- introduce capability for custom placeholders also to the global template

- introduce new convenient functions to handle this

README.md

@@ -366,7 +366,7 @@ Table of supported placeholders allowed to be used in the `template` and `empty_
 | `${{UNCATEGORIZED_COUNT}}` | The count of PRs and changes which were not categorized. No label overlapping with category labels |           |
 | `${{OPEN_COUNT}}`          | The count of open PRs. Will only be fetched if `includeOpen` is configured.                        |           |
 | `${{IGNORED_COUNT}}`       | The count of PRs and changes which were specifically ignored from the changelog.                   |           |
-| `${{DAYS_SINCE}}`          | Days between the 2 releases. Requires `fetchReleaseInformation` to be enabled.                     | *         |
+| `${{DAYS_SINCE}}`          | Days between the 2 releases. Requires `fetchReleaseInformation` to be enabled.                     | x         |
 
 ### Configuration Specification
 

__tests__/tags.test.ts

@@ -1,5 +1,3 @@
-import {resolveConfiguration} from '../src/utils'
-import {ReleaseNotesBuilder} from '../src/releaseNotesBuilder'
 import { TagInfo, sortTags, filterTags } from '../src/tags';
 
 jest.setTimeout(180000)

__tests__/transform.test.ts

@@ -1,7 +1,7 @@
 import {buildChangelog} from '../src/transform'
 import {PullRequestInfo} from '../src/pullRequests'
 import moment from 'moment'
-import { DefaultConfiguration, Configuration } from '../src/configuration';
+import { DefaultConfiguration } from '../src/configuration';
 import { DefaultDiffInfo } from '../src/commits';
 
 jest.setTimeout(180000)

dist/index.js

@@ -217,7 +217,8 @@ exports.DefaultConfiguration = {
         filter: undefined,
         transformer: undefined // transforms the tag name using the regex, run after the filter
     },
-    base_branches: [] // target branches for the merged PR ignoring PRs with different target branch, by default it will get all PRs
+    base_branches: [],
+    custom_placeholders: []
 };
 
