rpc/.prettierrc.yaml

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+tabWidth: 4
+printWidth: 80
+singleQuote: true
+semi: false
+arrowParens: avoid
+endOfLine: auto

rpc/package.json

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+{
+    "name": "rpc",
+    "version": "0.1.0",
+    "main": "dist/index.js",
+    "types": "dist/src/index.d.ts",
+    "scripts": {
+        "watch": "tsc -w",
+        "build": "tsup",
+        "start": "npx ./dist create"
+    },
+    "files": [
+        "dist/**/*"
+    ],
+    "description": "CLI to scaffold a template project for RageFW",
+    "keywords": [],
+    "author": "rilaxik",
+    "license": "ISC",
+    "devDependencies": {
+        "prettier": "^3.3.2",
+        "typescript": "^5.4.5"
+    }
+}

rpc/src/events.ts

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+export const EVENT_LISTENER = '__rpc:listener'
+export const EVENT_RESPONSE = '__rpc:response'

rpc/src/index.ts

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+import { Environment, utils } from './utils'
+import { EVENT_LISTENER } from './events'
+
+import { client } from './modules/client'
+import { server } from './modules/server'
+
+const environment = utils.getEnvironment()
+
+const state = environment === Environment.CEF ? window : global
+
+class rpc {
+    constructor() {
+        if (environment === Environment.UNKNOWN) return
+
+        mp.events.add(EVENT_LISTENER, async (player: any, request: string) => {
+            switch (environment) {
+                case Environment.SERVER:
+                    await server.listenEvent(player, request)
+                    break
+
+                case Environment.CLIENT:
+                    request = player
+
+                    await client.listenEvent(request)
+                    break
+            }
+        })
+    }
+
+    public register<Callback extends any[] = unknown[], Return = unknown>(
+        eventName: string,
+        cb: (...args: Callback) => Return,
+    ) {
+        if (environment === Environment.UNKNOWN) return
+        state[eventName] = cb
+    }
+
+    public async callClient<Args extends any[] = unknown[], Return = unknown>(
+        player: any,
+        eventName: string,
+        ...args: Args
+    ): Promise<Return | unknown> {
+        if (environment === Environment.UNKNOWN) return
+        if (environment === Environment.SERVER) {
+            return client.executeClient(player, eventName, args)
+        }
+    }
+
+    public async callServer<Args extends any[] = unknown[], Return = unknown>(
+        eventName: string,
+        ...args: Args
+    ): Promise<Return | unknown> {
+        if (environment === Environment.UNKNOWN) return
+        if (environment === Environment.CLIENT) {
+            return server.executeServer(eventName, args)
+        }
+    }
+}
+
+const testRpc = new rpc()
+export { testRpc }

rpc/src/modules/client.ts

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+import { EVENT_LISTENER } from '../events'
+import { Wrapper } from './wrapper'
+import { RPCState } from '../utils'
+
+class Client extends Wrapper {
+    private sendResponseToServer(data: RPCState) {
+        const eventName = this._utils.generateResponseEventName(data.uuid)
+        const preparedData = this._utils.prepareForTransfer(data)
+        mp.events.callRemote(eventName, preparedData)
+    }
+
+    public async listenEvent(data: string) {
+        const rpcData = this._verifyEvent(data)
+
+        if (rpcData.knownError) {
+            this._triggerError(rpcData)
+            return
+        }
+
+        try {
+            const fnResponse = await this._state[rpcData.eventName](
+                ...rpcData.data,
+            )
+            const response = {
+                ...rpcData,
+                data: fnResponse,
+            }
+
+            this.sendResponseToServer(response)
+        } catch (e) {
+            this._triggerError(rpcData, e)
+        }
+    }
+
+    private handleClientServerReturn(
+        uuid: string,
+        resolve: (value: unknown) => void,
+        reject: (reason?: any) => void,
+    ) {
+        const responseEvent = this._utils.generateResponseEventName(uuid)
+        const timeoutDuration = 1000 * 10
+
+        const timeoutID = setTimeout(() => {
+            reject(new Error('Timeout ended'))
+            mp.events.remove(responseEvent)
+        }, timeoutDuration)
+
+        const handler = (_: any, response: string) => {
+            const { knownError, data } = this._utils.prepareForExecute(response)
+
+            if (knownError)
+                try {
+                    clearTimeout(timeoutID)
+                    reject(knownError)
+                    return
+                } catch (e) {}
+
+            resolve(data)
+            mp.events.remove(responseEvent)
+
+            try {
+                clearTimeout(timeoutID)
+            } catch (e) {}
+        }
+
+        mp.events.add(responseEvent, handler)
+    }
+
+    public async executeClient<
+        Args extends any[] = unknown[],
+        Return = unknown,
+    >(
+        player: any,
+        eventName: string,
+        ...args: Args
+    ): Promise<Return | unknown> {
+        return new Promise((resolve, reject) => {
+            const uuid = this._utils.generateUUID()
+
+            const data: RPCState = {
+                uuid,
+                eventName,
+                calledFrom: this._environment,
+                data: args,
+            }
+
+            player.call(EVENT_LISTENER, [this._utils.prepareForTransfer(data)])
+
+            this.handleClientServerReturn(uuid, resolve, reject)
+        })
+    }
+}
+
+export const client = new Client()

