diff --git a/build.config.ts b/build.config.ts
index 9f691e7d..d3af402e 100644
--- a/build.config.ts
+++ b/build.config.ts
@@ -6,6 +6,7 @@ export default <BuildConfig> {
     'src/cli'
   ],
   dependencies: [
-    'esbuild'
+    'esbuild',
+    'typescript'
   ]
 }
diff --git a/src/build.ts b/src/build.ts
index cc6a4367..4acdd997 100644
--- a/src/build.ts
+++ b/src/build.ts
@@ -37,6 +37,7 @@ export async function build (rootDir: string, stub: boolean) {
     outDir: 'dist',
     genDir: '.gen',
     untyped: undefined,
+    declaration: undefined,
     clean: true,
     stub,
     buildEntries: [],
@@ -57,6 +58,9 @@ export async function build (rootDir: string, stub: boolean) {
     if (!entry.builder) {
       entry.builder = entry.input.endsWith('/') ? 'mkdist' : 'rollup'
     }
+    if (ctx.declaration !== undefined && entry.declaration === undefined) {
+      entry.declaration = ctx.declaration
+    }
   }
 
   // Add dependencies from package.json as externals
diff --git a/src/builder/mkdist.ts b/src/builder/mkdist.ts
index dd78b1c3..d85b6522 100644
--- a/src/builder/mkdist.ts
+++ b/src/builder/mkdist.ts
@@ -16,7 +16,7 @@ export async function mkdistBuild (ctx: BuildContext) {
         distDir: join(ctx.outDir, entry.name),
         format: entry.format,
         cleanDist: false,
-        declaration: true
+        declaration: entry.declaration
       })
       ctx.buildEntries.push({
         path: join(ctx.outDir, entry.name),
diff --git a/src/builder/rollup.ts b/src/builder/rollup.ts
index 3cdd681c..fe4eb478 100644
--- a/src/builder/rollup.ts
+++ b/src/builder/rollup.ts
@@ -45,15 +45,17 @@ export async function rollupBuild (ctx: BuildContext) {
   }
 
   // Types
-  rollupOptions.plugins = rollupOptions.plugins || []
-  rollupOptions.plugins.push(dts({
-    respectExternal: true
-  }))
-  const typesBuild = await rollup(rollupOptions)
-  await typesBuild.write({
-    dir: resolve(ctx.rootDir, ctx.outDir),
-    format: 'esm'
-  })
+  if (ctx.declaration) {
+    rollupOptions.plugins = rollupOptions.plugins || []
+    rollupOptions.plugins.push(dts({
+      respectExternal: true
+    }))
+    const typesBuild = await rollup(rollupOptions)
+    await typesBuild.write({
+      dir: resolve(ctx.rootDir, ctx.outDir),
+      format: 'esm'
+    })
+  }
 }
 
 export function getRollupOptions (ctx: BuildContext): RollupOptions {
@@ -103,8 +105,9 @@ export function getRollupOptions (ctx: BuildContext): RollupOptions {
     },
 
     plugins: [
-      // TODO
-      alias({}),
+      alias({
+        [ctx.pkg.name]: ctx.rootDir
+      }),
 
       nodeResolve({
         extensions
diff --git a/src/builder/untyped.ts b/src/builder/untyped.ts
index 41d9d01c..8dfe8969 100644
--- a/src/builder/untyped.ts
+++ b/src/builder/untyped.ts
@@ -30,6 +30,8 @@ export async function typesBuild (ctx: BuildContext) {
     await writeFile(resolve(genDir, `${entry.name}.md`), generateMarkdown(schema))
     await writeFile(resolve(genDir, `${entry.name}.schema.json`), JSON.stringify(schema, null, 2))
     await writeFile(resolve(genDir, `${entry.name}.defaults.json`), JSON.stringify(defaults, null, 2))
-    await writeFile(resolve(genDir, `${entry.name}.d.ts`), 'export ' + generateTypes(schema, pascalCase(entry.name + '-schema')))
+    if (entry.declaration) {
+      await writeFile(resolve(genDir, `${entry.name}.d.ts`), 'export ' + generateTypes(schema, pascalCase(entry.name + '-schema')))
+    }
   }
 }
diff --git a/src/types.ts b/src/types.ts
index f4ab57ef..a0007c91 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -4,11 +4,13 @@ export interface BuildEntry {
   builder?: 'rollup' | 'mkdist' | 'untyped'
   format?: 'esm' | 'cjs'
   defaults?: Record<string, any>
+  declaration?: boolean
 }
 
 export interface BuildOptions {
   pkg: any,
   rootDir: string
+  declaration?: boolean
   entries: BuildEntry[],
   clean: boolean
   outDir: string