Upgrade tachometer to ES modules, and update dependencies

CHANGELOG.md

@@ -5,7 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this
 project adheres to [Semantic Versioning](http://semver.org/).
 
-<!-- ## Unreleased -->
+## Unreleased
+
+- [**BREAKING**] Tachometer is now an ES module binary, so it requires Node 12
+  or higher.
+- Upgraded dependencies and removed unnecessary ones.
 
 ## [0.6.0] 2022-07-01
 

bin/tach.js

@@ -6,5 +6,5 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-// eslint-disable-next-line @typescript-eslint/no-var-requires
-require('../lib/cli.js').main(process.argv);
+import {main} from '../lib/cli.js';
+main(process.argv);

package.json

@@ -6,6 +6,7 @@
   "directories": {
     "lib": "lib"
   },
+  "type": "module",
   "bin": {
     "tach": "bin/tach.js",
     "tachometer": "bin/tach.js"
@@ -37,16 +38,13 @@
     "chromedriver"
   ],
   "dependencies": {
-    "@types/command-line-usage": "^5.0.1",
-    "@types/selenium-webdriver": "^4.0.11",
-    "@types/table": "^6.0.0",
     "ansi-escape-sequences": "^6.0.1",
     "command-line-args": "^5.0.2",
     "command-line-usage": "^6.1.0",
-    "csv-stringify": "^5.3.0",
+    "csv-stringify": "^6.2.0",
     "fs-extra": "^10.0.0",
     "get-stream": "^6.0.0",
-    "got": "^11.5.0",
+    "got": "^12.1.0",
     "jsonschema": "^1.4.0",
     "jsonwebtoken": "^8.5.1",
     "jstat": "^1.9.2",
@@ -57,26 +55,25 @@
     "koa-send": "^5.0.0",
     "koa-static": "^5.0.0",
     "pkg-install": "^1.0.0",
-    "pkg-up": "^3.1.0",
+    "pkg-up": "^4.0.0",
     "progress": "^2.0.3",
     "sanitize-filename": "^1.6.3",
     "selenium-webdriver": "^4.0.0-alpha.8",
     "semver": "^7.1.1",
     "source-map-support": "^0.5.16",
-    "strip-ansi": "^6.0.0",
+    "strip-ansi": "^7.0.1",
     "systeminformation": "^5.3.3",
     "table": "^6.0.7",
-    "ua-parser-js": "^0.7.19"
+    "ua-parser-js": "^1.0.2"
   },
   "devDependencies": {
     "@types/ansi-escape-sequences": "^4.0.0",
     "@types/babel__generator": "^7.6.1",
     "@types/chai": "^4.2.4",
     "@types/chai-as-promised": "^7.1.2",
     "@types/command-line-args": "^5.0.0",
-    "@types/csv-stringify": "^3.1.0",
+    "@types/command-line-usage": "^5.0.1",
     "@types/fs-extra": "^9.0.1",
-    "@types/get-stream": "^3.0.2",
     "@types/got": "^9.6.8",
     "@types/jsonwebtoken": "^8.3.5",
     "@types/koa": "^2.0.51",
@@ -88,20 +85,21 @@
     "@types/node-fetch": "^2.5.3",
     "@types/progress": "^2.0.3",
     "@types/rimraf": "^3.0.0",
+    "@types/selenium-webdriver": "^4.0.11",
     "@types/semver": "^7.3.1",
     "@types/source-map-support": "^0.5.4",
     "@types/ua-parser-js": "^0.7.32",
-    "@typescript-eslint/eslint-plugin": "^4.31.1",
-    "@typescript-eslint/parser": "^4.31.1",
+    "@typescript-eslint/eslint-plugin": "^5.30.6",
+    "@typescript-eslint/parser": "^5.30.6",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
-    "eslint": "^7.32.0",
+    "eslint": "^8.19.0",
     "eslint-plugin-no-only-tests": "^2.6.0",
-    "mocha": "^9.1.1",
-    "node-fetch": "^2.6.0",
+    "mocha": "^10.0.0",
+    "node-fetch": "^3.2.8",
     "prettier": "^2.4.1",
     "rimraf": "^3.0.2",
     "typescript": "^4.0.2",
-    "typescript-json-schema": "^0.51.0"
+    "typescript-json-schema": "^0.54.0"
   }
 }

src/browser.ts

@@ -5,12 +5,12 @@
  */
 
 import * as webdriver from 'selenium-webdriver';
-import * as chrome from 'selenium-webdriver/chrome';
-import * as edge from 'selenium-webdriver/edge';
-import * as firefox from 'selenium-webdriver/firefox';
+import * as chrome from 'selenium-webdriver/chrome.js';
+import * as edge from 'selenium-webdriver/edge.js';
+import * as firefox from 'selenium-webdriver/firefox.js';
 