rpc/src/modules/server.ts

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+import { Wrapper } from './wrapper'
+import { RPCState, utils } from '../utils'
+import { EVENT_LISTENER } from '../events'
+
+class Server extends Wrapper {
+    private sendResponseToClient(player: any, data: RPCState) {
+        const eventName = this._utils.generateResponseEventName(data.uuid)
+        const preparedData = this._utils.prepareForTransfer(data)
+
+        player.call(eventName, [preparedData])
+    }
+
+    public async listenEvent(player: any, data: string) {
+        const rpcData = this._verifyEvent(data)
+
+        if (rpcData.knownError) {
+            this._triggerError(rpcData)
+            return
+        }
+
+        try {
+            const fnResponse = await this._state[rpcData.eventName](
+                ...rpcData.data,
+            )
+            const response = {
+                ...rpcData,
+                data: fnResponse,
+            }
+
+            this.sendResponseToClient(player, response)
+        } catch (e) {
+            this._triggerError(rpcData, e)
+        }
+    }
+
+    private handleServerClientReturn(
+        uuid: string,
+        resolve: (value: unknown) => void,
+        reject: (reason?: any) => void,
+    ) {
+        const responseEvent = this._utils.generateResponseEventName(uuid)
+        const timeoutDuration = 1000 * 10
+
+        const timeoutID = setTimeout(() => {
+            reject(new Error('Timeout ended'))
+            mp.events.remove(responseEvent)
+        }, timeoutDuration)
+
+        const handler = (response: string) => {
+            const { knownError, data } = this._utils.prepareForExecute(response)
+
+            if (knownError) {
+                try {
+                    clearTimeout(timeoutID)
+                    reject(knownError)
+                    return
+                } catch (e) {}
+            }
+
+            resolve(data)
+            mp.events.remove(responseEvent)
+
+            try {
+                clearTimeout(timeoutID)
+            } catch (e) {}
+        }
+
+        mp.events.add(responseEvent, handler)
+    }
+
+    public async executeServer<
+        Args extends any[] = unknown[],
+        Return = unknown,
+    >(eventName: string, ...args: Args): Promise<Return | unknown> {
+        return new Promise((resolve, reject) => {
+            const uuid = this._utils.generateUUID()
+
+            const data: RPCState = {
+                uuid,
+                eventName,
+                calledFrom: this._environment,
+                data: args,
+            }
+
+            mp.events.callRemote(
+                EVENT_LISTENER,
+                this._utils.prepareForTransfer(data),
+            )
+
+            this.handleServerClientReturn(uuid, resolve, reject)
+        })
+    }
+}
+
+export const server = new Server()

rpc/src/modules/wrapper.ts

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+import { Environment, Errors, RPCState, utils } from '../utils'
+
+export class Wrapper {
+    public _utils = utils
+    public _environment = utils.getEnvironment()
+    public _state = this._environment === Environment.CEF ? window : global
+
+    public _verifyEvent(data: string): RPCState {
+        const rpcData = utils.prepareForExecute(data)
+
+        if (!this._state[rpcData.eventName]) {
+            rpcData.knownError = Errors.EVENT_NOT_REGISTERED
+        }
+
+        return rpcData
+    }
+
+    public _triggerError(rpcData: RPCState, error?: any) {
+        const errorMessage = [
+            `${rpcData.knownError}`,
+            `Caller: ${rpcData.calledFrom}`,
+            `Receiver: ${this._environment}`,
+            `Event: ${rpcData.eventName}`,
+        ]
+
+        if (error) {
+            errorMessage.push(`Additional Info: ${error}`)
+        }
+
+        throw new Error(errorMessage.join(' | '))
+    }
+}

rpc/src/types.d.ts

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+declare const mp: any
+declare const console: any
+
+declare const setTimeout: (fn: Function, time: number) => number
+declare const clearTimeout: (id: number) => void
+
+declare const global: {
+    [p: string]: (...args: any[]) => unknown
+}
+
+declare const window: {
+    [p: string]: (...args: any[]) => unknown
+}

rpc/src/utils.ts

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+import { EVENT_RESPONSE } from './events'
+
+export enum Environment {
+    CEF = 'CEF',
+    CLIENT = 'CLIENT',
+    SERVER = 'SERVER',
+    UNKNOWN = 'UNKNOWN',
+}
+
+export enum Errors {
+    EVENT_NOT_REGISTERED = 'Event not registered',
+}
+
+export type RPCState = {
+    eventName: string
+    uuid: string
+    knownError?: string
+    data?: any
+    calledFrom: Environment
+}
+
+class Utils {
+    public getEnvironment(): Environment {
+        if (mp.joaat) return Environment.SERVER
+        if (mp.game && mp.game.joaat) return Environment.CLIENT
+        if ('mp' in window) return Environment.CEF
+        return Environment.UNKNOWN
+    }
+
+    public prepareForExecute(data: string): RPCState {
+        return JSON.parse(data)
+    }
+
+    public prepareForTransfer(data: RPCState): string {
+        return JSON.stringify(data)
+    }
+
+    public generateUUID(): string {
+        let uuid = '',
+            random
+
+        for (let i = 0; i < 32; i++) {
+            random = (Math.random() * 16) | 0
+
+            if (i === 8 || i === 12 || i === 16 || i === 20) {
+                uuid += '-'
+            }
+
+            uuid += (
+                i === 12 ? 4 : i === 16 ? (random & 3) | 8 : random
+            ).toString(16)
+        }
+
+        return uuid
+    }
+
+    public generateResponseEventName(uuid: string): string {
+        return `${EVENT_RESPONSE}_${uuid}`
+    }
+}
+
+export const utils = new Utils()

rpc/tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "es6",
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "lib": ["ES6"],
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true,
+
+    "outDir": "bin",
+    "esModuleInterop": true,
+
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noImplicitAny": true
+  },
+  "include": [
+    "src/**/*"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}

rpc/tsup.config.ts

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+import { defineConfig } from 'tsup'
+
+export default defineConfig({
+    entry: ['src/index.ts'],
+    outDir: './dist',
+    format: ['cjs'],
+    noExternal: ['rage-rpc'],
+    experimentalDts: true,
+    splitting: false,
+    sourcemap: false,
+    clean: true,
+})