Update dist with latest dependencies

Bumps [@types/semver](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/semver) from 7.3.1 to 7.3.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/semver)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.gitignore

@@ -2,3 +2,4 @@
 node_modules/
 lib/
 __tests__/runner/*
+.idea

dist/index.js

@@ -39,6 +39,8 @@ Object.defineProperty(exports, "__esModule", ({ value: true }));
 exports.IssueProcessor = void 0;
 const core = __importStar(__webpack_require__(186));
 const github_1 = __webpack_require__(438);
+const is_labeled_1 = __webpack_require__(792);
+const labels_to_list_1 = __webpack_require__(107);
 /***
  * Handle processing of issues for staleness/closure.
  */
@@ -89,7 +91,7 @@ class IssueProcessor {
                 const closeLabel = isPr
                     ? this.options.closePrLabel
                     : this.options.closeIssueLabel;
-                const exemptLabels = IssueProcessor.parseCommaSeparatedString(isPr ? this.options.exemptPrLabels : this.options.exemptIssueLabels);
+                const exemptLabels = labels_to_list_1.labelsToList(isPr ? this.options.exemptPrLabels : this.options.exemptIssueLabels);
                 const skipMessage = isPr
                     ? this.options.skipStalePrMessage
                     : this.options.skipStaleIssueMessage;
@@ -107,12 +109,12 @@ class IssueProcessor {
                     core.info(`Skipping ${issueType} because it is locked`);
                     continue; // don't process locked issues
                 }
-                if (exemptLabels.some((exemptLabel) => IssueProcessor.isLabeled(issue, exemptLabel))) {
+                if (exemptLabels.some((exemptLabel) => is_labeled_1.isLabeled(issue, exemptLabel))) {
                     core.info(`Skipping ${issueType} because it has an exempt label`);
                     continue; // don't process exempt issues
                 }
                 // does this issue have a stale label?
-                let isStale = IssueProcessor.isLabeled(issue, staleLabel);
+                let isStale = is_labeled_1.isLabeled(issue, staleLabel);
                 // should this issue be marked stale?
                 const shouldBeStale = !IssueProcessor.updatedSince(issue.updated_at, this.options.daysBeforeStale);
                 // determine if this issue needs to be marked stale first
@@ -158,7 +160,7 @@ class IssueProcessor {
                 yield this.closeIssue(issue, closeMessage, closeLabel);
             }
             else {
-                core.info(`Stale ${issueType} is not old enough to close yet (hasComments? ${issueHasComments}, hasUpdate? ${issueHasUpdate}`);
+                core.info(`Stale ${issueType} is not old enough to close yet (hasComments? ${issueHasComments}, hasUpdate? ${issueHasUpdate})`);
             }
         });
     }
@@ -350,26 +352,82 @@ class IssueProcessor {
             return staleLabeledEvent.created_at;
         });
     }
-    static isLabeled(issue, label) {
-        const labelComparer = l => label.localeCompare(l.name, undefined, { sensitivity: 'accent' }) === 0;
-        return issue.labels.filter(labelComparer).length > 0;
-    }
     static updatedSince(timestamp, num_days) {
         const daysInMillis = 1000 * 60 * 60 * 24 * num_days;
         const millisSinceLastUpdated = new Date().getTime() - new Date(timestamp).getTime();
         return millisSinceLastUpdated <= daysInMillis;
     }
-    static parseCommaSeparatedString(s) {
-        // String.prototype.split defaults to [''] when called on an empty string
-        // In this case, we'd prefer to just return an empty array indicating no labels
-        if (!s.length)
-            return [];
-        return s.split(',').map(l => l.trim());
-    }
 }
 exports.IssueProcessor = IssueProcessor;
 
 
+/***/ }),
+
+/***/ 792:
+/***/ (function(__unused_webpack_module, exports, __webpack_require__) {
+
+"use strict";
+
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.isLabeled = void 0;
+const lodash_deburr_1 = __importDefault(__webpack_require__(601));
+/**
+ * @description
+ * Check if the label is listed as a label of the issue
+ *
+ * @param {Readonly<Issue>} issue A GitHub issue containing some labels
+ * @param {Readonly<string>} label The label to check the presence with
+ *
+ * @return {boolean} Return true when the given label is also in the issue labels
+ */
+function isLabeled(issue, label) {
+    return !!issue.labels.find((issueLabel) => {
+        return cleanLabel(label) === cleanLabel(issueLabel.name);
+    });
+}
+exports.isLabeled = isLabeled;
+function cleanLabel(label) {
+    return lodash_deburr_1.default(label.toLowerCase());
+}
+
+
+/***/ }),
+
+/***/ 107:
+/***/ ((__unused_webpack_module, exports) => {
+
+"use strict";
+
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.labelsToList = void 0;
+/**
+ * @description
+ * Transform a string of comma separated labels
+ * to an array of labels
+ *
+ * @example
+ * labelsToList('label') => ['label']
+ * labelsToList('label,label') => ['label', 'label']
+ * labelsToList('kebab-label') => ['kebab-label']
+ * labelsToList('kebab%20label') => ['kebab%20label']
+ * labelsToList('label with words') => ['label with words']
+ *
+ * @param {Readonly<string>} labels A string of comma separated labels
+ *
+ * @return {string[]} A list of labels
+ */
+function labelsToList(labels) {
+    if (!labels.length) {
+        return [];
+    }
+    return labels.split(',').map(l => l.trim());
+}
+exports.labelsToList = labelsToList;
+
+
 /***/ }),
 