 
@@ -782,7 +783,7 @@ class ReleaseNotes {
             core.setOutput('commits', diffInfo.commits);
             if (mergedPullRequests.length === 0) {
                 core.warning(`⚠️ No pull requests found`);
-                return (0, transform_1.fillAdditionalPlaceholders)(this.options.configuration.empty_template || configuration_1.DefaultConfiguration.empty_template, this.options);
+                return (0, transform_1.replaceEmptyTemplate)(this.options.configuration.empty_template || configuration_1.DefaultConfiguration.empty_template, this.options);
             }
             core.startGroup('📦 Build changelog');
             const resultChangelog = (0, transform_1.buildChangelog)(diffInfo, mergedPullRequests, this.options);
@@ -1444,7 +1445,7 @@ var __importStar = (this && this.__importStar) || function (mod) {
     return result;
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.validateTransformer = exports.fillAdditionalPlaceholders = exports.buildChangelog = void 0;
+exports.validateTransformer = exports.replaceEmptyTemplate = exports.buildChangelog = void 0;
 const core = __importStar(__nccwpck_require__(2186));
 const configuration_1 = __nccwpck_require__(5527);
 const pullRequests_1 = __nccwpck_require__(4217);
@@ -1493,11 +1494,15 @@ function buildChangelog(diffInfo, prs, options) {
             }
         }
     }
+    const placeholders = new Map();
+    for (const ph of config.custom_placeholders || []) {
+        placeholders.set(ph.source, ph);
+    }
     const validatedTransformers = validateTransformers(config.transformers);
     const transformedMap = new Map();
     // convert PRs to their text representation
     for (const pr of prs) {
-        transformedMap.set(pr, transform(fillTemplate(pr, config.pr_template || configuration_1.DefaultConfiguration.pr_template), validatedTransformers));
+        transformedMap.set(pr, transform(fillTemplate(pr, config.pr_template || configuration_1.DefaultConfiguration.pr_template, placeholders), validatedTransformers));
     }
     core.info(`ℹ️ Used ${validatedTransformers.length} transformers to adjust message`);
     core.info(`✒️ Wrote messages for ${prs.length} pull requests`);
@@ -1620,74 +1625,98 @@ function buildChangelog(diffInfo, prs, options) {
     }
     core.info(`✒️ Wrote ${ignoredPrs.length} ignored pull requests down`);
     // fill template
-    let transformedChangelog = config.template || configuration_1.DefaultConfiguration.template;
+    const placeholderMap = new Map();
-    transformedChangelog = transformedChangelog.replace(/\${{CHANGELOG}}/g, changelog);
+    placeholderMap.set('CHANGELOG', changelog);
-    transformedChangelog = transformedChangelog.replace(/\${{UNCATEGORIZED}}/g, changelogUncategorized);
+    placeholderMap.set('UNCATEGORIZED', changelogUncategorized);
-    transformedChangelog = transformedChangelog.replace(/\${{OPEN}}/g, changelogOpen);
+    placeholderMap.set('OPEN', changelogOpen);
-    transformedChangelog = transformedChangelog.replace(/\${{IGNORED}}/g, changelogIgnored);
+    placeholderMap.set('IGNORED', changelogIgnored);
     // fill other placeholders
-    transformedChangelog = transformedChangelog.replace(/\${{CATEGORIZED_COUNT}}/g, categorizedPrs.length.toString());
+    placeholderMap.set('CATEGORIZED_COUNT', categorizedPrs.length.toString());
-    transformedChangelog = transformedChangelog.replace(/\${{UNCATEGORIZED_COUNT}}/g, uncategorizedPrs.length.toString());
+    placeholderMap.set('UNCATEGORIZED_COUNT', uncategorizedPrs.length.toString());
-    transformedChangelog = transformedChangelog.replace(/\${{OPEN_COUNT}}/g, openPrs.length.toString());
+    placeholderMap.set('OPEN_COUNT', openPrs.length.toString());
-    transformedChangelog = transformedChangelog.replace(/\${{IGNORED_COUNT}}/g, ignoredPrs.length.toString());
+    placeholderMap.set('IGNORED_COUNT', ignoredPrs.length.toString());
     // code change placeholders
-    transformedChangelog = transformedChangelog.replace(/\${{CHANGED_FILES}}/g, diffInfo.changedFiles.toString());
+    placeholderMap.set('CHANGED_FILES', diffInfo.changedFiles.toString());
