Don't swallow errors (#384)

* Change 'pattern does not match any files' warning to fatal

Fixes #383

* Raise a fatal error if the config file is not valid

Related to #383

src/main.ts

@@ -25,7 +25,7 @@ async function run() {
     if (config.input_files) {
       const patterns = unmatchedPatterns(config.input_files);
       patterns.forEach((pattern) =>
-        console.warn(`🤔 Pattern '${pattern}' does not match any files.`)
+        throw new Error(`⚠️  Pattern '${pattern}' does not match any files.`)
       );
       if (patterns.length > 0 && config.input_fail_on_unmatched_files) {
         throw new Error(`⚠️ There were unmatched files`);
@@ -63,7 +63,7 @@ async function run() {
     if (config.input_files && config.input_files.length > 0) {
       const files = paths(config.input_files);
       if (files.length == 0) {
-        console.warn(`🤔 ${config.input_files} not include valid file.`);
+        throw new Error(`⚠️ ${config.input_files} not include valid file.`);
       }
       const currentAssets = rel.assets;
       const assets = await Promise.all(