 /***/ 109:
@@ -4208,6 +4266,270 @@ function isPlainObject(o) {
 module.exports = isPlainObject;
 
 
+/***/ }),
+
+/***/ 601:
+/***/ ((module) => {
+
+/**
+ * lodash (Custom Build) <https://lodash.com/>
+ * Build: `lodash modularize exports="npm" -o ./`
+ * Copyright jQuery Foundation and other contributors <https://jquery.org/>
+ * Released under MIT license <https://lodash.com/license>
+ * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
+ * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+ */
+
+/** Used as references for various `Number` constants. */
+var INFINITY = 1 / 0;
+
+/** `Object#toString` result references. */
+var symbolTag = '[object Symbol]';
+
+/** Used to match Latin Unicode letters (excluding mathematical operators). */
+var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
+
+/** Used to compose unicode character classes. */
+var rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
+    rsComboSymbolsRange = '\\u20d0-\\u20f0';
+
+/** Used to compose unicode capture groups. */
+var rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']';
+
+/**
+ * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
+ * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
+ */
+var reComboMark = RegExp(rsCombo, 'g');
+
+/** Used to map Latin Unicode letters to basic Latin letters. */
+var deburredLetters = {
+  // Latin-1 Supplement block.
+  '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
+  '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
+  '\xc7': 'C',  '\xe7': 'c',
+  '\xd0': 'D',  '\xf0': 'd',
+  '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
+  '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
+  '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
+  '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
+  '\xd1': 'N',  '\xf1': 'n',
+  '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
+  '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
+  '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
+  '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
+  '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
+  '\xc6': 'Ae', '\xe6': 'ae',
+  '\xde': 'Th', '\xfe': 'th',
+  '\xdf': 'ss',
+  // Latin Extended-A block.
+  '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
+  '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
+  '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
+  '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
+  '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
+  '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
+  '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
+  '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
+  '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
+  '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
+  '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
+  '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
+  '\u0134': 'J',  '\u0135': 'j',
+  '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
+  '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
+  '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
+  '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
+  '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
+  '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
+  '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
+  '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
+  '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
+  '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
+  '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
+  '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
+  '\u0163': 't',  '\u0165': 't', '\u0167': 't',
+  '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
+  '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
+  '\u0174': 'W',  '\u0175': 'w',
+  '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
+  '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
+  '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
+  '\u0132': 'IJ', '\u0133': 'ij',
+  '\u0152': 'Oe', '\u0153': 'oe',
+  '\u0149': "'n", '\u017f': 'ss'
+};
+
+/** Detect free variable `global` from Node.js. */
+var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
+
+/** Detect free variable `self`. */
+var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
+
+/** Used as a reference to the global object. */
+var root = freeGlobal || freeSelf || Function('return this')();
+
+/**
+ * The base implementation of `_.propertyOf` without support for deep paths.
+ *
+ * @private
+ * @param {Object} object The object to query.
+ * @returns {Function} Returns the new accessor function.
+ */
+function basePropertyOf(object) {
+  return function(key) {
+    return object == null ? undefined : object[key];
+  };
+}
+
+/**
+ * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
+ * letters to basic Latin letters.
+ *
+ * @private
+ * @param {string} letter The matched letter to deburr.
+ * @returns {string} Returns the deburred letter.
+ */
+var deburrLetter = basePropertyOf(deburredLetters);
+
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/**
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var objectToString = objectProto.toString;
+
+/** Built-in value references. */
+var Symbol = root.Symbol;
+
+/** Used to convert symbols to primitives and strings. */
+var symbolProto = Symbol ? Symbol.prototype : undefined,
+    symbolToString = symbolProto ? symbolProto.toString : undefined;
+
+/**
+ * The base implementation of `_.toString` which doesn't convert nullish
+ * values to empty strings.
+ *
+ * @private
+ * @param {*} value The value to process.
+ * @returns {string} Returns the string.
+ */
+function baseToString(value) {
+  // Exit early for strings to avoid a performance hit in some environments.
+  if (typeof value == 'string') {
+    return value;
+  }
+  if (isSymbol(value)) {
+    return symbolToString ? symbolToString.call(value) : '';
+  }
+  var result = (value + '');
+  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
+}
+
+/**
+ * Checks if `value` is object-like. A value is object-like if it's not `null`
+ * and has a `typeof` result of "object".
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
+ * @example
+ *
+ * _.isObjectLike({});
+ * // => true
+ *
+ * _.isObjectLike([1, 2, 3]);
+ * // => true
+ *
+ * _.isObjectLike(_.noop);
+ * // => false
+ *
+ * _.isObjectLike(null);
+ * // => false
+ */
+function isObjectLike(value) {
+  return !!value && typeof value == 'object';
+}
+
+/**
+ * Checks if `value` is classified as a `Symbol` primitive or object.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
+ * @example
+ *
+ * _.isSymbol(Symbol.iterator);
+ * // => true
+ *
+ * _.isSymbol('abc');
+ * // => false
+ */
+function isSymbol(value) {
+  return typeof value == 'symbol' ||
+    (isObjectLike(value) && objectToString.call(value) == symbolTag);
+}
+
+/**
+ * Converts `value` to a string. An empty string is returned for `null`
+ * and `undefined` values. The sign of `-0` is preserved.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to process.
+ * @returns {string} Returns the string.
+ * @example
+ *
+ * _.toString(null);
+ * // => ''
+ *
+ * _.toString(-0);
+ * // => '-0'
+ *
+ * _.toString([1, 2, 3]);
+ * // => '1,2,3'
+ */
+function toString(value) {
+  return value == null ? '' : baseToString(value);
+}
+
+/**
+ * Deburrs `string` by converting
+ * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
+ * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
+ * letters to basic Latin letters and removing
+ * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
+ *
+ * @static
+ * @memberOf _
+ * @since 3.0.0
+ * @category String
+ * @param {string} [string=''] The string to deburr.
+ * @returns {string} Returns the deburred string.
+ * @example
+ *
+ * _.deburr('déjà vu');
+ * // => 'deja vu'
+ */
+function deburr(string) {
+  string = toString(string);
+  return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
+}
+
+module.exports = deburr;
+
+
 /***/ }),
 
