Template Upload

node_modules/buble/src/utils/spread.js

@@ -0,0 +1,46 @@
+export function isArguments ( node ) {
+	return node.type === 'Identifier' && node.name === 'arguments';
+}
+
+export default function spread ( code, elements, start, argumentsArrayAlias ) {
+	let i = elements.length;
+	let firstSpreadIndex = -1;
+
+	while ( i-- ) {
+		const element = elements[i];
+		if ( element && element.type === 'SpreadElement' ) {
+			if ( isArguments( element.argument ) ) {
+				code.overwrite( element.argument.start, element.argument.end, argumentsArrayAlias );
+			}
+
+			firstSpreadIndex = i;
+		}
+	}
+
+	if ( firstSpreadIndex === -1 ) return false; // false indicates no spread elements
+
+	let element = elements[ firstSpreadIndex ];
+	const previousElement = elements[ firstSpreadIndex - 1 ];
+
+	if ( !previousElement ) {
+		code.remove( start, element.start );
+		code.overwrite( element.end, elements[1].start, '.concat( ' );
+	} else {
+		code.overwrite( previousElement.end, element.start, ' ].concat( ' );
+	}
+
+	for ( i = firstSpreadIndex; i < elements.length; i += 1 ) {
+		element = elements[i];
+
+		if ( element ) {
+			if ( element.type === 'SpreadElement' ) {
+				code.remove( element.start, element.argument.start );
+			} else {
+				code.insertRight( element.start, '[' );
+				code.insertLeft( element.end, ']' );
+			}
+		}
+	}
+
+	return true; // true indicates some spread elements
+}