Resolve package type declaration directory

tools/scripts/postinstall

@@ -246,14 +246,22 @@ function main() {
 		// We need to empty out the `name` field in order to avoid running afoul of npm package name conventions (e.g., cannot have `'@stdlib/array/buffer'`; see https://docs.npmjs.com/files/package.json#name):
 		meta.name = '';
 
+		// Main entry point:
 		d = resolvePkg( pdir );
 		meta.main = path.join( d, pkg.main );
 		debug( 'Resolved package entry point: %s', meta.main );
 
+		// Browser entry point:
 		if ( pkg.browser ) {
 			meta.browser = path.join( d, pkg.browser );
 			debug( 'Resolved package browser entry point: %s', meta.browser );
 		}
+		// Package type declarations:
+		if ( pkg.types ) {
+			meta.types = path.join( d, pkg.types );
+			debug( 'Resolved package type declaration directory: %s', meta.types );
+		}
+		// Resolve the destination directory:
 		ndir = path.join( DEST_DIR, pdir );
 		if ( fs.existsSync( ndir ) ) {
 			debug( 'Destination directory already exists: %s', ndir );