 /***/ 467:

jest.config.js

@@ -2,10 +2,10 @@ module.exports = {
   clearMocks: true,
   moduleFileExtensions: ['js', 'ts'],
   testEnvironment: 'node',
-  testMatch: ['**/*.test.ts'],
+  testMatch: ['**/*.test.ts', '**/*.spec.ts'],
   testRunner: 'jest-circus/runner',
   transform: {
     '^.+\\.ts$': 'ts-jest'
   },
   verbose: true
-}
+};

package-lock.json

@@ -977,6 +977,32 @@
         "@types/yargs": "^13.0.0"
       }
     },
+    "@nodelib/fs.scandir": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.3.tgz",
+      "integrity": "sha512-eGmwYQn3gxo4r7jdQnkrrN6bY478C3P+a/y72IJukF8LjB6ZHeB3c+Ehacj3sYeSmUXGlnA67/PmbM9CVwL7Dw==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.stat": "2.0.3",
+        "run-parallel": "^1.1.9"
+      }
+    },
+    "@nodelib/fs.stat": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.3.tgz",
+      "integrity": "sha512-bQBFruR2TAwoevBEd/NWMoAAtNGzTRgdrqnYCc7dhzfoNvqPzLyqlEQnzZ3kVnNrSp25iyxE00/3h2fqGAGArA==",
+      "dev": true
+    },
+    "@nodelib/fs.walk": {
+      "version": "1.2.4",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.4.tgz",
+      "integrity": "sha512-1V9XOY4rDW0rehzbrcqAmHnz8e7SKvX27gh8Gt2WgB0+pdzdiLV83p72kZPU+jvMbS1qU5mauP2iOvO8rhmurQ==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.scandir": "2.1.3",
+        "fastq": "^1.6.0"
+      }
+    },
     "@octokit/auth-token": {
       "version": "2.4.2",
       "resolved": "https://registry.npmjs.org/@octokit/auth-token/-/auth-token-2.4.2.tgz",
@@ -1027,9 +1053,9 @@
       }
     },
     "@octokit/plugin-request-log": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@octokit/plugin-request-log/-/plugin-request-log-1.0.0.tgz",
-      "integrity": "sha512-ywoxP68aOT3zHCLgWZgwUJatiENeHE7xJzYjfz8WI0goynp96wETBF+d95b8g/uL4QmS6owPVlaxiz3wyMAzcw=="
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@octokit/plugin-request-log/-/plugin-request-log-1.0.2.tgz",
+      "integrity": "sha512-oTJSNAmBqyDR41uSMunLQKMX0jmEXbwD1fpz8FG27lScV3RhtGfBa1/BBLym+PxcC16IBlF7KH9vP1BUYxA+Eg=="
     },
     "@octokit/plugin-rest-endpoint-methods": {
       "version": "4.1.2",
@@ -1066,24 +1092,32 @@
       }
     },
     "@octokit/rest": {
-      "version": "18.0.4",
-      "resolved": "https://registry.npmjs.org/@octokit/rest/-/rest-18.0.4.tgz",
-      "integrity": "sha512-l4PspvLvBG+bTDsji+XceDWuIf7qAZHLljbqJZ6UDdtACkW+MuFsprXicV5pEFAkxfPusyVDDPYJKRY1KJb7Zg==",
+      "version": "18.0.9",
+      "resolved": "https://registry.npmjs.org/@octokit/rest/-/rest-18.0.9.tgz",
+      "integrity": "sha512-CC5+cIx974Ygx9lQNfUn7/oXDQ9kqGiKUC6j1A9bAVZZ7aoTF8K6yxu0pQhQrLBwSl92J6Z3iVDhGhGFgISCZg==",
       "requires": {
         "@octokit/core": "^3.0.0",
         "@octokit/plugin-paginate-rest": "^2.2.0",
         "@octokit/plugin-request-log": "^1.0.0",
-        "@octokit/plugin-rest-endpoint-methods": "4.1.3"
+        "@octokit/plugin-rest-endpoint-methods": "4.2.1"
       },
       "dependencies": {
         "@octokit/plugin-rest-endpoint-methods": {
-          "version": "4.1.3",
-          "resolved": "https://registry.npmjs.org/@octokit/plugin-rest-endpoint-methods/-/plugin-rest-endpoint-methods-4.1.3.tgz",
-          "integrity": "sha512-az3seq9yuc0OXlNLrZ0fWTNbFuL4sN8GN1sLmovELg3+LnpWmOs3GAn2KGa6E7SKMgpCuFvJwvsHEfYasTHUxQ==",
+          "version": "4.2.1",
+          "resolved": "https://registry.npmjs.org/@octokit/plugin-rest-endpoint-methods/-/plugin-rest-endpoint-methods-4.2.1.tgz",
+          "integrity": "sha512-QyFr4Bv807Pt1DXZOC5a7L5aFdrwz71UHTYoHVajYV5hsqffWm8FUl9+O7nxRu5PDMtB/IKrhFqTmdBTK5cx+A==",
           "requires": {
-            "@octokit/types": "^5.1.1",
+            "@octokit/types": "^5.5.0",
             "deprecation": "^2.3.1"
           }
+        },
+        "@octokit/types": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/@octokit/types/-/types-5.5.0.tgz",
+          "integrity": "sha512-UZ1pErDue6bZNjYOotCNveTXArOMZQFG6hKJfOnGnulVCMcVVi7YIIuuR4WfBhjo7zgpmzn/BkPDnUXtNx+PcQ==",
+          "requires": {
+            "@types/node": ">= 8"
+          }
         }
       }
     },
@@ -1160,12 +1194,6 @@
       "integrity": "sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ==",
       "dev": true
     },
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+            "@typescript-eslint/types": "4.7.0",
+            "eslint-visitor-keys": "^2.0.0"
+          }
+        },
+        "eslint-visitor-keys": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-2.0.0.tgz",
+          "integrity": "sha512-QudtT6av5WXels9WjIM7qz1XD1cWGvX4gGXvp/zBn9nXG02D0utdU3Em2m/QjTnrsk6bBjmCygl3rmj118msQQ==",
+          "dev": true
         }
       }
     },
@@ -1513,18 +1615,43 @@
       "dev": true
     },
     "@typescript-eslint/typescript-estree": {
-      "version": "2.34.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-2.34.0.tgz",
