@lerna/publish/dist/libs/core/src/lib/profiler.js

Publish packages in the current project

var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var profiler_exports = {};
__export(profiler_exports, {
  Profiler: () => Profiler,
  generateProfileOutputPath: () => generateProfileOutputPath
});
module.exports = __toCommonJS(profiler_exports);
var import_fs_extra = __toESM(require("fs-extra"));
var import_npmlog = __toESM(require("npmlog"));
var import_upath = __toESM(require("upath"));
const hrtimeToMicroseconds = (hrtime) => {
  return (hrtime[0] * 1e9 + hrtime[1]) / 1e3;
};
const range = (len) => {
  return Array(len).fill().map((_, idx) => idx);
};
const getTimeBasedFilename = () => {
  const now = /* @__PURE__ */ new Date();
  const datetime = now.toISOString().split(".")[0];
  const datetimeNormalized = datetime.replace(/-|:/g, "");
  return `Lerna-Profile-${datetimeNormalized}.json`;
};
function generateProfileOutputPath(outputDirectory) {
  return import_upath.default.join(import_upath.default.resolve(outputDirectory || "."), getTimeBasedFilename());
}
class Profiler {
  events;
  logger;
  outputPath;
  threads;
  constructor({ concurrency, log = import_npmlog.default, outputDirectory }) {
    this.events = [];
    this.logger = log;
    this.outputPath = generateProfileOutputPath(outputDirectory);
    this.threads = range(concurrency);
  }
  run(fn, name) {
    let startTime;
    let threadId;
    return Promise.resolve().then(() => {
      startTime = process.hrtime();
      threadId = this.threads.shift();
    }).then(() => fn()).then((value) => {
      const duration = process.hrtime(startTime);
      const event = {
        name,
        ph: "X",
        ts: hrtimeToMicroseconds(startTime),
        pid: 1,
        tid: threadId,
        dur: hrtimeToMicroseconds(duration)
      };
      this.events.push(event);
      this.threads.unshift(threadId);
      this.threads.sort();
      return value;
    });
  }
  output() {
    return import_fs_extra.default.outputJson(this.outputPath, this.events).then(() => this.logger.info("profiler", `Performance profile saved to ${this.outputPath}`));
  }
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  Profiler,
  generateProfileOutputPath
});