astx/mjs/node/AstxWorker.mjs

super powerful structural search and replace for JavaScript and TypeScript to automate your refactoring

#!/usr/bin/env node
import { Worker } from 'worker_threads'
import emitted from 'p-event'
export default class AstxWorker {
  worker
  _seq = 0
  _running = false
  ended = false

  constructor() {
    this.startWorker()
  }

  async end() {
    if (this.ended) return
    this.ended = true
    const { worker } = this
    if (worker) {
      await worker.terminate()
      this.worker = undefined
    }
  }

  startWorker() {
    if (this.ended) return
    const worker = new Worker(new URL('./AstxWorkerEntry.mjs', import.meta.url))
    this.worker = worker
    worker.once('exit', async () => {
      this.worker = undefined
      if (this.ended) return
      await new Promise((r) => setTimeout(r, 1000))
      this.startWorker()
    })
  }

  get running() {
    return this.running
  }

  async getWorker() {
    while (!this.worker) {
      await new Promise((r) => setTimeout(r, 1000))
    }

    if (this.worker) return this.worker
    throw new Error('unexpected')
  }

  async runTransformOnFile({ file, transform, transformFile, config, signal }) {
    const worker = await this.getWorker()

    if (this._running) {
      throw new Error(`a transform is currently running`)
    }

    const seq = this._seq++

    try {
      var _on, _ref

      this._running = true
      signal === null || signal === void 0
        ? void 0
        : (_on = (_ref = signal).on) === null || _on === void 0
        ? void 0
        : _on.call(_ref, 'abort', () => {
            worker.postMessage({
              type: 'abort',
              seq,
            })
          })
      const promise = Promise.race([
        emitted(worker, 'message', {
          filter: (event) => event.seq === seq,
          rejectionEvents: ['error', 'exit'],
        }).catch((reason) =>
          typeof reason === 'number'
            ? `worker exited with code ${reason}`
            : reason
        ),
        ...(signal
          ? [
              emitted(signal, '', {
                rejectionEvents: ['abort'],
              }),
            ]
          : []),
      ])
      promise.catch(() => {
        // ignore
      })
      worker.postMessage({
        type: 'runTransformOnFile',
        seq,
        file,
        transform: transformFile ? undefined : transform,
        transformFile,
        ...(config && {
          config,
        }),
      })
      const message = await promise

      switch (message.type) {
        case 'error': {
          const error = new Error(message.error.message)
          error.stack = message.error.stack
          throw error
        }

        case 'transformResult': {
          var _result$reports

          const { result } = message

          if (
            (_result$reports = result.reports) !== null &&
            _result$reports !== void 0 &&
            _result$reports.length &&
            transform !== null &&
            transform !== void 0 &&
            transform.onReport
          ) {
            for (const report of result.reports) {
              transform.onReport({
                file,
                report,
              })
            }
          }