-      "integrity": "sha512-OMAr+nJWKdlVM9LOqCqh3pQQPwxHAN7Du8DR6dmwCrAmxtiXQnhHJ6tBNtf+cggqfo51SG/FCwnKhXCIM7hnVg==",
+      "version": "4.7.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-4.7.0.tgz",
+      "integrity": "sha512-5XZRQznD1MfUmxu1t8/j2Af4OxbA7EFU2rbo0No7meb46eHgGkSieFdfV6omiC/DGIBhH9H9gXn7okBbVOm8jw==",
       "dev": true,
       "requires": {
+        "@typescript-eslint/types": "4.7.0",
+        "@typescript-eslint/visitor-keys": "4.7.0",
         "debug": "^4.1.1",
-        "eslint-visitor-keys": "^1.1.0",
-        "glob": "^7.1.6",
+        "globby": "^11.0.1",
         "is-glob": "^4.0.1",
         "lodash": "^4.17.15",
         "semver": "^7.3.2",
         "tsutils": "^3.17.1"
+      },
+      "dependencies": {
+        "@typescript-eslint/types": {
+          "version": "4.7.0",
+          "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-4.7.0.tgz",
+          "integrity": "sha512-uLszFe0wExJc+I7q0Z/+BnP7wao/kzX0hB5vJn4LIgrfrMLgnB2UXoReV19lkJQS1a1mHWGGODSxnBx6JQC3Sg==",
+          "dev": true
+        },
+        "@typescript-eslint/visitor-keys": {
+          "version": "4.7.0",
+          "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-4.7.0.tgz",
+          "integrity": "sha512-aDJDWuCRsf1lXOtignlfiPODkzSxxop7D0rZ91L6ZuMlcMCSh0YyK+gAfo5zN/ih6WxMwhoXgJWC3cWQdaKC+A==",
+          "dev": true,
+          "requires": {
+            "@typescript-eslint/types": "4.7.0",
+            "eslint-visitor-keys": "^2.0.0"
+          }
+        },
+        "eslint-visitor-keys": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-2.0.0.tgz",
+          "integrity": "sha512-QudtT6av5WXels9WjIM7qz1XD1cWGvX4gGXvp/zBn9nXG02D0utdU3Em2m/QjTnrsk6bBjmCygl3rmj118msQQ==",
+          "dev": true
+        }
       }
     },
     "@typescript-eslint/visitor-keys": {
@@ -1669,6 +1796,12 @@
         "is-string": "^1.0.5"
       }
     },
+    "array-union": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/array-union/-/array-union-2.1.0.tgz",
+      "integrity": "sha512-HGyxoOTYUyCM6stUe6EJgnd4EoewAI7zMdfqO+kGjnlZmBDz/cR5pf8r/cR4Wq60sL/p0IkcjUEEPwS3GFrIyw==",
+      "dev": true
+    },
     "array-unique": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
@@ -2444,6 +2577,23 @@
       "integrity": "sha512-Dj6Wk3tWyTE+Fo1rW8v0Xhwk80um6yFYKbuAxc9c3EZxIHFDYwbi34Uk42u1CdnIiVorvt4RmlSDjIPyzGC2ew==",
       "dev": true
     },
+    "dir-glob": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/dir-glob/-/dir-glob-3.0.1.tgz",
+      "integrity": "sha512-WkrWp9GR4KXfKGYzOLmTuGVi1UWFfws377n9cc55/tb6DuqyF6pcQ5AbiHEshaDpY9v6oaSr2XCDidGmMwdzIA==",
+      "dev": true,
+      "requires": {
+        "path-type": "^4.0.0"
+      },
+      "dependencies": {
+        "path-type": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",
+          "integrity": "sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==",
+          "dev": true
+        }
+      }
+    },
     "doctrine": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
@@ -2960,12 +3110,12 @@
       }
     },
     "eslint-plugin-jest": {
-      "version": "23.20.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-jest/-/eslint-plugin-jest-23.20.0.tgz",
-      "integrity": "sha512-+6BGQt85OREevBDWCvhqj1yYA4+BFK4XnRZSGJionuEYmcglMZYLNNBBemwzbqUAckURaHdJSBcjHPyrtypZOw==",
+      "version": "24.1.3",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-jest/-/eslint-plugin-jest-24.1.3.tgz",
+      "integrity": "sha512-dNGGjzuEzCE3d5EPZQ/QGtmlMotqnYWD/QpCZ1UuZlrMAdhG5rldh0N0haCvhGnUkSeuORS5VNROwF9Hrgn3Lg==",
       "dev": true,
       "requires": {
-        "@typescript-eslint/experimental-utils": "^2.5.0"
+        "@typescript-eslint/experimental-utils": "^4.0.1"
       }
     },
     "eslint-plugin-prettier": {
@@ -3293,6 +3443,65 @@
       "integrity": "sha512-xJuoT5+L99XlZ8twedaRf6Ax2TgQVxvgZOYoPKqZufmJib0tL2tegPBOZb1pVNgIhlqDlA0eO0c3wBvQcmzx4w==",
       "dev": true
     },
+    "fast-glob": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.2.4.tgz",
+      "integrity": "sha512-kr/Oo6PX51265qeuCYsyGypiO5uJFgBS0jksyG7FUeCyQzNwYnzrNIMR1NXfkZXsMYXYLRAHgISHBz8gQcxKHQ==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.stat": "^2.0.2",
+        "@nodelib/fs.walk": "^1.2.3",
+        "glob-parent": "^5.1.0",
+        "merge2": "^1.3.0",
+        "micromatch": "^4.0.2",
+        "picomatch": "^2.2.1"
+      },
+      "dependencies": {
+        "braces": {
+          "version": "3.0.2",
+          "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
+          "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+          "dev": true,
+          "requires": {
+            "fill-range": "^7.0.1"
+          }
+        },
+        "fill-range": {
+          "version": "7.0.1",
+          "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
