Merge pull request #691 from akv-platform/v4-general-refactoring

Labeler general refactoring (ver. 4)

.licenses/npm/lodash.isequal.dep.yml

@@ -0,0 +1,58 @@
+---
+name: lodash.isequal
+version: 4.5.0
+type: npm
+summary: The Lodash method `_.isEqual` exported as a module.
+homepage: https://lodash.com/
+license: mit
+licenses:
+- sources: LICENSE
+  text: |
+    Copyright JS Foundation and other contributors <https://js.foundation/>
+
+    Based on Underscore.js, copyright Jeremy Ashkenas,
+    DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
+
+    This software consists of voluntary contributions made by many
+    individuals. For exact contribution history, see the revision history
+    available at https://github.com/lodash/lodash
+
+    The following license applies to all parts of this software except as
+    documented below:
+
+    ====
+
+    Permission is hereby granted, free of charge, to any person obtaining
+    a copy of this software and associated documentation files (the
+    "Software"), to deal in the Software without restriction, including
+    without limitation the rights to use, copy, modify, merge, publish,
+    distribute, sublicense, and/or sell copies of the Software, and to
+    permit persons to whom the Software is furnished to do so, subject to
+    the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    ====
+
+    Copyright and related rights for sample code are waived via CC0. Sample
+    code is defined as all source code displayed within the prose of the
+    documentation.
+
+    CC0: http://creativecommons.org/publicdomain/zero/1.0/
+
+    ====
+
+    Files located in the node_modules and vendor directories are externally
+    maintained libraries used by this software which have their own
+    licenses; we recommend you read them, as their terms may differ from the
+    terms above.
+notices: []

package-lock.json

@@ -13,11 +13,13 @@
         "@actions/github": "^5.1.1",
         "@octokit/plugin-retry": "^5.0.5",
         "js-yaml": "^4.1.0",
+        "lodash.isequal": "^4.5.0",
         "minimatch": "^9.0.3"
       },
       "devDependencies": {
         "@types/jest": "^27.4.1",
         "@types/js-yaml": "^4.0.6",
+        "@types/lodash.isequal": "^4.5.6",
         "@types/minimatch": "^5.1.2",
         "@types/node": "^16.11.7",
         "@typescript-eslint/eslint-plugin": "^6.7.4",
@@ -1429,6 +1431,21 @@
       "integrity": "sha512-Hr5Jfhc9eYOQNPYO5WLDq/n4jqijdHNlDXjuAQkkt+mWdQR+XJToOHrsD4cPaMXpn6KO7y2+wM8AZEs8VpBLVA==",
       "dev": true
     },
+    "node_modules/@types/lodash": {
+      "version": "4.14.199",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.199.tgz",
+      "integrity": "sha512-Vrjz5N5Ia4SEzWWgIVwnHNEnb1UE1XMkvY5DGXrAeOGE9imk0hgTHh5GyDjLDJi9OTCn9oo9dXH1uToK1VRfrg==",
+      "dev": true
+    },
+    "node_modules/@types/lodash.isequal": {
+      "version": "4.5.6",
+      "resolved": "https://registry.npmjs.org/@types/lodash.isequal/-/lodash.isequal-4.5.6.tgz",
+      "integrity": "sha512-Ww4UGSe3DmtvLLJm2F16hDwEQSv7U0Rr8SujLUA2wHI2D2dm8kPu6Et+/y303LfjTIwSBKXB/YTUcAKpem/XEg==",
+      "dev": true,
+      "dependencies": {
+        "@types/lodash": "*"
+      }
+    },
     "node_modules/@types/minimatch": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-5.1.2.tgz",
@@ -4829,6 +4846,11 @@
       "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
+    "node_modules/lodash.isequal": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
+      "integrity": "sha512-pDo3lu8Jhfjqls6GkMgpahsF9kCyayhgykjyLMNFTKWrpVdAQtYyB4muAMWozBB4ig/dtWAmsMxLEI8wuz+DYQ=="
+    },
     "node_modules/lodash.memoize": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
@@ -7403,6 +7425,21 @@
       "integrity": "sha512-Hr5Jfhc9eYOQNPYO5WLDq/n4jqijdHNlDXjuAQkkt+mWdQR+XJToOHrsD4cPaMXpn6KO7y2+wM8AZEs8VpBLVA==",
       "dev": true
     },
+    "@types/lodash": {
+      "version": "4.14.199",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.199.tgz",
+      "integrity": "sha512-Vrjz5N5Ia4SEzWWgIVwnHNEnb1UE1XMkvY5DGXrAeOGE9imk0hgTHh5GyDjLDJi9OTCn9oo9dXH1uToK1VRfrg==",
+      "dev": true
+    },
+    "@types/lodash.isequal": {
+      "version": "4.5.6",
+      "resolved": "https://registry.npmjs.org/@types/lodash.isequal/-/lodash.isequal-4.5.6.tgz",
+      "integrity": "sha512-Ww4UGSe3DmtvLLJm2F16hDwEQSv7U0Rr8SujLUA2wHI2D2dm8kPu6Et+/y303LfjTIwSBKXB/YTUcAKpem/XEg==",
+      "dev": true,
+      "requires": {
+        "@types/lodash": "*"
+      }
+    },
     "@types/minimatch": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-5.1.2.tgz",
@@ -9882,6 +9919,11 @@
       "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
+    "lodash.isequal": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
+      "integrity": "sha512-pDo3lu8Jhfjqls6GkMgpahsF9kCyayhgykjyLMNFTKWrpVdAQtYyB4muAMWozBB4ig/dtWAmsMxLEI8wuz+DYQ=="
+    },
     "lodash.memoize": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",