          return result
        }

        default: {
          throw new Error(`unknown message: ${JSON.stringify(message)}`)
        }
      }
    } finally {
      this._running = false
    }
  }
} //# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["Worker","emitted","AstxWorker","worker","_seq","_running","ended","constructor","startWorker","end","terminate","undefined","require","resolve","once","Promise","r","setTimeout","running","getWorker","Error","runTransformOnFile","file","transform","transformFile","config","signal","seq","on","postMessage","type","promise","race","filter","event","rejectionEvents","catch","reason","message","error","stack","result","reports","length","onReport","report","JSON","stringify"],"sources":["../../src/node/AstxWorker.ts"],"sourcesContent":["#!/usr/bin/env node\n\nimport { Worker } from 'worker_threads'\nimport { RunTransformOnFileOptions } from './runTransformOnFile'\nimport emitted from 'p-event'\nimport { IpcTransformResult } from './ipc'\n\nexport default class AstxWorker {\n  private worker: Worker | undefined\n  private _seq = 0\n  private _running = false\n  private ended = false\n\n  constructor() {\n    this.startWorker()\n  }\n\n  async end(): Promise<void> {\n    if (this.ended) return\n    this.ended = true\n    const { worker } = this\n    if (worker) {\n      await worker.terminate()\n      this.worker = undefined\n    }\n  }\n\n  private startWorker() {\n    if (this.ended) return\n    const worker = new Worker(require.resolve('./AstxWorkerEntry.babel.js'))\n    this.worker = worker\n    worker.once('exit', async () => {\n      this.worker = undefined\n      if (this.ended) return\n      await new Promise((r) => setTimeout(r, 1000))\n      this.startWorker()\n    })\n  }\n\n  get running(): boolean {\n    return this.running\n  }\n\n  private async getWorker(): Promise<Worker> {\n    while (!this.worker) {\n      await new Promise((r) => setTimeout(r, 1000))\n    }\n    if (this.worker) return this.worker\n    throw new Error('unexpected')\n  }\n\n  async runTransformOnFile({\n    file,\n    transform,\n    transformFile,\n    config,\n    signal,\n  }: RunTransformOnFileOptions): Promise<IpcTransformResult> {\n    const worker = await this.getWorker()\n\n    if (this._running) {\n      throw new Error(`a transform is currently running`)\n    }\n    const seq = this._seq++\n\n    try {\n      this._running = true\n      ;(signal as any)?.on?.('abort', () => {\n        worker.postMessage({ type: 'abort', seq })\n      })\n      const promise = Promise.race([\n        emitted(worker, 'message', {\n          filter: (event: any) => event.seq === seq,\n          rejectionEvents: ['error', 'exit'],\n        }).catch((reason) =>\n          typeof reason === 'number'\n            ? `worker exited with code ${reason}`\n            : reason\n        ),\n        ...(signal\n          ? [emitted(signal as any, '', { rejectionEvents: ['abort'] })]\n          : []),\n      ])\n      promise.catch(() => {\n        // ignore\n      })\n      worker.postMessage({\n        type: 'runTransformOnFile',\n        seq,\n        file,\n        transform: transformFile ? undefined : transform,\n        transformFile,\n        ...