolean) {
   if (buildConfig.hooks) {
     ctx.hooks.addHooks(buildConfig.hooks)
   }
+  if (preset.hooks) {
+    ctx.hooks.addHooks(preset.hooks)
+  }
 
   // Normalize entries
   options.entries = options.entries.map(entry =>
@@ -143,8 +152,9 @@ export async function build (rootDir: string, stub: boolean) {
 
   // Validate
   validateDependencies(ctx)
-  consola.log('')
 
   // Call build:done
   await ctx.hooks.callHook('build:done', ctx)
+
+  consola.log('')
 }

src/types.ts

@@ -30,9 +30,9 @@ export interface MkdistBuildEntry extends BaseBuildEntry {
 export type BuildEntry = BaseBuildEntry | RollupBuildEntry | UntypedBuildEntry | MkdistBuildEntry
 
 export interface RollupBuildOptions {
-  emitCJS: boolean
-  cjsBridge: boolean
-  inlineDependencies: boolean
+  emitCJS?: boolean
+  cjsBridge?: boolean
+  inlineDependencies?: boolean
 }
 
 export interface BuildOptions {
@@ -57,7 +57,8 @@ export interface BuildContext {
 }
 
 export interface BuildConfig extends Partial<Omit<BuildOptions, 'entries'>> {
-  entries: (BuildEntry | string)[],
+  entries?: (BuildEntry | string)[]
+  preset?: string | BuildConfig
   hooks?: BuildHooks // eslint-disable-line no-use-before-define
 }
 

test/fixture/build.config.ts

@@ -1,14 +1,9 @@
 import type { BuildConfig } from 'unbuild'
 
 export default <BuildConfig>{
-  cjsBridge: true,
-  declaration: true,
+  preset: './build.preset',
   entries: [
     'src/index',
     { input: 'src/schema', builder: 'untyped' }
-  ],
-  hooks: {
-    'build:before': () => { console.log('Before build') },
-    'build:after': () => { console.log('After build') }
-  }
+  ]
 }

test/fixture/build.preset.ts

@@ -0,0 +1,10 @@
+import type { BuildConfig } from 'unbuild'
+
+export default <BuildConfig>{
+  cjsBridge: true,
+  declaration: true,
+  hooks: {
+    'build:before': () => { console.log('Before build') },
+    'build:done': () => { console.log('After build') }
+  }
+}