Add 'fail_on_unmatched_files' input (#55)

src/main.ts

@@ -1,4 +1,4 @@
-import { paths, parseConfig, isTag } from "./util";
+import { paths, parseConfig, isTag, unmatchedPatterns } from "./util";
 import { release, upload, GitHubReleaser } from "./github";
 import { setFailed, setOutput } from "@actions/core";
 import { GitHub } from "@actions/github";
@@ -10,6 +10,15 @@ async function run() {
     if (!config.input_tag_name && !isTag(config.github_ref)) {
       throw new Error(`⚠️ GitHub Releases requires a tag`);
     }
+    if (config.input_files) {
+      const patterns = unmatchedPatterns(config.input_files);
+      patterns.forEach(pattern =>
+        console.warn(`🤔 Pattern '${pattern}' does not match any files.`)
+      );
+      if (patterns.length > 0 && config.input_fail_on_unmatched_files) {
+        throw new Error(`⚠️ There were unmatched files`);
+      }
+    }
     GitHub.plugin([
       require("@octokit/plugin-throttling"),
       require("@octokit/plugin-retry")

src/util.ts

@@ -13,6 +13,7 @@ export interface Config {
   input_files?: string[];
   input_draft?: boolean;
   input_prerelease?: boolean;
+  input_fail_on_unmatched_files?: boolean;
 }
 
 export const releaseBody = (config: Config): string | undefined => {
@@ -47,7 +48,8 @@ export const parseConfig = (env: Env): Config => {
     input_body_path: env.INPUT_BODY_PATH,
     input_files: parseInputFiles(env.INPUT_FILES || ""),
     input_draft: env.INPUT_DRAFT === "true",
-    input_prerelease: env.INPUT_PRERELEASE == "true"
+    input_prerelease: env.INPUT_PRERELEASE == "true",
+    input_fail_on_unmatched_files: env.INPUT_FAIL_ON_UNMATCHED_FILES == "true"
   };
 };
 
@@ -59,6 +61,16 @@ export const paths = (patterns: string[]): string[] => {
   }, []);
 };
 
+export const unmatchedPatterns = (patterns: string[]): string[] => {
+  return patterns.reduce((acc: string[], pattern: string): string[] => {
+    return acc.concat(
+      glob.sync(pattern).filter(path => lstatSync(path).isFile()).length == 0
+        ? [pattern]
+        : []
+    );
+  }, []);
+};
+
 export const isTag = (ref: string): boolean => {
   return ref.startsWith("refs/tags/");
 };