gatsby/cache-dir/commonjs/server-utils/writable-as-promise.js

Blazing fast modern site generator for React

"use strict";

exports.__esModule = true;
exports.WritableAsPromise = void 0;
var _stream = require("stream");
class WritableAsPromise extends _stream.Writable {
  constructor() {
    super();
    this._output = ``;
    this._deferred = {
      promise: null,
      resolve: null,
      reject: null
    };
    this._deferred.promise = new Promise((resolve, reject) => {
      this._deferred.resolve = resolve;
      this._deferred.reject = reject;
    });
  }
  _write(chunk, _, next) {
    this._output += chunk.toString();
    next();
  }
  _destroy(error, next) {
    if (error instanceof Error) {
      this._deferred.reject(error);
    } else {
      next();
    }
  }
  end() {
    this._deferred.resolve(this._output);
    this.destroy();
  }

  // disguise us as a promise
  then(resolve, reject) {
    return this._deferred.promise.then(resolve, reject);
  }
}
exports.WritableAsPromise = WritableAsPromise;
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