package.json

@@ -28,11 +28,13 @@
     "@actions/github": "^5.1.1",
     "@octokit/plugin-retry": "^5.0.5",
     "js-yaml": "^4.1.0",
+    "lodash.isequal": "^4.5.0",
     "minimatch": "^9.0.3"
   },
   "devDependencies": {
     "@types/jest": "^27.4.1",
     "@types/js-yaml": "^4.0.6",
+    "@types/lodash.isequal": "^4.5.6",
     "@types/minimatch": "^5.1.2",
     "@types/node": "^16.11.7",
     "@typescript-eslint/eslint-plugin": "^6.7.4",

src/api/get-changed-files.ts

@@ -0,0 +1,24 @@
+import * as core from '@actions/core';
+import * as github from '@actions/github';
+import {ClientType} from './types';
+
+export const getChangedFiles = async (
+  client: ClientType,
+  prNumber: number
+): Promise<string[]> => {
+  const listFilesOptions = client.rest.pulls.listFiles.endpoint.merge({
+    owner: github.context.repo.owner,
+    repo: github.context.repo.repo,
+    pull_number: prNumber
+  });
+
+  const listFilesResponse = await client.paginate(listFilesOptions);
+  const changedFiles = listFilesResponse.map((f: any) => f.filename);
+
+  core.debug('found changed files:');
+  for (const file of changedFiles) {
+    core.debug('  ' + file);
+  }
+
+  return changedFiles;
+};

src/api/get-changed-pull-requests.ts

@@ -0,0 +1,38 @@
+import * as core from '@actions/core';
+import * as github from '@actions/github';
+import {getChangedFiles} from './get-changed-files';
+import {ClientType} from './types';
+
+export async function* getPullRequests(
+  client: ClientType,
+  prNumbers: number[]
+) {
+  for (const prNumber of prNumbers) {
+    core.debug(`looking for pr #${prNumber}`);
+    let prData: any;
+    try {
+      const result = await client.rest.pulls.get({
+        owner: github.context.repo.owner,
+        repo: github.context.repo.repo,
+        pull_number: prNumber
+      });
+      prData = result.data;
+    } catch (error: any) {
+      core.warning(`Could not find pull request #${prNumber}, skipping`);
+      continue;
+    }
+
+    core.debug(`fetching changed files for pr #${prNumber}`);
+    const changedFiles: string[] = await getChangedFiles(client, prNumber);
+    if (!changedFiles.length) {
+      core.warning(`Pull request #${prNumber} has no changed files, skipping`);
+      continue;
+    }
+
+    yield {
+      data: prData,
+      number: prNumber,
+      changedFiles
+    };
+  }
+}

