create-expo-cljs-app/template/node_modules/metro-core/src/Logger.js

Create a react native application with Expo and Shadow-CLJS!

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 *
 * @format
 */
"use strict";

function ownKeys(object, enumerableOnly) {
  var keys = Object.keys(object);

  if (Object.getOwnPropertySymbols) {
    var symbols = Object.getOwnPropertySymbols(object);
    if (enumerableOnly)
      symbols = symbols.filter(function(sym) {
        return Object.getOwnPropertyDescriptor(object, sym).enumerable;
      });
    keys.push.apply(keys, symbols);
  }

  return keys;
}

function _objectSpread(target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i] != null ? arguments[i] : {};

    if (i % 2) {
      ownKeys(Object(source), true).forEach(function(key) {
        _defineProperty(target, key, source[key]);
      });
    } else if (Object.getOwnPropertyDescriptors) {
      Object.defineProperties(target, Object.getOwnPropertyDescriptors(source));
    } else {
      ownKeys(Object(source)).forEach(function(key) {
        Object.defineProperty(
          target,
          key,
          Object.getOwnPropertyDescriptor(source, key)
        );
      });
    }
  }

  return target;
}

function _defineProperty(obj, key, value) {
  if (key in obj) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
  } else {
    obj[key] = value;
  }

  return obj;
}

const os = require("os");

const path = require("path");

const _require = require("events"),
  EventEmitter = _require.EventEmitter;

const VERSION = require("../package.json").version;

const log_session = `${os.hostname()}-${Date.now()}`;
const eventEmitter = new EventEmitter();

function on(event, handler) {
  eventEmitter.on(event, handler);
}

function createEntry(data) {
  const logEntry =
    typeof data === "string"
      ? {
          log_entry_label: data
        }
      : data;
  const entryPoint = logEntry.entry_point;

  if (entryPoint) {
    logEntry.entry_point = path.relative(process.cwd(), entryPoint);
  }

  return _objectSpread(
    _objectSpread({}, logEntry),
    {},
    {
      log_session,
      metro_bundler_version: VERSION
    }
  );
}

function createActionStartEntry(data) {
  const logEntry =
    typeof data === "string"
      ? {
          action_name: data
        }
      : data;
  const action_name = logEntry.action_name;
  return createEntry(
    _objectSpread(
      _objectSpread({}, logEntry),
      {},
      {
        action_name,
        action_phase: "start",
        log_entry_label: action_name,
        start_timestamp: process.hrtime()
      }
    )
  );
}

function createActionEndEntry(logEntry) {
  const action_name = logEntry.action_name,
    action_phase = logEntry.action_phase,
    start_timestamp = logEntry.start_timestamp;

  if (action_phase !== "start" || !Array.isArray(start_timestamp)) {
    throw new Error("Action has not started or has already ended");
  }

  const timeDelta = process.hrtime(start_timestamp);
  const duration_ms = Math.round((timeDelta[0] * 1e9 + timeDelta[1]) / 1e6);
  return createEntry(
    _objectSpread(
      _objectSpread({}, logEntry),
      {},
      {
        action_name,
        action_phase: "end",
        duration_ms,

        /* $FlowFixMe(>=0.111.0 site=react_native_fb) This comment suppresses an
         * error found when Flow v0.111 was deployed. To see the error, delete this
         * comment and run Flow. */
        log_entry_label: action_name
      }
    )
  );
}

function log(logEntry) {
  eventEmitter.emit("log", logEntry);
  return logEntry;
}

module.exports = {
  on,
  createEntry,
  createActionStartEntry,
  createActionEndEntry,
  log
};