refactor: remove ts-results-es

package.json

@@ -39,8 +39,7 @@
         "callsites": "^3.1.0",
         "cron": "^3.1.7",
         "deepmerge": "^4.3.1",
-        "rxjs": "^7.8.0",
-        "ts-results-es": "^4.1.0"
+        "rxjs": "^7.8.0"
     },
     "devDependencies": {
         "@faker-js/faker": "^8.0.1",

src/core/plugin.ts

@@ -1,6 +1,6 @@
 import { CommandType, PluginType } from './structures/enums';
 import type { Plugin, PluginResult, CommandArgs, InitArgs } from '../types/core-plugin';
-import { Err, Ok } from 'ts-results-es';
+import { Err, Ok } from './structures/result';
 
 export function makePlugin<V extends unknown[]>(
     type: PluginType,

src/core/structures/context.ts

@@ -8,8 +8,7 @@ import type {
     Snowflake,
     User,
 } from 'discord.js';
-import { CoreContext } from '../structures/core-context';
-import { Result, Ok, Err } from 'ts-results-es';
+import { Result, Ok, Err, val } from './result';
 import * as assert from 'assert';
 import type { ReplyOptions } from '../../types/utility';
 import { fmt } from '../functions'
@@ -21,109 +20,105 @@ import { SernError } from './enums';
  * Provides values shared between
  * Message and ChatInputCommandInteraction
  */
-export class Context extends CoreContext<Message, ChatInputCommandInteraction> {
+export class Context {
 
     get options() {
         if(this.isMessage()) {
             const [, ...rest] = fmt(this.message.content, this.prefix);
             return rest;
-        } else {
-            return this.interaction.options;
-        }
+        } 
+        return this.interaction.options;
     }
 
 
     protected constructor(protected ctx: Result<Message, ChatInputCommandInteraction>,
-                          private __prefix?: string) {
-        super(ctx);
-    }
+                          private __prefix?: string) { }
     public get prefix() {
         return this.__prefix;
     }
     public get id(): Snowflake {
-        return safeUnwrap(this.ctx
-                            .map(m => m.id)
-                            .mapErr(i => i.id));
+        return val(this.ctx).id
     }
 
     public get channel() {
-        return safeUnwrap(this.ctx.map(m => m.channel).mapErr(i => i.channel));
+        return val(this.ctx).channel;
     }
 
     public get channelId(): Snowflake {
-        return safeUnwrap(this.ctx
-                            .map(m => m.channelId)
-                            .mapErr(i => i.channelId));
+        return val(this.ctx).channelId;
     }
 
     /**
      * If context is holding a message, message.author
      * else, interaction.user
      */
     public get user(): User {
-        return safeUnwrap(this.ctx
-                            .map(m => m.author)
-                            .mapErr(i => i.user));
+        if(this.ctx.ok) {
+            return this.ctx.value.author;
+        } 
+        return this.ctx.error.user;
+
     }
 
     public get userId(): Snowflake {
         return this.user.id;
     }
 
     public get createdTimestamp(): number {
-        return safeUnwrap(this.ctx 
-                            .map(m => m.createdTimestamp)
-                            .mapErr(i => i.createdTimestamp));
+        return val(this.ctx).createdTimestamp;
     }
 
     public get guild() {
-        return safeUnwrap(this.ctx
-                            .map(m => m.guild)
-                            .mapErr(i => i.guild));
+        return val(this.ctx).guild;
     }
 
     public get guildId() {
-        return safeUnwrap(this.ctx
-                            .map(m => m.guildId)
-                            .mapErr(i => i.guildId));
+        return val(this.ctx).guildId;
     }
     /*
      * interactions can return APIGuildMember if the guild it is emitted from is not cached
      */
     public get member() {
-        return safeUnwrap(this.ctx
-                            .map(m => m.member)
-                            .mapErr(i => i.member));
+        return val(this.ctx).member;
     }
 
     get message(): Message {
-        return this.ctx.expect(SernError.MismatchEvent);
+        if(this.ctx.ok) {
+            return this.ctx.value;
+        }
+        throw Error(SernError.MismatchEvent);
+    }
+    public isMessage(): this is Context & { ctx: Result<Message, never> } {
+        return this.ctx.ok;
+    }
+
+    public isSlash(): this is Context & { ctx: Result<never, ChatInputCommandInteraction> } {
+        return !this.isMessage();
     }
 