src/api/get-content.ts

@@ -0,0 +1,16 @@
+import * as github from '@actions/github';
+import {ClientType} from './types';
+
+export const getContent = async (
+  client: ClientType,
+  repoPath: string
+): Promise<string> => {
+  const response: any = await client.rest.repos.getContent({
+    owner: github.context.repo.owner,
+    repo: github.context.repo.repo,
+    path: repoPath,
+    ref: github.context.sha
+  });
+
+  return Buffer.from(response.data.content, response.data.encoding).toString();
+};

src/api/get-label-globs.ts

@@ -0,0 +1,70 @@
+import * as core from '@actions/core';
+import * as yaml from 'js-yaml';
+import fs from 'fs';
+import {ClientType} from './types';
+import {getContent} from './get-content';
+
+export interface MatchConfig {
+  all?: string[];
+  any?: string[];
+}
+
+export type StringOrMatchConfig = string | MatchConfig;
+
+export const getLabelGlobs = (
+  client: ClientType,
+  configurationPath: string
+): Promise<Map<string, StringOrMatchConfig[]>> =>
+  Promise.resolve()
+    .then(() => {
+      if (!fs.existsSync(configurationPath)) {
+        core.info(
+          `The configuration file (path: ${configurationPath}) was not found locally, fetching via the api`
+        );
+
+        return getContent(client, configurationPath);
+      }
+
+      core.info(
+        `The configuration file (path: ${configurationPath}) was found locally, reading from the file`
+      );
+
+      return fs.readFileSync(configurationPath, {
+        encoding: 'utf8'
+      });
+    })
+    .catch(error => {
+      if (error.name == 'HttpError' || error.name == 'NotFound') {
+        core.warning(
+          `The config file was not found at ${configurationPath}. Make sure it exists and that this action has the correct access rights.`
+        );
+      }
+      return Promise.reject(error);
+    })
+    .then(configuration => {
+      // loads (hopefully) a `{[label:string]: string | StringOrMatchConfig[]}`, but is `any`:
+      const configObject: any = yaml.load(configuration);
+
+      // transform `any` => `Map<string,StringOrMatchConfig[]>` or throw if yaml is malformed:
+      return getLabelGlobMapFromObject(configObject);
+    });
+
+function getLabelGlobMapFromObject(
+  configObject: any
+): Map<string, StringOrMatchConfig[]> {
+  const labelGlobs: Map<string, StringOrMatchConfig[]> = new Map();
+
+  for (const label in configObject) {
+    if (typeof configObject[label] === 'string') {
+      labelGlobs.set(label, [configObject[label]]);
+    } else if (configObject[label] instanceof Array) {
+      labelGlobs.set(label, configObject[label]);
+    } else {
+      throw Error(
+        `found unexpected type for label ${label} (should be string or array of globs)`
+      );
+    }
+  }
+
+  return labelGlobs;
+}

src/api/index.ts

@@ -0,0 +1,6 @@
+export * from './get-changed-files';
+export * from './get-changed-pull-requests';
+export * from './get-content';
+export * from './get-label-globs';
+export * from './set-labels';
+export * from './types';

src/api/set-labels.ts

@@ -0,0 +1,15 @@
+import * as github from '@actions/github';
+import {ClientType} from './types';
+
+export const setLabels = async (
+  client: ClientType,
+  prNumber: number,
+  labels: string[]
+) => {
+  await client.rest.issues.setLabels({
+    owner: github.context.repo.owner,
+    repo: github.context.repo.repo,
+    issue_number: prNumber,
+    labels: labels
+  });
+};

src/api/types.ts

@@ -0,0 +1,2 @@
+import * as github from '@actions/github';
+export type ClientType = ReturnType<typeof github.getOctokit>;

src/get-inputs/get-inputs.ts

@@ -0,0 +1,10 @@
+import * as core from '@actions/core';
+import {getPrNumbers} from './get-pr-numbers';
+
+export const getInputs = () => ({
+  token: core.getInput('repo-token'),
+  configPath: core.getInput('configuration-path', {required: true}),
+  syncLabels: !!core.getInput('sync-labels'),
+  dot: core.getBooleanInput('dot'),
+  prNumbers: getPrNumbers()
+});

