refactor: clean up logging

packages/webpack5/src/helpers/externalConfigs.ts

@@ -1,8 +1,7 @@
 import path from 'path';
 import fs from 'fs';
-import dedent from 'ts-dedent';
 import * as lib from '../index';
-import { error, info } from './log';
+import { error, info, warn } from './log';
 import { getAllDependencies, getDependencyPath } from './dependencies';
 
 export function applyExternalConfigs() {
@@ -17,17 +16,22 @@ export function applyExternalConfigs() {
 				const externalConfig = require(configPath);
 
 				if (typeof externalConfig === 'function') {
+					info('Applying external config...');
 					externalConfig(lib);
+				} else if (externalConfig) {
+					info('Merging external config...');
+					lib.mergeWebpack(externalConfig);
 				} else {
-					// todo: warn user
-					// todo: perhaps support exported objects to merge into config?
+					warn(
+						'Unsupported external config. The config must export a function or an object.'
+					);
 				}
 			} catch (err) {
 				error(
-					dedent`
-					Unable to apply config: ${configPath}.
-					Error is:
-				`,
+					`
+						Unable to apply config: ${configPath}.
+						Error is:
+					`,
 					err
 				);
 			}

packages/webpack5/src/helpers/flavor.ts

@@ -1,7 +1,6 @@
 import { defaultConfigs } from '@nativescript/webpack';
 import { getAllDependencies } from './dependencies';
 import { error } from './log';
-import dedent from 'ts-dedent';
 
 export function determineProjectFlavor(): keyof typeof defaultConfigs | false {
 	const dependencies = getAllDependencies();
@@ -35,7 +34,7 @@ export function determineProjectFlavor(): keyof typeof defaultConfigs | false {
 		return 'javascript';
 	}
 
-	error(dedent`
+	error(`
 		Could not determine project flavor.
 		Please use webpack.useConfig('<flavor>') to explicitly set the base config.
 	`);

packages/webpack5/src/helpers/log.ts

@@ -1,3 +1,34 @@
+import dedent from 'ts-dedent';
+
+// de-indents strings so multi-line string literals can be used
+function cleanup(data: any[]) {
+	return data.map((d) => {
+		if (typeof d === 'string') {
+			return dedent(d);
+		}
+		return d;
+	});
+}
+
+export function error(...data: any): Error {
+	console.error(`[@nativescript/webpack]`, ...cleanup(data));
+
+	// we return the error - the caller can throw or ignore
+	if (typeof data[0] === 'string') {
+		return new Error(data[0]);
+	}
+
+	return new Error('@nativescript/webpack ran into a problem...');
+}
+
+export function warn(...data: any): void {
+	console.warn(`[@nativescript/webpack]`, ...cleanup(data));
+}
+
+export function info(...data: any): void {
+	console.info(`[@nativescript/webpack]`, ...cleanup(data));
+}
+
 // todo: refine
 // export function error(message: string, info?: { possibleCauses?: string[] }) {
 // 	console.error(`
@@ -9,15 +40,3 @@
 // 	${info?.possibleCauses?.map((cause) => `- ${cause}`).join('\n')}
 // 	`);
 // }
-
-export function error(...data: any) {
-	console.error(`[@nativescript/webpack]`, ...data);
-}
-
-export function warn(...data: any) {
-	console.warn(`[@nativescript/webpack]`, ...data);
-}
-
-export function info(...data: any) {
-	console.info(`[@nativescript/webpack]`, ...data);
-}