-    transformedChangelog = transformedChangelog.replace(/\${{ADDITIONS}}/g, diffInfo.additions.toString());
+    placeholderMap.set('ADDITIONS', diffInfo.additions.toString());
-    transformedChangelog = transformedChangelog.replace(/\${{DELETIONS}}/g, diffInfo.deletions.toString());
+    placeholderMap.set('DELETIONS', diffInfo.deletions.toString());
-    transformedChangelog = transformedChangelog.replace(/\${{CHANGES}}/g, diffInfo.changes.toString());
+    placeholderMap.set('CHANGES', diffInfo.changes.toString());
-    transformedChangelog = transformedChangelog.replace(/\${{COMMITS}}/g, diffInfo.commits.toString());
+    placeholderMap.set('COMMITS', diffInfo.commits.toString());
-    transformedChangelog = fillAdditionalPlaceholders(transformedChangelog, options);
+    fillAdditionalPlaceholders(options, placeholderMap);
+    let transformedChangelog = config.template || configuration_1.DefaultConfiguration.template;
+    transformedChangelog = replacePlaceHolders(transformedChangelog, placeholderMap, placeholders);
     core.info(`ℹ️ Filled template`);
     return transformedChangelog;
 }
 exports.buildChangelog = buildChangelog;
-function fillAdditionalPlaceholders(text, options) {
+function replaceEmptyTemplate(template, options) {
+    const placeholders = new Map();
+    for (const ph of options.configuration.custom_placeholders || []) {
+        placeholders.set(ph.source, ph);
+    }
+    const placeholderMap = new Map();
+    fillAdditionalPlaceholders(options, placeholderMap);
+    return replacePlaceHolders(template, placeholderMap, placeholders);
+}
+exports.replaceEmptyTemplate = replaceEmptyTemplate;
+function fillAdditionalPlaceholders(options, placeholderMap) {
     var _a, _b;
-    let transformed = text;
     // repository placeholders
-    transformed = transformed.replace(/\${{OWNER}}/g, options.owner);
+    placeholderMap.set('OWNER', options.owner);
-    transformed = transformed.replace(/\${{REPO}}/g, options.repo);
+    placeholderMap.set('REPO', options.repo);
-    transformed = transformed.replace(/\${{FROM_TAG}}/g, options.fromTag.name);
+    placeholderMap.set('FROM_TAG', options.fromTag.name);
-    transformed = transformed.replace(/\${{FROM_TAG_DATE}}/g, ((_a = options.fromTag.date) === null || _a === void 0 ? void 0 : _a.toISOString()) || '');
+    placeholderMap.set('FROM_TAG_DATE', ((_a = options.fromTag.date) === null || _a === void 0 ? void 0 : _a.toISOString()) || '');
-    transformed = transformed.replace(/\${{TO_TAG}}/g, options.toTag.name);
+    placeholderMap.set('TO_TAG', options.toTag.name);
-    transformed = transformed.replace(/\${{TO_TAG_DATE}}/g, ((_b = options.toTag.date) === null || _b === void 0 ? void 0 : _b.toISOString()) || '');
+    placeholderMap.set('TO_TAG_DATE', ((_b = options.toTag.date) === null || _b === void 0 ? void 0 : _b.toISOString()) || '');
     const fromDate = options.fromTag.date;
     const toDate = options.toTag.date;
     if (fromDate !== undefined && toDate !== undefined) {
-        transformed = transformed.replace(/\${{DAYS_SINCE}}/g, toDate.diff(fromDate, 'days').toString() || '');
+        placeholderMap.set('DAYS_SINCE', toDate.diff(fromDate, 'days').toString() || '');
     }
     else {
-        transformed = transformed.replace(/\${{DAYS_SINCE}}/g, '');
+        placeholderMap.set('DAYS_SINCE', '');
     }
-    transformed = transformed.replace(/\${{RELEASE_DIFF}}/g, `https://github.com/${options.owner}/${options.repo}/compare/${options.fromTag.name}...${options.toTag.name}`);
+    placeholderMap.set('RELEASE_DIFF', `https://github.com/${options.owner}/${options.repo}/compare/${options.fromTag.name}...${options.toTag.name}`);
-    return transformed;
 }
-exports.fillAdditionalPlaceholders = fillAdditionalPlaceholders;
+function fillTemplate(pr, template, placeholders) {
-function haveCommonElements(arr1, arr2) {
-    return arr1.some(item => arr2.has(item));
-}
-function haveEveryElements(arr1, arr2) {
-    return arr1.every(item => arr2.has(item));
-}
-function fillTemplate(pr, template) {
     var _a, _b, _c, _d, _e, _f;