+          "integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
+          "dev": true,
+          "requires": {
+            "to-regex-range": "^5.0.1"
+          }
+        },
+        "is-number": {
+          "version": "7.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
+          "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
+          "dev": true
+        },
+        "micromatch": {
+          "version": "4.0.2",
+          "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.2.tgz",
+          "integrity": "sha512-y7FpHSbMUMoyPbYUSzO6PaZ6FyRnQOpHuKwbo1G+Knck95XVU4QAiKdGEnj5wwoS7PlOgthX/09u5iFJ+aYf5Q==",
+          "dev": true,
+          "requires": {
+            "braces": "^3.0.1",
+            "picomatch": "^2.0.5"
+          }
+        },
+        "to-regex-range": {
+          "version": "5.0.1",
+          "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+          "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+          "dev": true,
+          "requires": {
+            "is-number": "^7.0.0"
+          }
+        }
+      }
+    },
     "fast-json-stable-stringify": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
@@ -3305,6 +3514,15 @@
       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=",
       "dev": true
     },
+    "fastq": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.9.0.tgz",
+      "integrity": "sha512-i7FVWL8HhVY+CTkwFxkN2mk3h+787ixS5S63eb78diVRc1MCssarHq3W5cj0av7YDSwmaV928RNag+U1etRQ7w==",
+      "dev": true,
+      "requires": {
+        "reusify": "^1.0.4"
+      }
+    },
     "fb-watchman": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/fb-watchman/-/fb-watchman-2.0.1.tgz",
@@ -4057,6 +4275,34 @@
       "integrity": "sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==",
       "dev": true
     },
+    "globby": {
+      "version": "11.0.1",
+      "resolved": "https://registry.npmjs.org/globby/-/globby-11.0.1.tgz",
+      "integrity": "sha512-iH9RmgwCmUJHi2z5o2l3eTtGBtXek1OYlHrbcxOYugyHLmAsZrPj43OtHThd62Buh/Vv6VyCBD2bdyWcGNQqoQ==",
+      "dev": true,
+      "requires": {
+        "array-union": "^2.1.0",
+        "dir-glob": "^3.0.1",
+        "fast-glob": "^3.1.1",
+        "ignore": "^5.1.4",
+        "merge2": "^1.3.0",
+        "slash": "^3.0.0"
+      },
+      "dependencies": {
+        "ignore": {
+          "version": "5.1.8",
+          "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.1.8.tgz",
+          "integrity": "sha512-BMpfD7PpiETpBl/A6S498BaIJ6Y/ABT93ETbby2fP00v4EbvPBXWEoaR1UBPKs3iR53pJY7EtZk5KACI57i1Uw==",
+          "dev": true
+        },
+        "slash": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
+          "integrity": "sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==",
+          "dev": true
+        }
+      }
+    },
     "graceful-fs": {
       "version": "4.2.3",
       "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.3.tgz",
@@ -6423,6 +6669,11 @@
       "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==",
       "dev": true
     },
+    "lodash.deburr": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/lodash.deburr/-/lodash.deburr-4.1.0.tgz",
+      "integrity": "sha1-3bG7s+8HRYwBd7oH3hRCLLAz/5s="
+    },
     "lodash.memoize": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
@@ -6504,6 +6755,12 @@
       "integrity": "sha512-abv/qOcuPfk3URPfDzmZU1LKmuw8kT+0nIHvKrKgFrwifol/doWcdA4ZqsWQ8ENrFKkd67Mfpo/LovbIUsbt3w==",
       "dev": true
     },
+    "merge2": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/merge2/-/merge2-1.4.1.tgz",
+      "integrity": "sha512-8q7VEgMJW4J8tcfVPy8g09NcQwZdbwFEqhe/WZkoIzjn/3TGDwtOCYtXGxA3O8tPzpczCCDgv+P2P5y00ZJOOg==",
+      "dev": true
+    },
     "micromatch": {
       "version": "3.1.10",
       "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
@@ -7365,6 +7622,12 @@
       "integrity": "sha512-TTlYpa+OL+vMMNG24xSlQGEJ3B/RzEfUlLct7b5G/ytav+wPrplCpVMFuwzXbkecJrb6IYo1iFb0S9v37754mg==",
       "dev": true
     },
+    "reusify": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz",
+      "integrity": "sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==",
+      "dev": true
+    },
     "rimraf": {
       "version": "2.6.3",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
@@ -7380,6 +7643,12 @@
       "integrity": "sha512-nfMOlASu9OnRJo1mbEk2cz0D56a1MBNrJ7orjRZQG10XDyuvwksKbuXNp6qa+kbn839HwjwhBzhFmdsaEAfauA==",
       "dev": true
     },
+    "run-parallel": {
+      "version": "1.1.10",
+      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.1.10.tgz",
+      "integrity": "sha512-zb/1OuZ6flOlH6tQyMPUrE3x3Ulxjlo9WIVXR4yVYi4H9UXQaeIsPbLn2R3O3vQCnDKkAl2qHiuocKKX4Tz/Sw==",
+      "dev": true
+    },
     "safe-buffer": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",

