Method connect

tooling/scripts/sidebar-vim-smoke.mjs:110–120

()

class Cdp {
  constructor(url) { this.url = url; this.id = 1; this.pending = new Map(); this.listeners = new Map() }
  connect() {
    return new Promise((res, rej) => {
      this.ws = new WebSocket(this.url)
      this.ws.on('open', res); this.ws.on('error', rej)
      this.ws.on('message', (raw) => {
        const m = JSON.parse(String(raw))
        if (m.id && this.pending.has(m.id)) { const { resolve, reject } = this.pending.get(m.id); this.pending.delete(m.id); m.error ? reject(new Error(m.error.message)) : resolve(m.result ?? {}) }
        else if (m.method) for (const l of this.listeners.get(m.method) ?? []) l(m.params ?? {})
      })
    })
  }
  send(method, params = {}) { const id = this.id++; return new Promise((res, rej) => { this.pending.set(id, { resolve: res, reject: rej }); this.ws.send(JSON.stringify({ id, method, params })) }) }
  on(method, l) { const a = this.listeners.get(method) ?? []; a.push(l); this.listeners.set(method, a) }
  close() { this.ws?.terminate?.(); this.ws?.close() }