+    const placeholderMap = new Map();
+    placeholderMap.set('NUMBER', pr.number.toString());
+    placeholderMap.set('TITLE', pr.title);
+    placeholderMap.set('URL', pr.htmlURL);
+    placeholderMap.set('STATUS', pr.status);
+    placeholderMap.set('CREATED_AT', pr.createdAt.toISOString());
+    placeholderMap.set('MERGED_AT', ((_a = pr.mergedAt) === null || _a === void 0 ? void 0 : _a.toISOString()) || '');
+    placeholderMap.set('MERGE_SHA', pr.mergeCommitSha);
+    placeholderMap.set('AUTHOR', pr.author);
+    placeholderMap.set('LABELS', ((_c = (_b = [...pr.labels]) === null || _b === void 0 ? void 0 : _b.filter(l => !l.startsWith('--rcba-'))) === null || _c === void 0 ? void 0 : _c.join(', ')) || '');
+    placeholderMap.set('MILESTONE', pr.milestone || '');
+    placeholderMap.set('BODY', pr.body);
+    placeholderMap.set('ASSIGNEES', ((_d = pr.assignees) === null || _d === void 0 ? void 0 : _d.join(', ')) || '');
+    placeholderMap.set('REVIEWERS', ((_e = pr.requestedReviewers) === null || _e === void 0 ? void 0 : _e.join(', ')) || '');
+    placeholderMap.set('APPROVERS', ((_f = pr.approvedReviewers) === null || _f === void 0 ? void 0 : _f.join(', ')) || '');
+    placeholderMap.set('BRANCH', pr.branch || '');
+    placeholderMap.set('BASE_BRANCH', pr.baseBranch);
+    return replacePlaceHolders(template, placeholderMap, placeholders);
+}
+function replacePlaceHolders(template, placeholderMap, placeholders) {
     let transformed = template;
-    transformed = transformed.replace(/\${{NUMBER}}/g, pr.number.toString());
+    for (const [key, value] of placeholderMap) {
-    transformed = transformed.replace(/\${{TITLE}}/g, pr.title);
+        transformed = transformed.replaceAll(`\${{${key}}}`, value);
-    transformed = transformed.replace(/\${{URL}}/g, pr.htmlURL);
+        // replace custom placeholders
-    transformed = transformed.replace(/\${{STATUS}}/g, pr.status);
+        transformed = applyCustomPlaceholder(transformed, value, placeholders.get(key));
-    transformed = transformed.replace(/\${{CREATED_AT}}/g, pr.createdAt.toISOString());
+    }
-    transformed = transformed.replace(/\${{MERGED_AT}}/g, ((_a = pr.mergedAt) === null || _a === void 0 ? void 0 : _a.toISOString()) || '');
-    transformed = transformed.replace(/\${{MERGE_SHA}}/g, pr.mergeCommitSha);
-    transformed = transformed.replace(/\${{AUTHOR}}/g, pr.author);
-    transformed = transformed.replace(/\${{LABELS}}/g, ((_c = (_b = [...pr.labels]) === null || _b === void 0 ? void 0 : _b.filter(l => !l.startsWith('--rcba-'))) === null || _c === void 0 ? void 0 : _c.join(', ')) || '');
-    transformed = transformed.replace(/\${{MILESTONE}}/g, pr.milestone || '');
-    transformed = transformed.replace(/\${{BODY}}/g, pr.body);
-    transformed = transformed.replace(/\${{ASSIGNEES}}/g, ((_d = pr.assignees) === null || _d === void 0 ? void 0 : _d.join(', ')) || '');
-    transformed = transformed.replace(/\${{REVIEWERS}}/g, ((_e = pr.requestedReviewers) === null || _e === void 0 ? void 0 : _e.join(', ')) || '');
-    transformed = transformed.replace(/\${{APPROVERS}}/g, ((_f = pr.approvedReviewers) === null || _f === void 0 ? void 0 : _f.join(', ')) || '');
     return transformed;
 }
+function applyCustomPlaceholder(template, value, placeholder) {
+    if (placeholder) {
+        const transformer = validateTransformer(placeholder.transformer);
+        if (transformer === null || transformer === void 0 ? void 0 : transformer.pattern) {
+            const extractedValue = value.replace(transformer.pattern, transformer.target);
+            return template.replaceAll(`\${{${placeholder.name}}}`, extractedValue);
+        }
+    }
+    return template;
+}
 function transform(filled, transformers) {
     if (transformers.length === 0) {
         return filled;
@@ -1792,6 +1821,12 @@ function extractValuesFromString(value, extractor) {
     }
     return null;
 }
+function haveCommonElements(arr1, arr2) {
+    return arr1.some(item => arr2.has(item));
+}
+function haveEveryElements(arr1, arr2) {
+    return arr1.every(item => arr2.has(item));
+}
 