package.json

@@ -9,6 +9,7 @@
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts",
     "lint": "eslint src/**/*.ts",
+    "lint:fix": "eslint src/**/*.ts --fix",
     "pack": "ncc build",
     "test": "jest",
     "all": "npm run build && npm run format && npm run lint && npm run pack && npm test"
@@ -27,18 +28,20 @@
   "dependencies": {
     "@actions/core": "^1.2.6",
     "@actions/github": "^4.0.0",
-    "@octokit/rest": "^18.0.4",
+    "@octokit/rest": "^18.0.9",
+    "lodash.deburr": "^4.1.0",
     "semver": "^7.3.2"
   },
   "devDependencies": {
-    "@types/semver": "^7.3.1",
-    "@types/jest": "^26.0.10",
+    "@types/jest": "^26.0.15",
+    "@types/lodash.deburr": "^4.1.6",
     "@types/node": "^14.10.0",
-    "@typescript-eslint/parser": "^3.10.1",
+    "@types/semver": "^7.3.4",
+    "@typescript-eslint/parser": "^4.8.1",
     "@vercel/ncc": "^0.24.0",
     "eslint": "^7.7.0",
     "eslint-plugin-github": "^4.0.1",
-    "eslint-plugin-jest": "^23.20.0",
+    "eslint-plugin-jest": "^24.1.3",
     "jest": "^24.9.0",
     "jest-circus": "^26.4.2",
     "js-yaml": "^3.14.0",

src/IssueProcessor.ts

@@ -1,6 +1,8 @@
 import * as core from '@actions/core';
 import {context, getOctokit} from '@actions/github';
 import {GetResponseTypeFromEndpointMethod} from '@octokit/types';
+import {isLabeled} from './functions/is-labeled';
+import {labelsToList} from './functions/labels-to-list';
 
 export interface Issue {
   title: string;
@@ -131,7 +133,7 @@ export class IssueProcessor {
       const closeLabel: string = isPr
         ? this.options.closePrLabel
         : this.options.closeIssueLabel;
-      const exemptLabels = IssueProcessor.parseCommaSeparatedString(
+      const exemptLabels: string[] = labelsToList(
         isPr ? this.options.exemptPrLabels : this.options.exemptIssueLabels
       );
       const skipMessage = isPr
@@ -157,7 +159,7 @@ export class IssueProcessor {
 
       if (
         exemptLabels.some((exemptLabel: string) =>
-          IssueProcessor.isLabeled(issue, exemptLabel)
+          isLabeled(issue, exemptLabel)
         )
       ) {
         core.info(`Skipping ${issueType} because it has an exempt label`);
@@ -165,7 +167,7 @@ export class IssueProcessor {
       }
 
       // does this issue have a stale label?
-      let isStale = IssueProcessor.isLabeled(issue, staleLabel);
+      let isStale = isLabeled(issue, staleLabel);
 
       // should this issue be marked stale?
       const shouldBeStale = !IssueProcessor.updatedSince(
@@ -250,7 +252,7 @@ export class IssueProcessor {
       await this.closeIssue(issue, closeMessage, closeLabel);
     } else {
       core.info(
-        `Stale ${issueType} is not old enough to close yet (hasComments? ${issueHasComments}, hasUpdate? ${issueHasUpdate}`
+        `Stale ${issueType} is not old enough to close yet (hasComments? ${issueHasComments}, hasUpdate? ${issueHasUpdate})`
       );
     }
   }
@@ -486,12 +488,6 @@ export class IssueProcessor {
     return staleLabeledEvent.created_at;
   }
 
