CLI (#84)

* move to packages

* update deps

* update deps

* actions maintenance

* don't use blob

* cli

* fix default import

* use synthetic default imports

* remove comment

* cli packaging

* node 18 guard

* packages

* build system

* testing

* test pipeline

* pipelines

* changelog

* version bump

* update locales

* update deps

* update deps

* update dependecies

packages/cli/src/parsers.ts

@@ -0,0 +1,27 @@
+import { InvalidArgumentError, InvalidOptionArgumentError } from '@commander-js/extra-typings'
+import { accessSync, constants } from 'node:fs'
+import { resolve } from 'node:path'
+
+export function parseFile(value: string, before: string[] = []) {
+  try {
+    const file = resolve(value)
+    accessSync(file, constants.R_OK)
+    return [...before, file]
+  } catch {
+    throw new InvalidArgumentError('cannot access file')
+  }
+}
+
+export function parseURL(value: string, _: URL): URL {
+  try {
+    return new URL(value)
+  } catch {
+    throw new InvalidArgumentError('is not a valid url')
+  }
+}
+
+export function parseNumber(value: string, _: number): number {
+  const n = parseInt(value, 10)
+  if (isNaN(n)) throw new InvalidOptionArgumentError('invalid number')
+  return n
+}