refactor: add "UnstableConfig" struct to cli/args/flags.rs (#21993)

This commit adds "UnstableConfig" struct which centralizes
handling of all "--unstable-*" flags.

Closes https://github.com/denoland/deno/issues/21920

2 files changed, 12 insertions, 7 deletions

diff --git a/cli/standalone/binary.rs b/cli/standalone/binary.rs
index cdf86fffa..3204ca397 100644
--- a/cli/standalone/binary.rs
+++ b/cli/standalone/binary.rs
@@ -33,6 +33,7 @@ use crate::args::CaData;
 use crate::args::CliOptions;
 use crate::args::CompileFlags;
 use crate::args::PackageJsonDepsProvider;
+use crate::args::UnstableConfig;
 use crate::cache::DenoDir;
 use crate::file_fetcher::FileFetcher;
 use crate::http_util::HttpClient;
@@ -137,8 +138,6 @@ pub enum NodeModules {
 #[derive(Deserialize, Serialize)]
 pub struct Metadata {
   pub argv: Vec<String>,
-  pub unstable: bool,
-  pub unstable_features: Vec<String>,
   pub seed: Option<u64>,
   pub permissions: PermissionsOptions,
   pub location: Option<Url>,
@@ -151,6 +150,7 @@ pub struct Metadata {
   pub entrypoint: ModuleSpecifier,
   pub node_modules: Option<NodeModules>,
   pub disable_deprecated_api_warning: bool,
+  pub unstable_config: UnstableConfig,
 }
 
 pub fn load_npm_vfs(root_dir_path: PathBuf) -> Result<FileBackedVfs, AnyError> {
@@ -543,8 +543,6 @@ impl<'a> DenoCompileBinaryWriter<'a> {
 
     let metadata = Metadata {
       argv: compile_flags.args.clone(),
-      unstable: cli_options.unstable(),
-      unstable_features: cli_options.unstable_features(),
       seed: cli_options.seed(),
       location: cli_options.location_flag().clone(),
       permissions: cli_options.permissions_options(),
@@ -560,6 +558,13 @@ impl<'a> DenoCompileBinaryWriter<'a> {
       node_modules,
       disable_deprecated_api_warning: cli_options
         .disable_deprecated_api_warning,
+      unstable_config: UnstableConfig {
+        legacy_flag_enabled: cli_options.legacy_unstable_flag(),
+        bare_node_builtins: cli_options.unstable_bare_node_builtins(),
+        byonm: cli_options.unstable_byonm(),
+        sloppy_imports: cli_options.unstable_sloppy_imports(),
+        features: cli_options.unstable_features(),
+      },
     };
 
     write_binary_bytes(
diff --git a/cli/standalone/mod.rs b/cli/standalone/mod.rs
index 8a98636a4..7054e3451 100644
--- a/cli/standalone/mod.rs
+++ b/cli/standalone/mod.rs
@@ -487,10 +487,10 @@ pub async fn run(
     // TODO(bartlomieju): enable, once we deprecate `--unstable` in favor
     // of granular --unstable-* flags.
     // feature_checker.set_warn_cb(Box::new(crate::unstable_warn_cb));
-    if metadata.unstable {
+    if metadata.unstable_config.legacy_flag_enabled {
       checker.enable_legacy_unstable();
     }
-    for feature in metadata.unstable_features {
+    for feature in metadata.unstable_config.features {
       // `metadata` is valid for the whole lifetime of the program, so we
       // can leak the string here.
       checker.enable_feature(feature.leak());
@@ -535,7 +535,7 @@ pub async fn run(
       seed: metadata.seed,
       unsafely_ignore_certificate_errors: metadata
         .unsafely_ignore_certificate_errors,
-      unstable: metadata.unstable,
+      unstable: metadata.unstable_config.legacy_flag_enabled,
       maybe_root_package_json_deps: package_json_deps_provider.deps().cloned(),
     },
     None,