use plugin names in CLI logs

bin/src/logging.js

@@ -8,40 +8,33 @@ const errorSymbol = process.stderr.isTTY ? `🚨   ` : `Error: `;
 // log to stderr to keep `rollup main.js > bundle.js` from breaking
 export const stderr = console.error.bind( console ); // eslint-disable-line no-console
 
-export function handleWarning ( warning ) {
-	stderr( `${warnSymbol}${chalk.bold( warning.message )}` );
+function log ( object, symbol ) {
+	const message = object.plugin ? `(${object.plugin} plugin) ${object.message}` : object.message;
+
+	stderr( `${symbol}${chalk.bold( message )}` );
 
-	if ( warning.url ) {
-		stderr( chalk.cyan( warning.url ) );
+	if ( object.url ) {
+		stderr( chalk.cyan( object.url ) );
 	}
 
-	if ( warning.loc ) {
-		stderr( `${relativeId( warning.loc.file )} (${warning.loc.line}:${warning.loc.column})` );
+	if ( object.loc ) {
+		stderr( `${relativeId( object.loc.file )} (${object.loc.line}:${object.loc.column})` );
+	} else if ( object.id ) {
+		stderr( relativeId( object.id ) );
 	}
 
-	if ( warning.frame ) {
-		stderr( chalk.dim( warning.frame ) );
+	if ( object.frame ) {
+		stderr( chalk.dim( object.frame ) );
 	}
 
 	stderr( '' );
 }
 
-export function handleError ( err, recover ) {
-	stderr( `${errorSymbol}${chalk.bold( err.message )}` );
-
-	if ( err.url ) {
-		stderr( chalk.cyan( err.url ) );
-	}
-
-	if ( err.loc ) {
-		stderr( `${relativeId( err.loc.file )} (${err.loc.line}:${err.loc.column})` );
-	}
-
-	if ( err.frame ) {
-		stderr( chalk.dim( err.frame ) );
-	}
-
-	stderr( '' );
+export function handleWarning ( warning ) {
+	log( warning, warnSymbol );
+}
 
+export function handleError ( err, recover ) {
+	log( err, errorSymbol );
 	if ( !recover ) process.exit( 1 );
 }

src/Bundle.js

@@ -619,11 +619,13 @@ export default class Bundle {
 
 	warn ( warning ) {
 		warning.toString = () => {
-			if ( warning.loc ) {
-				return `${relativeId( warning.loc.file )} (${warning.loc.line}:${warning.loc.column}) ${warning.message}`;
-			}
+			let str = '';
+
+			if ( warning.plugin ) str += `(${warning.plugin} plugin) `;
+			if ( warning.loc ) str += `${relativeId( warning.loc.file )} (${warning.loc.line}:${warning.loc.column}) `;
+			str += warning.message;
 
-			return warning.message;
+			return str;
 		};
 
 		this.onwarn( warning );

src/utils/transform.js

@@ -44,6 +44,7 @@ export default function transform ( bundle, source, id, plugins ) {
 				warn: ( warning, pos ) => {
 					warning = augment( warning, pos, 'PLUGIN_WARNING' );
 					warning.plugin = plugin.name;
+					warning.id = id;
 					bundle.warn( warning );
 				},
 

test/function/plugin-warn/_config.js

@@ -15,11 +15,13 @@ module.exports = {
 	warnings: [
 		{
 			code: 'PLUGIN_WARNING',
+			id: path.resolve( __dirname, 'main.js' ),
 			plugin: 'test',
 			message: 'foo'
 		},
 		{
 			code: 'PLUGIN_WARNING',
+			id: path.resolve( __dirname, 'main.js' ),
 			plugin: 'test',
 			message: 'bar',
 			pos: 22,