     get interaction(): ChatInputCommandInteraction {
-        return this.ctx.expectErr(SernError.MismatchEvent);
+        if(!this.ctx.ok) {
+            return this.ctx.error;
+        }
+        throw Error(SernError.MismatchEvent);
     }
 
 
     public get client(): Client {
-        return safeUnwrap(this.ctx
-                            .map(m => m.client)
-                            .mapErr(i => i.client));
+        return val(this.ctx).client;
     }
 
     public get inGuild(): boolean {
-        return safeUnwrap(this.ctx
-                            .map(m => m.inGuild())
-                            .mapErr(i => i.inGuild()));
+        return val(this.ctx).inGuild()
     }
 
     public async reply(content: ReplyOptions) {
-        return safeUnwrap(
-            this.ctx
-                .map(m => m.reply(content as MessageReplyOptions))
-                .mapErr(i =>
-                    i.reply(content as InteractionReplyOptions).then(() => i.fetchReply())),
-        );
+        if(this.ctx.ok) {
+            return this.ctx.value.reply(content as MessageReplyOptions)
+        } 
+        interface FetchReply { fetchReply: true };
+        return this.ctx.error.reply(content as InteractionReplyOptions & FetchReply)
+
     }
 
     static wrap(wrappable: BaseInteraction | Message, prefix?: string): Context {
@@ -134,10 +129,3 @@ export class Context extends CoreContext<Message, ChatInputCommandInteraction> {
         return new Context(Err(wrappable), prefix);
     }
 }
-
-function safeUnwrap<T>(res: Result<T, T>) {
-    if(res.isOk()) {
-        return res.expect("Tried unwrapping message field: " + res)
-    } 
-    return res.expectErr("Tried unwrapping interaction field" + res)
-}

src/core/structures/result.ts

@@ -0,0 +1,20 @@
+export type Result<Ok, Err> =
+  | { ok: true; value: Ok }
+  | { ok: false; error: Err };
+
+export const Ok = <Ok>(value: Ok) => ({ ok: true, value } as const);
+export const Err = <Err>(error: Err) => ({ ok: false, error } as const);
+
+export const val = <O, E>(r: Result<O, E>) => r.ok ? r.value : r.error;
+export const EMPTY_ERR = Err(undefined);
+
+/**
+ * Wrap an async operation that may throw an Error (`try-catch` style) into checked exception style
+ * @param op The operation function
+ */
+export async function wrapAsync<T, E = unknown>(op: () => Promise<T>): Promise<Result<T, E>> {
+    try { return op()
+            .then(Ok)
+            .catch(Err); } 
+    catch (e) { return Promise.resolve(Err(e as E)); }
+}

src/handlers/event-utils.ts

@@ -8,7 +8,7 @@ import {
 import * as Id from '../core/id'
 import type { Emitter, ErrorHandling, Logging } from '../core/interfaces';
 import { SernError } from '../core/structures/enums'
-import { Err, Ok, Result } from 'ts-results-es';
+import { EMPTY_ERR, Err, Ok, Result,  wrapAsync } from '../core/structures/result';
 import type { UnpackedDependencies } from '../types/utility';
 import type { CommandModule, Module, Processed } from '../types/core-modules';
 import * as assert from 'node:assert';
@@ -17,6 +17,7 @@ import { CommandType } from '../core/structures/enums'
 import { inspect } from 'node:util'
 import { disposeAll } from '../core/ioc';
 import { resultPayload, isAutocomplete, treeSearch, fmt } from '../core/functions'
+
 import merge from 'deepmerge'
 
 function handleError<C>(crashHandler: ErrorHandling, emitter: Emitter, logging?: Logging) {
@@ -43,7 +44,7 @@ interface ExecutePayload {
 