(config && { config }),\n      })\n      const message = await promise\n      switch (message.type) {\n        case 'error': {\n          const error = new Error(message.error.message)\n          error.stack = message.error.stack\n          throw error\n        }\n        case 'transformResult': {\n          const { result } = message\n          if (result.reports?.length && transform?.onReport) {\n            for (const report of result.reports) {\n              transform.onReport({ file, report })\n            }\n          }\n          return result\n        }\n        default: {\n          throw new Error(`unknown message: ${JSON.stringify(message)}`)\n        }\n      }\n    } finally {\n      this._running = false\n    }\n  }\n}\n"],"mappings":"AAAA;;AAEA,SAASA,MAAT,QAAuB,gBAAvB;;AAEA,OAAOC,OAAP,MAAoB,SAApB;;;AAGA,eAAe,MAAMC,UAAN,CAAiB;EACtBC,MAAM;EACNC,IAAI,GAAG,CAAH;EACJC,QAAQ,GAAG,KAAH;EACRC,KAAK,GAAG,KAAH;;EAEbC,WAAW,GAAG;IACZ,KAAKC,WAAL;EACD;;EAEQ,MAAHC,GAAG,GAAkB;IACzB,IAAI,KAAKH,KAAT,EAAgB;IAChB,KAAKA,KAAL,GAAa,IAAb;IACA,MAAM,EAAEH,MAAF,KAAa,IAAnB;IACA,IAAIA,MAAJ,EAAY;MACV,MAAMA,MAAM,CAACO,SAAP,EAAN;MACA,KAAKP,MAAL,GAAcQ,SAAd;IACD;EACF;;EAEOH,WAAW,GAAG;IACpB,IAAI,KAAKF,KAAT,EAAgB;IAChB,MAAMH,MAAM,GAAG,IAAIH,MAAJ,CAAWY,OAAO,CAACC,OAAR,CAAgB,4BAAhB,CAAX,CAAf;IACA,KAAKV,MAAL,GAAcA,MAAd;IACAA,MAAM,CAACW,IAAP,CAAY,MAAZ,EAAoB,YAAY;MAC9B,KAAKX,MAAL,GAAcQ,SAAd;MACA,IAAI,KAAKL,KAAT,EAAgB;MAChB,MAAM,IAAIS,OAAJ,CAAY,CAACC,CAAD,KAAOC,UAAU,CAACD,CAAD,EAAI,IAAJ,CAA7B,CAAN;MACA,KAAKR,WAAL;IACD,CALD;EAMD;;EAEU,IAAPU,OAAO,GAAY;IACrB,OAAO,KAAKA,OAAZ;EACD;;EAEsB,MAATC,SAAS,GAAoB;IACzC,OAAO,CAAC,KAAKhB,MAAb,EAAqB;MACnB,MAAM,IAAIY,OAAJ,CAAY,CAACC,CAAD,KAAOC,UAAU,CAACD,CAAD,EAAI,IAAJ,CAA7B,CAAN;IACD;IACD,IAAI,KAAKb,MAAT,EAAiB,OAAO,KAAKA,MAAZ;IACjB,MAAM,IAAIiB,KAAJ,CAAU,YAAV,CAAN;EACD;;EAEuB,MAAlBC,kBAAkB,CAAC;IACvBC,IADuB;IAEvBC,SAFuB;IAGvBC,aAHuB;IAIvBC,MAJuB;IAKvBC,MALuB,EAAD;EAMmC;IACzD,MAAMvB,MAAM,GAAG,MAAM,KAAKgB,SAAL,EAArB;;IAEA,IAAI,KAAKd,QAAT,EAAmB;MACjB,MAAM,IAAIe,KAAJ,CAAW,kCAAX,CAAN;IACD;IACD,MAAMO,GAAG,GAAG,KAAKvB,IAAL,EAAZ;;IAEA,IAAI;MACF,KAAKC,QAAL,GAAgB,IAAhB;MACEqB,MAAD,aAACA,MAAD,sCAACA,MAAD,EAAiBE,EAAjB,uDAAsB,OAAtB,EAA+B,MAAM;QACpCzB,MAAM,CAAC0B,WAAP,CAAmB,EAAEC,IAAI,EAAE,OAAR,EAAiBH,GAAjB,EAAnB;MACD,CAFA;MAGD,MAAMI,OAAO,GAAGhB,OAAO,CAACiB,IAAR,CAAa;MAC3B/B,OAAO,CAACE,MAAD,EAAS,SAAT,EAAoB;QACzB8B,MAAM,EAAE,CAACC,KAAD,KAAgBA,KAAK,CAACP,GAAN,KAAcA,GADb;QAEzBQ,eAAe,EAAE,CAAC,OAAD,EAAU,MAAV,CAFQ,EAApB,CAAP;MAGGC,KAHH,CAGS,CAACC,MAAD;MACP,OAAOA,MAAP,KAAkB,QAAlB;MACK,2BAA0BA,MAAO,EADtC;MAEIA,MANN,CAD2B;;MAS3B,IAAIX,MAAM;MACN,CAACzB,OAAO,CAACyB,MAAD,EAAgB,EAAhB,EAAoB,EAAES,eAAe,EAAE,CAAC,OAAD,CAAnB,EAApB,CAAR,CADM;MAEN,EAFJ,CAT2B,CAAb,CAAhB;;MAaAJ,OAAO,CAACK,KAAR,CAAc,MAAM;QAClB;MACD,CAFD;MAGAjC,MAAM,CAAC0B,WAAP,CAAmB;QACjBC,IAAI,EAAE,oBADW;QAEjBH,GAFiB;QAGjBL,IAHiB;QAIjBC,SAAS,EAAEC,aAAa,GAAGb,SAAH,GAAeY,SAJtB;QAKjBC,aALiB;QAMjB,IAAIC,MAAM,IAAI,EAAEA,MAAF,EAAd,CANiB,EAAnB;;MAQA,MAAMa,OAAO,GAAG,MAAMP,OAAtB;MACA,QAAQO,OAAO,CAACR,IAAhB;QACE,KAAK,OAAL,CAAc;YACZ,MAAMS,KAAK,GAAG,IAAInB,KAAJ,CAAUkB,OAAO,CAACC,KAAR,CAAcD,OAAxB,CAAd;YACAC,KAAK,CAACC,KAAN,GAAcF,OAAO,CAACC,KAAR,CAAcC,KAA5B;YACA,MAAMD,KAAN;UACD;QACD,KAAK,iBAAL,CAAwB;YACtB,MAAM,EAAEE,MAAF,KAAaH,OAAnB;YACA,IAAI,mBAAAG,MAAM,CAACC,OAAP,4DAAgBC,MAAhB,IAA0BpB,SAA1B,aAA0BA,SAA1B,eAA0BA,SAAS,CAAEqB,QAAzC,EAAmD;cACjD,KAAK,MAAMC,MAAX,IAAqBJ,MAAM,CAACC,OAA5B,EAAqC;gBACnCnB,SAAS,CAACqB,QAAV,CAAmB,EAAEtB,IAAF,EAAQuB,MAAR,EAAnB;cACD;YACF;YACD,OAAOJ,MAAP;UACD;QACD,QAAS;YACP,MAAM,IAAIrB,KAAJ,CAAW,oBAAmB0B,IAAI,CAACC,SAAL,CAAeT,OAAf,CAAwB,EAAtD,CAAN;UACD,CAjBH;;IAmBD,CAjDD,SAiDU;MACR,KAAKjC,QAAL,GAAgB,KAAhB;IACD;EACF,CA9G6B"}