Regex string can now be an array (#23)

Author: kellertk

dist/index.js

@@ -6,12 +6,22 @@ jobs:
   verify:
     runs-on: ubuntu-latest
     steps:
-      - uses: aws-actions/pr-regex-exclude@<commit_sha>
+      - uses: aws-actions/pr-regex-exclude@main
         with:
-          exclude-regex: '<your JS RegEx syntax here>'
+          # You will need to specify a regular expression in the syntax here:
+          # https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp
+          #
+          # This is a string pattern, not a RegExp literal.
+          # GitHub does not support an array or list as inputs to actions, so
+          # for multiple paths, either use the | (pipe) character, or specify 
+          # a JSON array of regular expressions:
+          # '(dist/(.*)\.js)|(\.editorconfig)'
+          # '["dist/(.*)\.js","\.editorconfig"]'
+          exclude-regex: '<your RegExp here>'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           message: |
-                   Thank you for submitting this PR, but it appears that at least one file in this
-                   request is against a part of our codebase that does not accept pull requests.
+                   Thank you for submitting this PR, but it appears that at least one file in this request is against a part of our codebase that does not accept pull requests.
+
                    Please check the [contributing guide](./CONTRIBUTING.md) for more information.
+
                    I am a bot; this action was performed automatically.

dist/index.js.map

@@ -2,15 +2,18 @@ import * as core from '@actions/core';
 import * as github from '@actions/github';
 import {closeAndCommentPR} from './close-and-comment';
 import {processDiffUrl} from './process-diff';
+import {parseRegex} from './regex';
 
 async function run(): Promise<void> {
   try {
-    const exemptRegex = new RegExp(
+    const exemptRegex = parseRegex(
       core.getInput('exclude-regex', {required: true})
     );
     const token = core.getInput('repo-token');
     const message = core.getInput('message', {required: true});
 
+    core.debug(`Your regex is ${exemptRegex}`);
+
     if (github.context.payload.pull_request === undefined) {
       core.setFailed('Trigger not a pull request');
       return;

dist/sourcemap-register.js

@@ -0,0 +1,18 @@
+function isJsonArray(token: string): boolean {
+  try {
+    if (Array.isArray(JSON.parse(token))) {
+      return true;
+    }
+  } catch (err) {
+    return false;
+  }
+  return false;
+}
+
+export function parseRegex(token: string): RegExp {
+  if (isJsonArray(token)) {
+    return new RegExp(`(${JSON.parse(token).join(')|(')})`);
+  } else {
+    return new RegExp(token);
+  }
+}