-import {installOnDemand} from './install';
-import {isHttpUrl} from './util';
+import {installOnDemand} from './install.js';
+import {isHttpUrl} from './util.js';
 
 /** Tachometer browser names. Often but not always equal to WebDriver's. */
 export type BrowserName = 'chrome' | 'firefox' | 'safari' | 'edge' | 'ie';
@@ -181,7 +181,7 @@ export async function makeDriver(
 
   if (webdriverModuleName != null) {
     await installOnDemand(webdriverModuleName);
-    require(webdriverModuleName);
+    await import(webdriverModuleName);
   }
 
   const builder = new webdriver.Builder();

src/cli.ts

@@ -9,23 +9,26 @@ sourceMapSupport.install();
 
 import * as path from 'path';
 import ansi from 'ansi-escape-sequences';
-import * as semver from 'semver';
+import semver from 'semver';
 
 import commandLineUsage from 'command-line-usage';
 
-import {optDefs, parseFlags} from './flags';
-import {BenchmarkSpec} from './types';
-import {makeConfig} from './config';
-import {Server} from './server';
-import {ResultStatsWithDifferences} from './stats';
+import {optDefs, parseFlags} from './flags.js';
+import {BenchmarkSpec} from './types.js';
+import {makeConfig} from './config.js';
+import {Server} from './server.js';
+import {ResultStatsWithDifferences} from './stats.js';
 import {
   prepareVersionDirectory,
   makeServerPlans,
   installGitDependency,
-} from './versions';
-import {manualMode} from './manual';
-import {Runner} from './runner';
-import {runNpm} from './util';
+} from './versions.js';
+import {manualMode} from './manual.js';
+import {Runner} from './runner.js';
+import {runNpm} from './util.js';
+
+import {createRequire} from 'module';
+const require = createRequire(import.meta.url);
 
 const installedVersion = (): string =>
   // eslint-disable-next-line @typescript-eslint/no-var-requires

src/config.ts

@@ -4,18 +4,18 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-import * as fsExtra from 'fs-extra';
+import fsExtra from 'fs-extra';
 import * as path from 'path';
 
-import {fcpBrowsers} from './browser';
-import {parseConfigFile, writeBackSchemaIfNeeded} from './configfile';
-import * as defaults from './defaults';
-import {Opts} from './flags';
-import {CheckConfig, parseGithubCheckFlag} from './github';
-import {specsFromOpts} from './specs';
-import {AutoSampleConditions} from './stats';
-import {BenchmarkSpec} from './types';
-import {fileKind} from './util';
+import {fcpBrowsers} from './browser.js';
+import {parseConfigFile, writeBackSchemaIfNeeded} from './configfile.js';
+import * as defaults from './defaults.js';
+import {Opts} from './flags.js';
+import {CheckConfig, parseGithubCheckFlag} from './github.js';
+import {specsFromOpts} from './specs.js';
+import {AutoSampleConditions} from './stats.js';
+import {BenchmarkSpec} from './types.js';
+import {fileKind} from './util.js';
 
 /**
  * Validated and fully specified configuration.

src/configfile.ts

@@ -4,27 +4,29 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-import * as fsExtra from 'fs-extra';
+import fsExtra from 'fs-extra';
 import * as jsonschema from 'jsonschema';
 import * as path from 'path';
 import sanitizeFileName from 'sanitize-filename';
+import {createRequire} from 'module';
+const require = createRequire(import.meta.url);
 
 import {
   BrowserConfig,
   BrowserName,
   parseBrowserConfigString,
   validateBrowserConfig,
-} from './browser';
-import {Config, parseAutoSampleConditions, urlFromLocalPath} from './config';
-import * as defaults from './defaults';
-import {makeUniqueSpecLabelFn} from './format';
+} from './browser.js';
+import {Config, parseAutoSampleConditions, urlFromLocalPath} from './config.js';
+import * as defaults from './defaults.js';
+import {makeUniqueSpecLabelFn} from './format.js';
 import {
   BenchmarkSpec,
   ExtendedPackageDependencyMap,
   Measurement,
   measurements,
-} from './types';
-import {isHttpUrl} from './util';
+} from './types.js';
+import {isHttpUrl} from './util.js';
 
 /**
  * Expected format of the top-level JSON config file. Note this interface is

src/csv.ts

@@ -4,9 +4,9 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-import csvStringify from 'csv-stringify/lib/sync';
+import {stringify as csvStringify} from 'csv-stringify/sync';
 