 
 /***/ }),

src/releaseNotes.ts

@@ -3,7 +3,7 @@ import {Commits, filterCommits, DiffInfo, DefaultDiffInfo} from './commits'
 import {Configuration, DefaultConfiguration} from './configuration'
 import {PullRequestInfo, PullRequests} from './pullRequests'
 import {Octokit} from '@octokit/rest'
-import {buildChangelog, fillAdditionalPlaceholders} from './transform'
+import {buildChangelog, replaceEmptyTemplate} from './transform'
 import {failOrError} from './utils'
 import {TagInfo} from './tags'
 
@@ -61,7 +61,7 @@ export class ReleaseNotes {
 
     if (mergedPullRequests.length === 0) {
       core.warning(`⚠️ No pull requests found`)
-      return fillAdditionalPlaceholders(
+      return replaceEmptyTemplate(
         this.options.configuration.empty_template || DefaultConfiguration.empty_template,
         this.options
       )

src/transform.ts

@@ -4,6 +4,14 @@ import {PullRequestInfo, sortPullRequests} from './pullRequests'
 import {ReleaseNotesOptions} from './releaseNotes'
 import {DiffInfo} from './commits'
 
+export interface RegexTransformer {
+  pattern: RegExp | null
+  target: string
+  onProperty?: ('title' | 'author' | 'milestone' | 'body' | 'status' | 'branch')[] | undefined
+  method?: 'replace' | 'match' | undefined
+  onEmpty?: string | undefined
+}
+
 export function buildChangelog(diffInfo: DiffInfo, prs: PullRequestInfo[], options: ReleaseNotesOptions): string {
   // sort to target order
   const config = options.configuration
@@ -51,9 +59,9 @@ export function buildChangelog(diffInfo: DiffInfo, prs: PullRequestInfo[], optio
     }
   }
 
-  const placeholderMap = new Map<string, Placeholder>()
+  const placeholders = new Map<string, Placeholder>()
   for (const ph of config.custom_placeholders || []) {
-    placeholderMap.set(ph.source, ph)
+    placeholders.set(ph.source, ph)
   }
 
   const validatedTransformers = validateTransformers(config.transformers)
@@ -63,7 +71,7 @@ export function buildChangelog(diffInfo: DiffInfo, prs: PullRequestInfo[], optio
     transformedMap.set(
       pr,
       transform(
-        fillTemplate(pr, config.pr_template || DefaultConfiguration.pr_template, placeholderMap),
+        fillTemplate(pr, config.pr_template || DefaultConfiguration.pr_template, placeholders),
         validatedTransformers
       )
     )
@@ -223,61 +231,63 @@ export function buildChangelog(diffInfo: DiffInfo, prs: PullRequestInfo[], optio
   core.info(`✒️ Wrote ${ignoredPrs.length} ignored pull requests down`)
 
