fix(cli): correct positional argument parsing (#3)

- Fix handling of 'compile' command in positional arguments
- Ensure schema file is properly identified when using compile command
- Prevent incorrect assignment of output file as schema input
- Maintain backward compatibility with existing command usage

Co-authored-by: Merlin Diavova <merlin@amespalsh.co.uk>

Author: 2 people

CHANGELOG.md

@@ -6,6 +6,10 @@ This project adheres to [Semantic Versioning][semver].
 The format of this changelog is [a variant][lib9-versionning] of [Keep a Changelog][keep-changelog].
 New entries must be placed in a section entitled `Unreleased`.
 
+## Unreleased
+
+- Fix CLI argument parsing when using `compile` command to properly identify schema files
+
 ## 0.16.0 (2024-11-02)
 
 -   BREAKING CHANGES: require Node.js 20.0.0 or above

src/bin/cli.ts

@@ -84,15 +84,16 @@ function main(): void {
         } else if (values.version) {
             console.info(VERSION)
         } else {
-            if (positionals.length > 1 && positionals[0] === "compile") {
-                positionals.pop()
+            let schemaIndex = 0
+            if (positionals.length > 0 && positionals[0] === "compile") {
+                schemaIndex = 1
             }
-            if (positionals.length > 1) {
-                console.error("only one argument is expected")
+            if (positionals.length > schemaIndex + 1) {
+                console.error("only one schema argument is expected")
                 process.exit(1)
             }
-            const schema = positionals.length > 0 ? positionals[0] : 0
-            const out = values.out ?? 1
+            const schema =
+                positionals.length > schemaIndex ? positionals[schemaIndex] : 0
             const generator = values.generator
             if (
                 generator != null &&
@@ -104,13 +105,12 @@ function main(): void {
                 console.error("Invalid <generator> value")
                 process.exit(1)
             }
-            compileAction(out, {
+            compileAction(schema, {
                 generator,
                 legacy: values.legacy,
                 lib: values.lib,
                 out: values.out,
                 pedantic: values.pedantic,
-                schema,
                 useClass: values["use-class"],
                 useGenericArray: values["use-generic-array"],
                 useIntEnum: values["use-int-enum"],