electron-app/src/preload/call.ts

import { ipcRenderer } from "electron"

let count = 0
export function call(command: string, ...args: any[]): Promise<any> {
  return new Promise((resolve, reject) => {
    if (!command) {
      console.warn("命令不能为空")
      return
    }
    count++
    const timestamp = new Date().getTime()
    const key = timestamp + "-" + count
    let timeID: any = null
    ipcRenderer.once(key, fn)

    function fn(_, err: any, res: any) {
      clearTimeout(timeID)
      if (err) {
        reject(err)
        return
      }
      resolve(res)
    }

    ipcRenderer.send("command", key, command, ...args)

    // 超过5s就取消监听
    timeID = setTimeout(() => {
      reject(new Error(`超过5s未响应: ${command}`))
      ipcRenderer.removeListener(key, fn)
    }, 5000)
  })
}

export function callLong(command: string, ...args: any[]): Promise<any> {
  return new Promise((resolve, reject) => {
    if (!command) {
      console.warn("命令不能为空")
      return
    }
    count++
    const timestamp = new Date().getTime()
    const key = timestamp + "-" + count
    ipcRenderer.once(key, fn)

    function fn(_, err: any, res: any) {
      if (err) {
        reject(err)
        return
      }
      resolve(res)
    }

    ipcRenderer.send("command", key, command, ...args)
  })
}

export function callSync(command: string, ...args: any[]) {
  if (!command) {
    console.warn("命令不能为空")
    return
  }
  count++
  const timestamp = new Date().getTime()
  const key = timestamp + "-" + count
  const result = ipcRenderer.sendSync("command", key, command, ...args)
  if (!result) {
    return
  }
  return result
}