   // fill template
-  let transformedChangelog = config.template || DefaultConfiguration.template
+  const placeholderMap = new Map<string, string>()
-  transformedChangelog = transformedChangelog.replace(/\${{CHANGELOG}}/g, changelog)
+  placeholderMap.set('CHANGELOG', changelog)
-  transformedChangelog = transformedChangelog.replace(/\${{UNCATEGORIZED}}/g, changelogUncategorized)
+  placeholderMap.set('UNCATEGORIZED', changelogUncategorized)
-  transformedChangelog = transformedChangelog.replace(/\${{OPEN}}/g, changelogOpen)
+  placeholderMap.set('OPEN', changelogOpen)
-  transformedChangelog = transformedChangelog.replace(/\${{IGNORED}}/g, changelogIgnored)
+  placeholderMap.set('IGNORED', changelogIgnored)
-
   // fill other placeholders
-  transformedChangelog = transformedChangelog.replace(/\${{CATEGORIZED_COUNT}}/g, categorizedPrs.length.toString())
+  placeholderMap.set('CATEGORIZED_COUNT', categorizedPrs.length.toString())
-  transformedChangelog = transformedChangelog.replace(/\${{UNCATEGORIZED_COUNT}}/g, uncategorizedPrs.length.toString())
+  placeholderMap.set('UNCATEGORIZED_COUNT', uncategorizedPrs.length.toString())
-  transformedChangelog = transformedChangelog.replace(/\${{OPEN_COUNT}}/g, openPrs.length.toString())
+  placeholderMap.set('OPEN_COUNT', openPrs.length.toString())
-  transformedChangelog = transformedChangelog.replace(/\${{IGNORED_COUNT}}/g, ignoredPrs.length.toString())
+  placeholderMap.set('IGNORED_COUNT', ignoredPrs.length.toString())
   // code change placeholders
-  transformedChangelog = transformedChangelog.replace(/\${{CHANGED_FILES}}/g, diffInfo.changedFiles.toString())
+  placeholderMap.set('CHANGED_FILES', diffInfo.changedFiles.toString())
-  transformedChangelog = transformedChangelog.replace(/\${{ADDITIONS}}/g, diffInfo.additions.toString())
+  placeholderMap.set('ADDITIONS', diffInfo.additions.toString())
-  transformedChangelog = transformedChangelog.replace(/\${{DELETIONS}}/g, diffInfo.deletions.toString())
+  placeholderMap.set('DELETIONS', diffInfo.deletions.toString())
-  transformedChangelog = transformedChangelog.replace(/\${{CHANGES}}/g, diffInfo.changes.toString())
+  placeholderMap.set('CHANGES', diffInfo.changes.toString())
-  transformedChangelog = transformedChangelog.replace(/\${{COMMITS}}/g, diffInfo.commits.toString())
+  placeholderMap.set('COMMITS', diffInfo.commits.toString())
-  transformedChangelog = fillAdditionalPlaceholders(transformedChangelog, options)
+  fillAdditionalPlaceholders(options, placeholderMap)
+
+  let transformedChangelog = config.template || DefaultConfiguration.template
+  transformedChangelog = replacePlaceHolders(transformedChangelog, placeholderMap, placeholders)
 
   core.info(`ℹ️ Filled template`)
   return transformedChangelog
 }
 
-export function fillAdditionalPlaceholders(text: string, options: ReleaseNotesOptions): string {
+export function replaceEmptyTemplate(template: string, options: ReleaseNotesOptions): string {
-  let transformed = text
+  const placeholders = new Map<string, Placeholder>()
+  for (const ph of options.configuration.custom_placeholders || []) {
+    placeholders.set(ph.source, ph)
+  }
+  const placeholderMap = new Map<string, string>()
+  fillAdditionalPlaceholders(options, placeholderMap)
+  return replacePlaceHolders(template, placeholderMap, placeholders)
+}
+
+function fillAdditionalPlaceholders(options: ReleaseNotesOptions, placeholderMap: Map<string, string>): void {
   // repository placeholders
-  transformed = transformed.replace(/\${{OWNER}}/g, options.owner)
+  placeholderMap.set('OWNER', options.owner)
-  transformed = transformed.replace(/\${{REPO}}/g, options.repo)
+  placeholderMap.set('REPO', options.repo)
-  transformed = transformed.replace(/\${{FROM_TAG}}/g, options.fromTag.name)
+  placeholderMap.set('FROM_TAG', options.fromTag.name)
-  transformed = transformed.replace(/\${{FROM_TAG_DATE}}/g, options.fromTag.date?.toISOString() || '')
+  placeholderMap.set('FROM_TAG_DATE', options.fromTag.date?.toISOString() || '')
-  transformed = transformed.replace(/\${{TO_TAG}}/g, options.toTag.name)
+  placeholderMap.set('TO_TAG', options.toTag.name)
-  transformed = transformed.replace(/\${{TO_TAG_DATE}}/g, options.toTag.date?.toISOString() || '')
+  placeholderMap.set('TO_TAG_DATE', options.toTag.date?.toISOString() || '')
   const fromDate = options.fromTag.date
   const toDate = options.toTag.date
   if (fromDate !== undefined && toDate !== undefined) {
-    transformed = transformed.replace(/\${{DAYS_SINCE}}/g, toDate.diff(fromDate, 'days').toString() || '')
+    placeholderMap.set('DAYS_SINCE', toDate.diff(fromDate, 'days').toString() || '')
   } else {
-    transformed = transformed.replace(/\${{DAYS_SINCE}}/g, '')
+    placeholderMap.set('DAYS_SINCE', '')
   }
-  transformed = transformed.replace(
+  placeholderMap.set(
-    /\${{RELEASE_DIFF}}/g,
+    'RELEASE_DIFF',
     `https://github.com/${options.owner}/${options.repo}/compare/${options.fromTag.name}...${options.toTag.name}`
   )
-  return transformed
 }
 
