[Refactor] use pargs package

Author: ljharb

.eslintrc

@@ -8,13 +8,6 @@
 	},
 
 	"overrides": [
-		{
-			"files": "pargs.mjs",
-			"extends": "@ljharb/eslint-config/node/20",
-			"rules": {
-				"max-lines-per-function": 0,
-			},
-		},
 		{
 			"files": "./bin.mjs",
 			"extends": "@ljharb/eslint-config/node/20",

bin.mjs

@@ -1,41 +1,32 @@
 #! /usr/bin/env node
 
-import { readFileSync } from 'fs';
-import { join } from 'path';
-
 import npa from 'npm-package-arg';
 
-import pargs from './pargs.mjs';
-
-const help = readFileSync(join(import.meta.dirname, './help.txt'), 'utf8');
+import pargs from 'pargs';
 
 const {
-	positionals,
+	errors,
+	help,
+	positionals: [specifier],
 	values: { before },
-} = pargs(help, import.meta.url, {
-	allowPositionals: true,
+} = await pargs(import.meta.filename, {
+	allowPositionals: 1,
 	options: {
 		before: {
 			type: 'string',
 		},
 	},
 });
 
-const specifiers = positionals.slice(1);
-
-if (specifiers.length !== 1) {
-	console.error('You must provide exactly one specifier');
-	process.exit(1);
-}
-
 if (typeof before !== 'undefined' && typeof before !== 'string') {
-	console.error('`before` option must be a valid Date value');
-	process.exit(1);
+	errors.push('`before` option must be a valid Date value');
 }
 
+await help();
+
 let name, rawSpec;
 try {
-	({ name, rawSpec } = npa(specifiers[0]));
+	({ name, rawSpec } = npa(specifier));
 	if (rawSpec === '*') {
 		rawSpec = 'latest';
 	}
@@ -51,7 +42,8 @@ import mockProperty from 'mock-property';
 
 // eslint-disable-next-line no-empty-function, no-extra-parens
 const restore = mockProperty(/** @type {Parameters<typeof mockProperty>[0]} */ (/** @type {unknown} */ (console)), 'error', { value() {} });
-const promise = hasTypes(specifiers[0], { before });
+// @ts-expect-error before is a string
+const promise = hasTypes(specifier, { before });
 
 promise.finally(() => {
 	restore();

package.json

@@ -48,6 +48,7 @@
 		"mock-property": "^1.1.0",
 		"npm-package-arg": "^13.0.1",
 		"pacote": "^21.0.3",
+		"pargs": "^1.0.0",
 		"tmp": "^0.2.5"
 	},
 	"devDependencies": {