src/get-inputs/get-pr-numbers.ts

@@ -0,0 +1,28 @@
+import * as core from '@actions/core';
+import * as github from '@actions/github';
+
+const getPrNumberFromContext = () =>
+  github.context.payload.pull_request?.number;
+
+export const getPrNumbers = (): number[] => {
+  const prInput = core.getMultilineInput('pr-number');
+
+  if (!prInput?.length) {
+    return [getPrNumberFromContext()].filter(Boolean) as number[];
+  }
+
+  const result: number[] = [];
+
+  for (const line of prInput) {
+    const prNumber = parseInt(line, 10);
+
+    if (isNaN(prNumber) && prNumber <= 0) {
+      core.warning(`'${prNumber}' is not a valid pull request number`);
+      continue;
+    }
+
+    result.push(prNumber);
+  }
+
+  return result;
+};

src/get-inputs/index.ts

@@ -0,0 +1 @@
+export * from './get-inputs';

src/labeler.ts

@@ -1,9 +1,11 @@
 import * as core from '@actions/core';
 import * as github from '@actions/github';
 import * as pluginRetry from '@octokit/plugin-retry';
-import * as yaml from 'js-yaml';
-import fs from 'fs';
 import {Minimatch} from 'minimatch';
+import * as api from './api';
+import isEqual from 'lodash.isequal';
+import {printPattern} from './utils';
+import {getInputs} from './get-inputs';
 
 interface MatchConfig {
   all?: string[];
@@ -16,217 +18,83 @@ type ClientType = ReturnType<typeof github.getOctokit>;
 // GitHub Issues cannot have more than 100 labels
 const GITHUB_MAX_LABELS = 100;
 
-export async function run() {
-  try {
-    const token = core.getInput('repo-token');
-    const configPath = core.getInput('configuration-path', {required: true});
-    const syncLabels = !!core.getInput('sync-labels');
-    const dot = core.getBooleanInput('dot');
+export const run = () =>
+  labeler().catch(error => {
+    core.error(error);
+    core.setFailed(error.message);
+  });
+
+async function labeler() {
+  const {token, configPath, syncLabels, dot, prNumbers} = getInputs();
+
+  if (!prNumbers.length) {
+    core.warning('Could not get pull request number(s), exiting');
+    return;
+  }
+
+  const client: ClientType = github.getOctokit(token, {}, pluginRetry.retry);
+
+  const pullRequests = api.getPullRequests(client, prNumbers);
+
+  for await (const pullRequest of pullRequests) {
+    const labelGlobs: Map<string, StringOrMatchConfig[]> =
+      await api.getLabelGlobs(client, configPath);
+    const preexistingLabels = pullRequest.data.labels.map(l => l.name);
+    const allLabels: Set<string> = new Set<string>(preexistingLabels);
+
+    for (const [label, globs] of labelGlobs.entries()) {
+      core.debug(`processing ${label}`);
+      if (checkGlobs(pullRequest.changedFiles, globs, dot)) {
+        allLabels.add(label);
+      } else if (syncLabels) {
+        allLabels.delete(label);
+      }
+    }
+
+    const labelsToAdd = [...allLabels].slice(0, GITHUB_MAX_LABELS);
+    const excessLabels = [...allLabels].slice(GITHUB_MAX_LABELS);
+
+    let newLabels: string[] = [];
+
+    try {
+      if (!isEqual(labelsToAdd, preexistingLabels)) {
+        await api.setLabels(client, pullRequest.number, labelsToAdd);
+        newLabels = labelsToAdd.filter(
+          label => !preexistingLabels.includes(label)
+        );
+      }
+    } catch (error: any) {
+      if (
+        error.name !== 'HttpError' ||
+        error.message !== 'Resource not accessible by integration'
+      ) {
+        throw error;
+      }
+
+      core.warning(
+        `The action requires write permission to add labels to pull requests. For more information please refer to the action documentation: https://github.com/actions/labeler#permissions`,
+        {
+          title: `${process.env['GITHUB_ACTION_REPOSITORY']} running under '${github.context.eventName}' is misconfigured`
+        }
+      );
+
+      core.setFailed(error.message);
 
-    const prNumbers = getPrNumbers();
-    if (!prNumbers.length) {
-      core.warning('Could not get pull request number(s), exiting');
       return;
     }
 
