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| import { z } from "zod"; | |
| import * as fs from "fs/promise"; | |
| export class LifeConfig<T extends z.ZodObject<any>> { | |
| bootstrapProcess: Promise<void>; | |
| watchingProcess: null | Promise<void> = null; | |
| store: null | z.infer<T> = null; | |
| ready = Promise.withResolvers<null>(); | |
| subs = new Set<(state: z.infer<T>) => void>(); | |
| constructor( | |
| private file: string | { toString(): string }, | |
| private schema: T, | |
| ) { | |
| this.bootstrapProcess = this.bootstrap(); | |
| } | |
| async bootstrap() { | |
| await this.load(); | |
| this.watchingProcess = this.startWatchFile(); | |
| } | |
| async startWatchFile() { | |
| for await (const event of fs.watch(new URL(`${this.file}`).pathname)) { | |
| await this.load(); | |
| } | |
| } | |
| async load() { | |
| const store = this.schema.parse( | |
| JSON.parse(await fs.readFile(new URL(`${this.file}`), "utf-8")), | |
| ); | |
| this.store = store; | |
| this.subs.forEach((cb) => cb(store)); | |
| this.ready.resolve(null); | |
| } | |
| async wait() { | |
| await this.bootstrapProcess; | |
| await this.ready.promise; | |
| } | |
| async setup(cb: (state: z.infer<T>) => void) { | |
| if (this.store) cb(this.store); | |
| this.subs.add(cb); | |
| return () => this.subs.delete(cb); | |
| } | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| import { z } from "zod"; | |
| import { LifeConfig } from "./life-config.ts" | |
| const lifeConfig = new LifeConfig( | |
| "config.json", | |
| z.object({ | |
| prefixLog: z.string(), | |
| }), | |
| ); | |
| await lifeConfig.wait(); | |
| let logger = (message: string) => comsole.log(`${lifeConfig.store.prefixLog} ${message}`); | |
| lifeConfig.setup(() => { | |
| logger = (message: string) => comsole.log(`${lifeConfig.store.prefixLog} ${message}`); | |
| }); |
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