Create new interfaces for MatchConfig

src/branch.ts

@@ -1,9 +1,14 @@
 import * as core from '@actions/core';
 import * as github from '@actions/github';
 
+export interface BranchMatchConfig {
+  headBranch?: string[];
+  baseBranch?: string[];
+}
+
 type BranchBase = 'base' | 'head';
 
-export function toMatchConfigWithBranches(config: any) {
+export function toBranchMatchConfig(config: any): BranchMatchConfig {
   if (!config['head-branch'] || config['base-branch']) {
     return config;
   }
@@ -27,12 +32,7 @@ export function toMatchConfigWithBranches(config: any) {
     }
   }
 
-  return {
-    ...config,
-    ['head-branch']: undefined,
-    ['base-branch']: undefined,
-    ...branchConfig
-  };
+  return branchConfig;
 }
 
 export function getBranchName(branchBase?: BranchBase): string | undefined {

src/labeler.ts

@@ -3,15 +3,19 @@ import * as github from '@actions/github';
 import * as yaml from 'js-yaml';
 import {Minimatch} from 'minimatch';
 
-import {checkBranch, toMatchConfigWithBranches} from './branch';
+import {checkBranch, toBranchMatchConfig, BranchMatchConfig} from './branch';
 
-interface MatchConfig {
+interface FilesChangedMatchConfig {
   all?: string[];
   any?: string[];
-  headBranch?: string[];
-  baseBranch?: string[];
+  filesChanged?: {
+    all?: string[];
+    any?: string[];
+  };
 }
 
+type MatchConfig = FilesChangedMatchConfig & BranchMatchConfig;
+
 type StringOrMatchConfig = string | MatchConfig;
 type ClientType = ReturnType<typeof github.getOctokit>;
 
@@ -152,7 +156,12 @@ function toMatchConfig(config: StringOrMatchConfig): MatchConfig {
     };
   }
 
-  return toMatchConfigWithBranches(config);
+  const branchConfig = toBranchMatchConfig(config);
+
+  return {
+    ...config,
+    ...branchConfig
+  };
 }
 
 function printPattern(matcher: Minimatch): string {