-import {ResultStatsWithDifferences} from './stats';
+import {ResultStatsWithDifferences} from './stats.js';
 
 const precision = 5;
 

src/defaults.ts

@@ -5,8 +5,8 @@
  */
 
 import * as path from 'path';
-import {BrowserName} from './browser';
-import {LocalUrl, Measurement, RemoteUrl} from './types';
+import {BrowserName} from './browser.js';
+import {LocalUrl, Measurement, RemoteUrl} from './types.js';
 
 export const windowWidth = 1024;
 export const windowHeight = 768;

src/flags.ts

@@ -7,12 +7,12 @@
 import * as os from 'os';
 import * as path from 'path';
 
-import {supportedBrowsers} from './browser';
-import * as defaults from './defaults';
-import {CommandLineMeasurements, measurements} from './types';
+import {supportedBrowsers} from './browser.js';
+import * as defaults from './defaults.js';
+import {CommandLineMeasurements, measurements} from './types.js';
 
-import commandLineArgs = require('command-line-args');
-import commandLineUsage = require('command-line-usage');
+import commandLineArgs from 'command-line-args';
+import commandLineUsage from 'command-line-usage';
 
 export const defaultInstallDir = path.join(
   os.tmpdir(),

src/format.ts

@@ -4,19 +4,18 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-import stripAnsi = require('strip-ansi');
+import stripAnsi from 'strip-ansi';
 import * as table from 'table';
 import {UAParser} from 'ua-parser-js';
-
-import ansi = require('ansi-escape-sequences');
+import ansi from 'ansi-escape-sequences';
 
 import {
   Difference,
   ConfidenceInterval,
   ResultStats,
   ResultStatsWithDifferences,
-} from './stats';
-import {BenchmarkSpec, BenchmarkResult} from './types';
+} from './stats.js';
+import {BenchmarkSpec, BenchmarkResult} from './types.js';
 
 export const spinner = ['⠋', '⠙', '⠹', '⠸', '⠼', '⠴', '⠦', '⠧', '⠇', '⠏'].map(
   (frame) => ansi.format(`[blue]{${frame}}`)

src/install.ts

@@ -9,10 +9,13 @@ import {promisify} from 'util';
 import {promises as fs} from 'fs';
 import path from 'path';
 import {install} from 'pkg-install';
-import pkgUp from 'pkg-up';
+import {pkgUp} from 'pkg-up';
 
 const execPromise = promisify(exec);
 
+import * as url from 'url';
+const __dirname = url.fileURLToPath(new URL('.', import.meta.url));
+
 export type OnDemandDependencies = Map<string, string>;
 
 /**
@@ -38,7 +41,7 @@ export interface ContainsOnDemandDependencies {
   installsOnDemand?: string[];
 }
 
-export const getPackageJSONPath = async (): Promise<string | null> => {
+export const getPackageJSONPath = async (): Promise<string | undefined> => {
   // NOTE: This used to search starting with module.path, but module.path was
   // not added until Node.js v11. In order to preserve Node.js v10 compatibility
   // we use __dirname instead, which should be mostly the same thing (docs are

src/json-output.ts

@@ -6,10 +6,10 @@
 
 import * as systeminformation from 'systeminformation';
 
-import {BrowserConfig} from './browser';
-import {measurementName} from './measure';
-import {ResultStatsWithDifferences} from './stats';
-import {BenchmarkResult, Measurement} from './types';
+import {BrowserConfig} from './browser.js';
+import {measurementName} from './measure.js';
+import {ResultStatsWithDifferences} from './stats.js';
+import {BenchmarkResult, Measurement} from './types.js';
 
 export interface JsonOutputFile {
   benchmarks: Benchmark[];

src/manual.ts

@@ -4,12 +4,11 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-import ansi = require('ansi-escape-sequences');
-
-import {Server} from './server';
-import {Config} from './config';
-import {specUrl} from './specs';
-import {BenchmarkSpec} from './types';
+import ansi from 'ansi-escape-sequences';
+import {Server} from './server.js';
+import {Config} from './config.js';
+import {specUrl} from './specs.js';
+import {BenchmarkSpec} from './types.js';
 
 /**
  * Let the user run benchmarks manually. This process will not exit until

src/measure.ts

@@ -6,9 +6,9 @@
 
 import * as webdriver from 'selenium-webdriver';
 
-import {Server} from './server';
-import {Measurement, PerformanceEntryMeasurement} from './types';
-import {throwUnreachable} from './util';
+import {Server} from './server.js';
+import {Measurement, PerformanceEntryMeasurement} from './types.js';
+import {throwUnreachable} from './util.js';
 
 /**
  * Try to take a measurement in milliseconds from the given browser. Returns