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feat: Codegen feature flags (#28920)
This commit adds "deno_features" crate that contains definitions of all unstable features in Deno. Based on these definitions, both Rust and JS code is generated ensuring that the two are always in sync. In addition some of flag handling was rewritten to use the generated definitions, instead of hand rolling these flag definitions. --------- Co-authored-by: snek <snek@deno.com>
This commit is contained in:
Bartek Iwańczuk
GitHub
parent
4924731ac3
commit
189ccffdb9
19 changed files with 701 additions and 284 deletions
211
runtime/features/data.rs
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211
runtime/features/data.rs
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// Copyright 2018-2025 the Deno authors. MIT license.
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// NOTE(bartlomieju): some fields are marked as never read, even though they are
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// actually used in the CLI.
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#![allow(dead_code)]
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use crate::structs::UnstableFeatureKind;
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#[derive(Clone, Debug)]
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pub enum ConfigFileOption {
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SameAsFlagName,
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Renamed(&'static str),
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}
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#[derive(Clone, Debug)]
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pub struct UnstableFeatureDescription {
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pub name: &'static str,
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pub help_text: &'static str,
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// TODO(bartlomieju): is it needed?
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pub show_in_help: bool,
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pub kind: UnstableFeatureKind,
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pub env_var: Option<&'static str>,
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pub config_option: ConfigFileOption,
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}
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pub static FEATURE_DESCRIPTIONS: &[UnstableFeatureDescription] = &[
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UnstableFeatureDescription {
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name: "bare-node-builtins",
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help_text: "Enable unstable bare node builtins feature",
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show_in_help: true,
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kind: UnstableFeatureKind::Cli,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: Some("DENO_UNSTABLE_BARE_NODE_BUILTINS"),
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},
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UnstableFeatureDescription {
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name: "broadcast-channel",
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help_text: "Enable unstable `BroadcastChannel` API",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "byonm",
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help_text: "",
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show_in_help: false,
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kind: UnstableFeatureKind::Cli,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "cron",
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help_text: "Enable unstable `Deno.cron` API",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "detect-cjs",
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help_text: "Treats ambiguous .js, .jsx, .ts, .tsx files as CommonJS modules in more cases",
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show_in_help: true,
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kind: UnstableFeatureKind::Cli,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "ffi",
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help_text: "Enable unstable FFI APIs",
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show_in_help: false,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "fs",
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help_text: "Enable unstable file system APIs",
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show_in_help: false,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "http",
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help_text: "Enable unstable HTTP APIs",
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show_in_help: false,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "kv",
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help_text: "Enable unstable KV APIs",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "lazy-dynamic-imports",
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help_text: "Lazily loads statically analyzable dynamic imports when not running with type checking. Warning: This may change the order of semver specifier resolution.",
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show_in_help: true,
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kind: UnstableFeatureKind::Cli,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: Some("DENO_UNSTABLE_LAZY_DYNAMIC_IMPORTS"),
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},
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UnstableFeatureDescription {
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name: "lockfile-v5",
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help_text: "Enable unstable lockfile v5",
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show_in_help: true,
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kind: UnstableFeatureKind::Cli,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: Some("DENO_UNSTABLE_LOCKFILE_V5"),
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},
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UnstableFeatureDescription {
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name: "net",
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help_text: "enable unstable net APIs",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "no-legacy-abort",
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help_text: "Enable abort signal in Deno.serve without legacy behavior. This will not abort the server when the request is handled successfully.",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "node-globals",
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help_text: "Expose Node globals everywhere",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "npm-lazy-caching",
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help_text: "Enable unstable lazy caching of npm dependencies, downloading them only as needed (disabled: all npm packages in package.json are installed on startup; enabled: only npm packages that are actually referenced in an import are installed",
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show_in_help: true,
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kind: UnstableFeatureKind::Cli,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: Some("DENO_UNSTABLE_NPM_LAZY_CACHING"),
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},
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UnstableFeatureDescription {
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name: "otel",
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help_text: "Enable unstable OpenTelemetry features",
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show_in_help: false,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "process",
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help_text: "Enable unstable process APIs",
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show_in_help: false,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "sloppy-imports",
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help_text: "Enable unstable resolving of specifiers by extension probing, .js to .ts, and directory probing",
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show_in_help: true,
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kind: UnstableFeatureKind::Cli,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: Some("DENO_UNSTABLE_SLOPPY_IMPORTS"),
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},
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UnstableFeatureDescription {
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name: "temporal",
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help_text: "Enable unstable Temporal API",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "unsafe-proto",
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help_text: "Enable unsafe __proto__ support. This is a security risk.",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "vsock",
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help_text: "Enable unstable VSOCK APIs",
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show_in_help: false,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "webgpu",
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help_text: "Enable unstable WebGPU APIs",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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UnstableFeatureDescription {
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name: "worker-options",
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help_text: "Enable unstable Web Worker APIs",
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show_in_help: true,
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kind: UnstableFeatureKind::Runtime,
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config_option: ConfigFileOption::SameAsFlagName,
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env_var: None,
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},
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];
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