some cleanup

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@squeebot/core",
-  "version": "3.1.1",
+  "version": "3.2.0",
   "description": "Squeebot v3 core for the execution environment",
   "main": "lib/index.js",
   "module": "lib/",

src/channel/index.ts

@@ -95,13 +95,8 @@ export class ChannelManager {
     }
   }
 
-  public getChannelByName(name: string): IChannel | null {
-    for (const chan of this.channels) {
-      if (chan.name === name) {
-        return chan;
-      }
-    }
-    return null;
+  public getChannelByName(name: string): IChannel | undefined {
+    return this.channels.find(c => c.name === name);
   }
 
   public addChannel(chan: IChannel): IChannel {

src/plugin/manager.ts

@@ -11,7 +11,7 @@ import { NPMExecutor } from '../npm/executor';
 
 import { logger } from '../core/logger';
 
-export function requireNoCache(file: string): object | null {
+export function requireNoCache(file: string): object | undefined {
   const fullPath = path.resolve(file);
   const mod = require(fullPath);
   if (require.cache && require.cache[fullPath]) {
@@ -34,28 +34,19 @@ export class PluginManager {
     this.addEvents();
   }
 
-  public getAvailableByName(name: string): IPluginManifest | null {
-    for (const pl of this.availablePlugins) {
-      if (pl.name === name) {
-        return pl;
-      }
-    }
-    return null;
+  public getAvailableByName(name: string): IPluginManifest | undefined {
+    return this.availablePlugins.find(p => p.name === name);
   }
 
-  public getLoadedByName(name: string): IPlugin | null {
+  public getLoadedByName(name: string): IPlugin | undefined {
     if (this.plugins.has(name)) {
       return this.plugins.get(name) as IPlugin;
     }
-    return null;
+    return;
   }
 
   public getLoaded(): IPlugin[] {
-    const list = [];
-    for (const pl of this.plugins.values()) {
-      list.push(pl);
-    }
-    return list;
+    return Array.from(this.plugins.values());
   }
 
   public addAvailable(manifest: IPluginManifest | IPluginManifest[]): boolean {

src/plugin/repository/manager.ts

@@ -17,25 +17,14 @@ export class RepositoryManager {
 
   constructor(private env: IEnvironment, private plugins: PluginManager) {}
 
-  public repoProvidesPlugin(repo: IRepository, mf: IPluginManifest): IRepoPluginDef | null {
-    for (const plugin of repo.plugins) {
-      if (plugin.name === mf.name && mf.repository === repo.name) {
-        return plugin;
-      }
+  public repoProvidesPlugin(repo: IRepository, mf: IPluginManifest): IRepoPluginDef | undefined {
+    return repo.plugins.find(plugin => plugin.name === mf.name && repo.name === mf.repository);
   }
 
-    return null;
-  }
-
-  public findRepoForPlugin(pname: string): IRepository | null {
-    for (const [name, repo] of this.repositories) {
-      for (const plugin of repo.plugins) {
-        if (plugin.name === pname) {
-          return repo;
-        }
-      }
-    }
-    return null;
+  public findRepoForPlugin(pname: string): IRepository | undefined {
+    return Array.from(this.repositories.values()).find(repo =>
+      repo.plugins.find(plugin => plugin.name === pname) !== undefined
+    );
   }
 
   public getRepoByName(name: string): IRepository | undefined {
@@ -43,11 +32,7 @@ export class RepositoryManager {
   }
 
   public getAll(): IRepository[] {
-    const list = [];
-    for (const irep of this.repositories.values()) {
-      list.push(irep);
-    }
-    return list;
+    return Array.from(this.repositories.values());
   }
 
   public async installPlugin(name: string): Promise<IPluginManifest> {
@@ -192,18 +177,13 @@ export class RepositoryManager {
 
     // Checking for version differences in the plugins
     // Get locally installed plugins
-    const needsUpdates: IPluginManifest[] = [];
-    for (const avail of this.plugins.availablePlugins) {
+    return this.plugins.availablePlugins.filter(avail => {
       const repoPlugin = this.repoProvidesPlugin(oprep, avail);
-      if (repoPlugin) {
-        if (semver.gt(repoPlugin.version, avail.version)) {
-          // Plugin needs update
-          needsUpdates.push(avail);
+      if (!repoPlugin) {
+        return false;
       }
-      }
-    }
-
-    return needsUpdates;
+      return semver.gt(repoPlugin.version, avail.version);
+    });
   }
 
   public async updateRepository(repo: IRepository): Promise<IRepository> {

src/util/run.ts

@@ -8,7 +8,7 @@ export interface IProcessData {
 }
 
 export async function spawnProcess(execp: string, args: any[], env: IEnvironment): Promise<IProcessData> {
-  return new Promise((resolve, reject): void => {
+  return new Promise((resolve): void => {
     const process = spawn(execp, args, { cwd: env.path });
     const stdout: string[] = [];
     const stderr: string[] = [];
@@ -29,8 +29,8 @@ export async function spawnProcess(execp: string, args: any[], env: IEnvironment
 }
 
 export async function execProcess(execp: string, env: IEnvironment): Promise<IProcessData> {
-  return new Promise((resolve, reject): void => {
-    const cprog = exec(execp, (error: any, stdout: any, stderr: any): void => resolve({
+  return new Promise((resolve): void => {
+    exec(execp, (error: any, stdout: any, stderr: any): void => resolve({
       code: error.code, stderr, stdout,
     }));
   });