-  private static isLabeled(issue: Issue, label: string): boolean {
-    const labelComparer: (l: Label) => boolean = l =>
-      label.localeCompare(l.name, undefined, {sensitivity: 'accent'}) === 0;
-    return issue.labels.filter(labelComparer).length > 0;
-  }
-
   private static updatedSince(timestamp: string, num_days: number): boolean {
     const daysInMillis = 1000 * 60 * 60 * 24 * num_days;
     const millisSinceLastUpdated =
@@ -499,11 +495,4 @@ export class IssueProcessor {
 
     return millisSinceLastUpdated <= daysInMillis;
   }
-
-  private static parseCommaSeparatedString(s: string): string[] {
-    // String.prototype.split defaults to [''] when called on an empty string
-    // In this case, we'd prefer to just return an empty array indicating no labels
-    if (!s.length) return [];
-    return s.split(',').map(l => l.trim());
-  }
 }

src/functions/is-labeled.spec.ts

@@ -0,0 +1,187 @@
+import {Issue} from '../IssueProcessor';
+import {isLabeled} from './is-labeled';
+
+describe('isLabeled()', (): void => {
+  let issue: Issue;
+  let label: string;
+
+  describe('when the given issue contains no label', (): void => {
+    beforeEach((): void => {
+      issue = ({
+        labels: []
+      } as unknown) as Issue;
+    });
+
+    describe('when the given label is a simple label', (): void => {
+      beforeEach((): void => {
+        label = 'label';
+      });
+
+      it('should return false', (): void => {
+        expect.assertions(1);
+
+        const result = isLabeled(issue, label);
+
+        expect(result).toStrictEqual(false);
+      });
+    });
+  });
+
+  describe('when the given issue contains a simple label', (): void => {
+    beforeEach((): void => {
+      issue = {
+        labels: [
+          {
+            name: 'label'
+          }
+        ]
+      } as Issue;
+    });
+
+    describe('when the given label is a simple label', (): void => {
+      beforeEach((): void => {
+        label = 'label';
+      });
+
+      it('should return true', (): void => {
+        expect.assertions(1);
+
+        const result = isLabeled(issue, label);
+
+        expect(result).toStrictEqual(true);
+      });
+    });
+  });
+
+  describe('when the given issue contains a kebab case label', (): void => {
+    beforeEach((): void => {
+      issue = {
+        labels: [
+          {
+            name: 'kebab-case-label'
+          }
+        ]
+      } as Issue;
+    });
+
+    describe('when the given label is a kebab case label', (): void => {
+      beforeEach((): void => {
+        label = 'kebab-case-label';
+      });
+
+      it('should return true', (): void => {
+        expect.assertions(1);
+
+        const result = isLabeled(issue, label);
+
+        expect(result).toStrictEqual(true);
+      });
+    });
+  });
+
+  describe('when the given issue contains a multiple word label', (): void => {
+    beforeEach((): void => {
+      issue = {
+        labels: [
+          {
+            name: 'label like a sentence'
+          }
+        ]
+      } as Issue;
+    });
+
+    describe('when the given label is a multiple word label', (): void => {
+      beforeEach((): void => {
+        label = 'label like a sentence';
+      });
+
+      it('should return true', (): void => {
+        expect.assertions(1);
+
+        const result = isLabeled(issue, label);
+
+        expect(result).toStrictEqual(true);
+      });
+    });
+  });
+
+  describe('when the given issue contains a multiple word label with %20 spaces', (): void => {
+    beforeEach((): void => {
+      issue = {
+        labels: [
+          {
+            name: 'label%20like%20a%20sentence'
+          }
+        ]
+      } as Issue;
+    });
+
+    describe('when the given label is a multiple word label with %20 spaces', (): void => {
+      beforeEach((): void => {
+        label = 'label%20like%20a%20sentence';
+      });
+
+      it('should return true', (): void => {
+        expect.assertions(1);
+
+        const result = isLabeled(issue, label);
+
+        expect(result).toStrictEqual(true);
+      });
+    });
+  });
+
+  describe('when the given issue contains a label wih diacritical marks', (): void => {
+    beforeEach((): void => {
+      issue = {
+        labels: [
+          {
+            name: 'déjà vu'
+          }
+        ]
+      } as Issue;
+    });
+
+    describe('when the given issue contains a label', (): void => {
+      beforeEach((): void => {
+        label = 'deja vu';
+      });
+
+      it('should return true', (): void => {
+        expect.assertions(1);
+
+        const result = isLabeled(issue, label);
+
+        expect(result).toStrictEqual(true);
+      });
+    });
+
+    describe('when the given issue contains an uppercase label', (): void => {
+      beforeEach((): void => {
+        label = 'DEJA VU';
+      });
+
+      it('should return true', (): void => {
+        expect.assertions(1);
+
+        const result = isLabeled(issue, label);
+
+        expect(result).toStrictEqual(true);
+      });
+    });
+
+    describe('when the given issue contains a label wih diacritical marks', (): void => {
+      beforeEach((): void => {
+        label = 'déjà vu';
+      });
+
+      it('should return true', (): void => {
+        expect.assertions(1);
+
+        const result = isLabeled(issue, label);
+
+        expect(result).toStrictEqual(true);
+      });
+    });
+  });
+});