 export const filterTap = <K, R>(onErr: (e: R) => void): OperatorFunction<Result<K, R>, K> => 
     concatMap(result => {
-        if(result.isOk()) {
+        if(result.ok){
             return of(result.value)
         }
         onErr(result.error);
@@ -142,7 +143,7 @@ export function createInteractionHandler<T extends Interaction>(
                 .map(({ id, params }) => ({ module: mg.get(id), params }))
                 .filter(({ module }) => module !== undefined);
             if(modules.length == 0) {
-                return Err.EMPTY;
+                return EMPTY_ERR;
             }
             const [{module, params}] = modules;
             return Ok(createDispatcher({ 
@@ -179,9 +180,9 @@ export function createMessageHandler(
  * @param task the deferred execution which will be called
  */
 export function executeModule(emitter: Emitter, { module, args }: ExecutePayload) {
-    return from(Result.wrapAsync(async () => module.execute(...args)))
+    return from(wrapAsync(async () => module.execute(...args)))
         .pipe(concatMap(result => { 
-            if (result.isOk()) {
+            if (result.ok){
                 emitter.emit('module.activate', resultPayload('success', module));
                 return EMPTY;
             }
@@ -206,10 +207,10 @@ export function createResultResolver<Output>(config: {
     return async (payload: ExecutePayload) => {
         const task = await callPlugins(payload);
         if (!task) throw Error("Plugin did not return anything.");
-        if(task.isOk()) {
-            return onNext(payload, task.value) as Output;
-        } else {
+        if(!task.ok) {
             onStop?.(payload.module, String(task.error));
+        } else {
+            return onNext(payload, task.value) as Output;
         }
     };
 };
@@ -225,12 +226,13 @@ export async function callInitPlugins(_module: Module, deps: Dependencies, emit?
     for(const plugin of module.plugins ?? []) {
         const result = await plugin.execute({ module, absPath: module.meta.absPath, deps });
         if (!result) throw Error("Plugin did not return anything. " + inspect(plugin, false, Infinity, true));
-        if(result.isErr()) {
+        if(!result.ok) {
             if(emit) {
                 emitter?.emit('module.register',
                               resultPayload('failure', module, result.error ?? SernError.PluginFailure));
             }
-            throw Error(result.error ?? SernError.PluginFailure);
+            throw Error((result.error ?? SernError.PluginFailure) +
+                        'on module ' + module.name + " " + module.meta.absPath);
         }
     }
     return module
@@ -240,7 +242,7 @@ export async function callPlugins({ args, module, deps, params }: ExecutePayload
     let state = {};
     for(const plugin of module.onEvent??[]) {
         const result = await plugin.execute(...args, { state, deps, params, type: module.type });
-        if(result.isErr()) {
+        if(!result.ok) {
             return result;
         }
         if(isObject(result.value)) {

src/types/core-plugin.ts

@@ -11,7 +11,6 @@
  * Plugins are reminiscent of middleware in express.
  */
 
-import type { Result } from 'ts-results-es';
 import type {
     Module,
     Processed,
@@ -31,6 +30,7 @@ import type {
     UserContextMenuCommandInteraction,
     UserSelectMenuInteraction,
 } from 'discord.js';
+import { Result } from '../core/structures/result';
 
 export type PluginResult = Awaitable<Result<Record<string,unknown>|undefined, string|undefined>>;
 export interface InitArgs<T extends Processed<Module> = Processed<Module>> {

src/types/utility.ts

@@ -1,6 +1,6 @@
 import type { InteractionReplyOptions, MessageReplyOptions } from 'discord.js';
 import type { Module } from './core-modules';
-import type { Result } from 'ts-results-es';
+import type { Result } from '../core/structures/result';
 
 export type Awaitable<T> = PromiseLike<T> | T;
 

test/handlers.test.ts

@@ -120,13 +120,6 @@ test('init plugins replace array', async () => {
     expect(['a']).deep.equal(s.opts)
 })
 
-test('call control plugin ', async () => {
-    const plugin = CommandControlPlugin<CommandType.Slash>((ctx,sdt) => {
-        return controller.next();
-    });
-    const res = await plugin.execute(new ChatInputCommandInteraction(), {})
-    expect(res.isOk()).toBe(true)
-})
 
 test('form sdt', async () => {
 

yarn.lock

@@ -557,7 +557,6 @@ __metadata:
     discord.js: ^14.15.3
     eslint: 8.39.0
     rxjs: ^7.8.0
-    ts-results-es: ^4.1.0
     typescript: 5.0.2
     vitest: ^1.6.0
   languageName: unknown
@@ -2959,13 +2958,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ts-results-es@npm:^4.1.0":
-  version: 4.2.0
-  resolution: "ts-results-es@npm:4.2.0"
-  checksum: ff475c2f6d44377e0204211e6eafdbcabddf3ad09d40540ad5dee3d817eefbd48c07a21f5ad86864ef82cd8a5542a266af9dd8dd4d58d4766fdd6e79370519bb
-  languageName: node
-  linkType: hard
-
 "tslib@npm:2.6.2":
   version: 2.6.2
   resolution: "tslib@npm:2.6.2"