-function haveCommonElements(arr1: string[], arr2: Set<string>): Boolean {
+function fillTemplate(pr: PullRequestInfo, template: string, placeholders: Map<string, Placeholder>): string {
-  return arr1.some(item => arr2.has(item))
-}
-
-function haveEveryElements(arr1: string[], arr2: Set<string>): Boolean {
-  return arr1.every(item => arr2.has(item))
-}
-
-function fillTemplate(pr: PullRequestInfo, template: string, customPlaceholders: Map<string, Placeholder>): string {
   const placeholderMap = new Map<string, string>()
   placeholderMap.set('NUMBER', pr.number.toString())
   placeholderMap.set('TITLE', pr.title)
@@ -295,19 +305,25 @@ function fillTemplate(pr: PullRequestInfo, template: string, customPlaceholders:
   placeholderMap.set('APPROVERS', pr.approvedReviewers?.join(', ') || '')
   placeholderMap.set('BRANCH', pr.branch || '')
   placeholderMap.set('BASE_BRANCH', pr.baseBranch)
+  return replacePlaceHolders(template, placeholderMap, placeholders)
+}
 
+function replacePlaceHolders(
+  template: string,
+  placeholderMap: Map<string, string>,
+  placeholders: Map<string, Placeholder>
+): string {
   let transformed = template
   for (const [key, value] of placeholderMap) {
     transformed = transformed.replaceAll(`\${{${key}}}`, value)
 
     // replace custom placeholders
-    transformed = applyCustomPlaceholder(transformed, value, customPlaceholders.get(key))
+    transformed = applyCustomPlaceholder(transformed, value, placeholders.get(key))
   }
-
   return transformed
 }
 
-function applyCustomPlaceholder(template: string, value: string, placeholder: Placeholder | undefined) {
+function applyCustomPlaceholder(template: string, value: string, placeholder: Placeholder | undefined): string {
   if (placeholder) {
     const transformer = validateTransformer(placeholder.transformer)
     if (transformer?.pattern) {
@@ -427,10 +443,10 @@ function extractValuesFromString(value: string, extractor: RegexTransformer): st
   return null
 }
 
-export interface RegexTransformer {
+function haveCommonElements(arr1: string[], arr2: Set<string>): Boolean {
-  pattern: RegExp | null
+  return arr1.some(item => arr2.has(item))
-  target: string
+}
-  onProperty?: ('title' | 'author' | 'milestone' | 'body' | 'status' | 'branch')[] | undefined
+
-  method?: 'replace' | 'match' | undefined
+function haveEveryElements(arr1: string[], arr2: Set<string>): Boolean {
-  onEmpty?: string | undefined
+  return arr1.every(item => arr2.has(item))
 }