src/functions/is-labeled.ts

@@ -0,0 +1,24 @@
+import deburr from 'lodash.deburr';
+import {Issue, Label} from '../IssueProcessor';
+
+/**
+ * @description
+ * Check if the label is listed as a label of the issue
+ *
+ * @param {Readonly<Issue>} issue A GitHub issue containing some labels
+ * @param {Readonly<string>} label The label to check the presence with
+ *
+ * @return {boolean} Return true when the given label is also in the issue labels
+ */
+export function isLabeled(
+  issue: Readonly<Issue>,
+  label: Readonly<string>
+): boolean {
+  return !!issue.labels.find((issueLabel: Readonly<Label>): boolean => {
+    return cleanLabel(label) === cleanLabel(issueLabel.name);
+  });
+}
+
+function cleanLabel(label: Readonly<string>): string {
+  return deburr(label.toLowerCase());
+}

src/functions/labels-to-list.spec.ts

@@ -0,0 +1,141 @@
+import {labelsToList} from './labels-to-list';
+
+describe('labelsToList()', (): void => {
+  let labels: string;
+
+  describe('when the given labels is empty', (): void => {
+    beforeEach((): void => {
+      labels = '';
+    });
+
+    it('should return an empty list of labels', (): void => {
+      expect.assertions(1);
+
+      const result = labelsToList(labels);
+
+      expect(result).toStrictEqual([]);
+    });
+  });
+
+  describe('when the given labels is a simple label', (): void => {
+    beforeEach((): void => {
+      labels = 'label';
+    });
+
+    it('should return a list of one label', (): void => {
+      expect.assertions(1);
+
+      const result = labelsToList(labels);
+
+      expect(result).toStrictEqual(['label']);
+    });
+  });
+
+  describe('when the given labels is a label with extra spaces before and after', (): void => {
+    beforeEach((): void => {
+      labels = '   label   ';
+    });
+
+    it('should return a list of one label and remove all spaces before and after', (): void => {
+      expect.assertions(1);
+
+      const result = labelsToList(labels);
+
+      expect(result).toStrictEqual(['label']);
+    });
+  });
+
+  describe('when the given labels is a kebab case label', (): void => {
+    beforeEach((): void => {
+      labels = 'kebab-case-label';
+    });
+
+    it('should return a list of one label', (): void => {
+      expect.assertions(1);
+
+      const result = labelsToList(labels);
+
+      expect(result).toStrictEqual(['kebab-case-label']);
+    });
+  });
+
+  describe('when the given labels is two kebab case labels separated with a comma', (): void => {
+    beforeEach((): void => {
+      labels = 'kebab-case-label-1,kebab-case-label-2';
+    });
+
+    it('should return a list of two labels', (): void => {
+      expect.assertions(1);
+
+      const result = labelsToList(labels);
+
+      expect(result).toStrictEqual([
+        'kebab-case-label-1',
+        'kebab-case-label-2'
+      ]);
+    });
+  });
+
+  describe('when the given labels is a multiple word label', (): void => {
+    beforeEach((): void => {
+      labels = 'label like a sentence';
+    });
+
+    it('should return a list of one label', (): void => {
+      expect.assertions(1);
+
+      const result = labelsToList(labels);
+
+      expect(result).toStrictEqual(['label like a sentence']);
+    });
+  });
+
+  describe('when the given labels is two multiple word labels separated with a comma', (): void => {
+    beforeEach((): void => {
+      labels = 'label like a sentence, another label like a sentence';
+    });
+
+    it('should return a list of two labels', (): void => {
+      expect.assertions(1);
+
+      const result = labelsToList(labels);
+
+      expect(result).toStrictEqual([
+        'label like a sentence',
+        'another label like a sentence'
+      ]);
+    });
+  });
+
+  describe('when the given labels is a multiple word label with %20 spaces', (): void => {
+    beforeEach((): void => {
+      labels = 'label%20like%20a%20sentence';
+    });
+
+    it('should return a list of one label', (): void => {
+      expect.assertions(1);
+
+      const result = labelsToList(labels);
+
+      expect(result).toStrictEqual(['label%20like%20a%20sentence']);
+    });
+  });
+
+  describe('when the given labels is two multiple word labels with %20 spaces separated with a comma', (): void => {
+    beforeEach((): void => {
+      labels =
+        'label%20like%20a%20sentence,another%20label%20like%20a%20sentence';
+    });
+
+    it('should return a list of two labels', (): void => {
+      expect.assertions(1);
+
+      const result = labelsToList(labels);
+
+      expect(result).toStrictEqual([
+        'label%20like%20a%20sentence',
+        'another%20label%20like%20a%20sentence'
+      ]);
+    });
+  });
+});

src/functions/labels-to-list.ts

@@ -0,0 +1,23 @@
+/**
+ * @description
+ * Transform a string of comma separated labels
+ * to an array of labels
+ *
+ * @example
+ * labelsToList('label') => ['label']
+ * labelsToList('label,label') => ['label', 'label']
+ * labelsToList('kebab-label') => ['kebab-label']
+ * labelsToList('kebab%20label') => ['kebab%20label']
+ * labelsToList('label with words') => ['label with words']
+ *
+ * @param {Readonly<string>} labels A string of comma separated labels
+ *
+ * @return {string[]} A list of labels
+ */
+export function labelsToList(labels: Readonly<string>): string[] {
+  if (!labels.length) {
+    return [];
+  }
+
+  return labels.split(',').map(l => l.trim());
+}