commitlint: add When enum

Author: tehraninasab

commitlint.config.ts

@@ -1,4 +1,4 @@
-import { Helpers } from "./commitlint/helpers";
+import { Helpers, When } from "./commitlint/helpers";
 import { Plugins } from "./commitlint/plugins";
 import { RuleConfigSeverity } from "@commitlint/types";
 
@@ -13,45 +13,48 @@ function notNullStringErrorMessage(stringType: string): string {
 module.exports = {
     parserPreset: "conventional-changelog-conventionalcommits",
     rules: {
-        "body-leading-blank": [RuleConfigSeverity.Error, "always"],
+        "body-leading-blank": [RuleConfigSeverity.Error, When.Always],
         "body-soft-max-line-length": [
             RuleConfigSeverity.Error,
-            "always",
+            When.Always,
             bodyMaxLineLength,
         ],
-        "body-paragraph-line-min-length": [RuleConfigSeverity.Error, "always"],
-        "empty-wip": [RuleConfigSeverity.Error, "always"],
-        "footer-leading-blank": [RuleConfigSeverity.Warning, "always"],
+        "body-paragraph-line-min-length": [
+            RuleConfigSeverity.Error,
+            When.Always,
+        ],
+        "empty-wip": [RuleConfigSeverity.Error, When.Always],
+        "footer-leading-blank": [RuleConfigSeverity.Warning, When.Always],
         "footer-max-line-length": [
             RuleConfigSeverity.Error,
-            "always",
+            When.Always,
             footerMaxLineLength,
         ],
-        "footer-notes-misplacement": [RuleConfigSeverity.Error, "always"],
-        "footer-refs-validity": [RuleConfigSeverity.Error, "always"],
+        "footer-notes-misplacement": [RuleConfigSeverity.Error, When.Always],
+        "footer-refs-validity": [RuleConfigSeverity.Error, When.Always],
         "header-max-length-with-suggestions": [
             RuleConfigSeverity.Error,
-            "always",
+            When.Always,
             headerMaxLineLength,
         ],
-        "subject-full-stop": [RuleConfigSeverity.Error, "never", "."],
-        "type-space-after-colon": [RuleConfigSeverity.Error, "always"],
-        "subject-lowercase": [RuleConfigSeverity.Error, "always"],
-        "body-prose": [RuleConfigSeverity.Error, "always"],
-        "type-space-after-comma": [RuleConfigSeverity.Error, "always"],
-        "trailing-whitespace": [RuleConfigSeverity.Error, "always"],
-        "prefer-slash-over-backslash": [RuleConfigSeverity.Error, "always"],
-        "type-space-before-paren": [RuleConfigSeverity.Error, "always"],
-        "type-with-square-brackets": [RuleConfigSeverity.Error, "always"],
-        "proper-issue-refs": [RuleConfigSeverity.Error, "always"],
-        "too-many-spaces": [RuleConfigSeverity.Error, "always"],
-        "commit-hash-alone": [RuleConfigSeverity.Error, "always"],
-        "title-uppercase": [RuleConfigSeverity.Error, "always"],
+        "subject-full-stop": [RuleConfigSeverity.Error, When.Never, "."],
+        "type-space-after-colon": [RuleConfigSeverity.Error, When.Always],
+        "subject-lowercase": [RuleConfigSeverity.Error, When.Always],
+        "body-prose": [RuleConfigSeverity.Error, When.Always],
+        "type-space-after-comma": [RuleConfigSeverity.Error, When.Always],
+        "trailing-whitespace": [RuleConfigSeverity.Error, When.Always],
+        "prefer-slash-over-backslash": [RuleConfigSeverity.Error, When.Always],
+        "type-space-before-paren": [RuleConfigSeverity.Error, When.Always],
+        "type-with-square-brackets": [RuleConfigSeverity.Error, When.Always],
+        "proper-issue-refs": [RuleConfigSeverity.Error, When.Always],
+        "too-many-spaces": [RuleConfigSeverity.Error, When.Always],
+        "commit-hash-alone": [RuleConfigSeverity.Error, When.Always],
+        "title-uppercase": [RuleConfigSeverity.Error, When.Always],
 
         // disabled because most of the time it doesn't work, due to https://github.com/conventional-changelog/commitlint/issues/3404
         // and anyway we were using this rule only as a warning, not an error (because a scope is not required, e.g. when too broad)
-        "type-empty": [RuleConfigSeverity.Disabled, "never"],
-        "default-revert-message": [RuleConfigSeverity.Error, "never"],
+        "type-empty": [RuleConfigSeverity.Disabled, When.Never],
+        "default-revert-message": [RuleConfigSeverity.Error, When.Never],
     },
 
     // Commitlint automatically ignores some kinds of commits like Revert commit messages.
@@ -156,8 +159,6 @@ module.exports = {
                     },
                     when: string
                 ) => {
-                    Helpers.assertWhen(when);
-
                     let bodyStr = Helpers.convertAnyToString(body, "body");
                     let headerStr = Helpers.assertNotNull(
                         Helpers.convertAnyToString(header, "header"),
@@ -166,7 +167,7 @@ module.exports = {
                     return Plugins.defaultRevertMessage(
                         headerStr,
                         bodyStr,
-                        when
+                        Helpers.assertWhen(when)
                     );
                 },
 

commitlint/helpers.ts

@@ -1,3 +1,8 @@
+export enum When {
+    Never = "never",
+    Always = "always",
+}
+
 export abstract class Helpers {
     public static errMessageSuffix =
         "\nFor reference, these are the guidelines that include our commit message conventions: https://github.com/nblockchain/conventions/blob/master/WorkflowGuidelines.md";
@@ -38,11 +43,12 @@ export abstract class Helpers {
     }
 
     public static assertWhen(when: string) {
-        if (when !== "never" && when !== "always") {
+        if (when !== When.Never && when !== When.Always) {
             throw new Error(
                 'Variable "when" should be either "never" or "always"'
             );
         }
+        return when as When;
     }
 
     public static assertCharacter(letter: string) {

commitlint/plugins.ts

@@ -1,5 +1,5 @@
 import { abbr } from "./abbreviations";
-import { Helpers } from "./helpers";
+import { Helpers, When } from "./helpers";
 
 export abstract class Plugins {
     public static bodyProse(rawStr: string) {
@@ -281,7 +281,7 @@ export abstract class Plugins {
     public static defaultRevertMessage(
         headerStr: string,
         bodyStr: string | null,
-        when: string
+        when: When
     ) {
         let offence = false;
         let isRevertCommitMessage = headerStr.toLowerCase().includes("revert");