-    const client: ClientType = github.getOctokit(token, {}, pluginRetry.retry);
+    core.setOutput('new-labels', newLabels.join(','));
+    core.setOutput('all-labels', labelsToAdd.join(','));
 
-    for (const prNumber of prNumbers) {
-      core.debug(`looking for pr #${prNumber}`);
-      let pullRequest: any;
-      try {
-        const result = await client.rest.pulls.get({
-          owner: github.context.repo.owner,
-          repo: github.context.repo.repo,
-          pull_number: prNumber
-        });
-        pullRequest = result.data;
-      } catch (error: any) {
-        core.warning(`Could not find pull request #${prNumber}, skipping`);
-        continue;
-      }
-
-      core.debug(`fetching changed files for pr #${prNumber}`);
-      const changedFiles: string[] = await getChangedFiles(client, prNumber);
-      if (!changedFiles.length) {
-        core.warning(
-          `Pull request #${prNumber} has no changed files, skipping`
-        );
-        continue;
-      }
-
-      const labelGlobs: Map<string, StringOrMatchConfig[]> =
-        await getLabelGlobs(client, configPath);
-
-      const preexistingLabels = pullRequest.labels.map(l => l.name);
-      const allLabels: Set<string> = new Set<string>(preexistingLabels);
-
-      for (const [label, globs] of labelGlobs.entries()) {
-        core.debug(`processing ${label}`);
-        if (checkGlobs(changedFiles, globs, dot)) {
-          allLabels.add(label);
-        } else if (syncLabels) {
-          allLabels.delete(label);
-        }
-      }
-
-      const labelsToAdd = [...allLabels].slice(0, GITHUB_MAX_LABELS);
-      const excessLabels = [...allLabels].slice(GITHUB_MAX_LABELS);
-
-      try {
-        let newLabels: string[] = [];
-
-        if (!isListEqual(labelsToAdd, preexistingLabels)) {
-          await setLabels(client, prNumber, labelsToAdd);
-          newLabels = labelsToAdd.filter(l => !preexistingLabels.includes(l));
-        }
-
-        core.setOutput('new-labels', newLabels.join(','));
-        core.setOutput('all-labels', labelsToAdd.join(','));
-
-        if (excessLabels.length) {
-          core.warning(
-            `Maximum of ${GITHUB_MAX_LABELS} labels allowed. Excess labels: ${excessLabels.join(
-              ', '
-            )}`,
-            {title: 'Label limit for a PR exceeded'}
-          );
-        }
-      } catch (error: any) {
-        if (
-          error.name === 'HttpError' &&
-          error.message === 'Resource not accessible by integration'
-        ) {
-          core.warning(
-            `The action requires write permission to add labels to pull requests. For more information please refer to the action documentation: https://github.com/actions/labeler#permissions`,
-            {
-              title: `${process.env['GITHUB_ACTION_REPOSITORY']} running under '${github.context.eventName}' is misconfigured`
-            }
-          );
-          core.setFailed(error.message);
-        } else {
-          throw error;
-        }
-      }
-    }
-  } catch (error: any) {
-    core.error(error);
-    core.setFailed(error.message);
-  }
-}
-
-function getPrNumbers(): number[] {
-  const pullRequestNumbers = core.getMultilineInput('pr-number');
-  if (pullRequestNumbers && pullRequestNumbers.length) {
-    const prNumbers: number[] = [];
-
-    for (const prNumber of pullRequestNumbers) {
-      const prNumberInt = parseInt(prNumber, 10);
-      if (isNaN(prNumberInt) || prNumberInt <= 0) {
-        core.warning(`'${prNumber}' is not a valid pull request number`);
-      } else {
-        prNumbers.push(prNumberInt);
-      }
-    }
-
-    return prNumbers;
-  }
-
-  const pullRequest = github.context.payload.pull_request;
-  if (!pullRequest) {
-    return [];
-  }
-
-  return [pullRequest.number];
-}
-
-async function getChangedFiles(
-  client: ClientType,
-  prNumber: number
-): Promise<string[]> {
-  const listFilesOptions = client.rest.pulls.listFiles.endpoint.merge({
-    owner: github.context.repo.owner,
-    repo: github.context.repo.repo,
-    pull_number: prNumber
-  });
-
-  const listFilesResponse = await client.paginate(listFilesOptions);
-  const changedFiles = listFilesResponse.map((f: any) => f.filename);
-
-  core.debug('found changed files:');
-  for (const file of changedFiles) {
-    core.debug('  ' + file);
-  }
-
-  return changedFiles;
-}
-
-async function getLabelGlobs(
-  client: ClientType,
-  configurationPath: string
-): Promise<Map<string, StringOrMatchConfig[]>> {
-  let configurationContent: string;
-  try {
-    if (!fs.existsSync(configurationPath)) {
-      core.info(
-        `The configuration file (path: ${configurationPath}) was not found locally, fetching via the api`
-      );
-      configurationContent = await fetchContent(client, configurationPath);
-    } else {
-      core.info(
-        `The configuration file (path: ${configurationPath}) was found locally, reading from the file`
-      );
-      configurationContent = fs.readFileSync(configurationPath, {
-        encoding: 'utf8'
-      });
-    }
-  } catch (e: any) {
-    if (e.name == 'HttpError' || e.name == 'NotFound') {
+    if (excessLabels.length) {
       core.warning(
-        `The config file was not found at ${configurationPath}. Make sure it exists and that this action has the correct access rights.`
-      );
-    }
-    throw e;
-  }
-
-  // loads (hopefully) a `{[label:string]: string | StringOrMatchConfig[]}`, but is `any`:
-  const configObject: any = yaml.load(configurationContent);
-
-  // transform `any` => `Map<string,StringOrMatchConfig[]>` or throw if yaml is malformed:
-  return getLabelGlobMapFromObject(configObject);
-}
-
-async function fetchContent(
-  client: ClientType,
-  repoPath: string
-): Promise<string> {
-  const response: any = await client.rest.repos.getContent({
-    owner: github.context.repo.owner,
-    repo: github.context.repo.repo,
-    path: repoPath,
-    ref: github.context.sha
-  });
-
-  return Buffer.from(response.data.content, response.data.encoding).toString();
-}
-
-function getLabelGlobMapFromObject(
-  configObject: any
-): Map<string, StringOrMatchConfig[]> {
-  const labelGlobs: Map<string, StringOrMatchConfig[]> = new Map();
-  for (const label in configObject) {
-    if (typeof configObject[label] === 'string') {
-      labelGlobs.set(label, [configObject[label]]);
-    } else if (configObject[label] instanceof Array) {
-      labelGlobs.set(label, configObject[label]);
-    } else {
-      throw Error(
-        `found unexpected type for label ${label} (should be string or array of globs)`
+        `Maximum of ${GITHUB_MAX_LABELS} labels allowed. Excess labels: ${excessLabels.join(
+          ', '
+        )}`,
+        {title: 'Label limit for a PR exceeded'}
       );
     }
   }
-
-  return labelGlobs;
 }
 
 function toMatchConfig(config: StringOrMatchConfig): MatchConfig {
@@ -239,10 +107,6 @@ function toMatchConfig(config: StringOrMatchConfig): MatchConfig {
   return config;
 }
 
-function printPattern(matcher: Minimatch): string {
-  return (matcher.negate ? '!' : '') + matcher.pattern;
-}
-
 export function checkGlobs(
   changedFiles: string[],
   globs: StringOrMatchConfig[],
@@ -329,20 +193,3 @@ function checkMatch(
 
   return true;
 }
-
-function isListEqual(listA: string[], listB: string[]): boolean {
-  return listA.length === listB.length && listA.every(el => listB.includes(el));
-}
-
-async function setLabels(
-  client: ClientType,
-  prNumber: number,
-  labels: string[]
-) {
-  await client.rest.issues.setLabels({
-    owner: github.context.repo.owner,
-    repo: github.context.repo.repo,
-    issue_number: prNumber,
-    labels: labels
-  });
-}

src/utils/index.ts

@@ -0,0 +1 @@
+export * from './print-pattern';

src/utils/print-pattern.ts

@@ -0,0 +1,5 @@
+import {Minimatch} from 'minimatch';
+
+export const printPattern = (matcher: Minimatch): string => {
+  return (matcher.negate ? '!' : '') + matcher.pattern;
+};