next_core/

next_config.rs

use anyhow::{Context, Result, bail};
use async_trait::async_trait;
use bincode::{Decode, Encode};
use either::Either;
use rustc_hash::FxHashSet;
use serde::{Deserialize, Deserializer, Serialize};
use serde_json::Value as JsonValue;
use turbo_esregex::EsRegex;
use turbo_rcstr::{RcStr, rcstr};
use turbo_tasks::{
    FxIndexMap, NonLocalValue, OperationValue, ResolvedVc, TaskInput, Vc, debug::ValueDebugFormat,
    trace::TraceRawVcs,
};
use turbo_tasks_env::EnvMap;
use turbo_tasks_fetch::FetchClientConfig;
use turbo_tasks_fs::{
    FileSystemPath,
    glob::{Glob, GlobOptions},
};
use turbopack::module_options::{
    ConditionContentType, ConditionItem, ConditionPath, ConditionQuery, LoaderRuleItem,
    WebpackRules, module_options_context::MdxTransformOptions,
};
use turbopack_core::{
    chunk::{CrossOrigin, SourceMapsType},
    issue::{
        IgnoreIssue, IgnoreIssuePattern, Issue, IssueExt, IssueSeverity, IssueStage, StyledString,
    },
    resolve::ResolveAliasMap,
};
use turbopack_ecmascript::{OptionTreeShaking, TreeShakingMode};
use turbopack_ecmascript_plugins::transform::{
    emotion::EmotionTransformConfig, relay::RelayConfig,
    styled_components::StyledComponentsTransformConfig,
};
use turbopack_node::transforms::webpack::{WebpackLoaderItem, WebpackLoaderItems};

use crate::{
    app_structure::FileSystemPathVec,
    mode::NextMode,
    next_import_map::mdx_import_source_file,
    next_shared::{
        transforms::ModularizeImportPackageConfig, webpack_rules::WebpackLoaderBuiltinCondition,
    },
};

#[turbo_tasks::value(transparent)]
pub struct ModularizeImports(
    #[bincode(with = "turbo_bincode::indexmap")] FxIndexMap<String, ModularizeImportPackageConfig>,
);

#[turbo_tasks::value(transparent)]
#[derive(Clone, Debug)]
pub struct CacheKinds(FxHashSet<RcStr>);

impl CacheKinds {
    pub fn extend<I: IntoIterator<Item = RcStr>>(&mut self, iter: I) {
        self.0.extend(iter);
    }
}

impl Default for CacheKinds {
    fn default() -> Self {
        CacheKinds(
            ["default", "remote", "private"]
                .iter()
                .map(|&s| s.into())
                .collect(),
        )
    }
}

#[turbo_tasks::value(transparent)]
pub struct CacheHandlersMap(#[bincode(with = "turbo_bincode::indexmap")] FxIndexMap<RcStr, RcStr>);

#[turbo_tasks::value(eq = "manual")]
#[derive(Clone, Debug, Default, PartialEq, Deserialize)]
#[serde(default, rename_all = "camelCase")]
pub struct NextConfig {
    // IMPORTANT: all fields should be private and access should be wrapped within a turbo-tasks
    // function. Otherwise changing NextConfig will lead to invalidating all tasks accessing it.
    config_file: Option<RcStr>,
    config_file_name: RcStr,

    /// In-memory cache size in bytes.
    ///
    /// If `cache_max_memory_size: 0` disables in-memory caching.
    cache_max_memory_size: Option<f64>,
    /// custom path to a cache handler to use
    cache_handler: Option<RcStr>,
    #[bincode(with_serde)]
    cache_handlers: Option<FxIndexMap<RcStr, RcStr>>,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    env: FxIndexMap<String, JsonValue>,
    experimental: ExperimentalConfig,
    images: ImageConfig,
    page_extensions: Vec<RcStr>,
    react_compiler: Option<ReactCompilerOptionsOrBoolean>,
    react_production_profiling: Option<bool>,
    react_strict_mode: Option<bool>,
    transpile_packages: Option<Vec<RcStr>>,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    modularize_imports: Option<FxIndexMap<String, ModularizeImportPackageConfig>>,
    dist_dir: RcStr,
    dist_dir_root: RcStr,
    deployment_id: Option<RcStr>,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    sass_options: Option<serde_json::Value>,
    trailing_slash: Option<bool>,
    asset_prefix: Option<RcStr>,
    base_path: Option<RcStr>,
    skip_proxy_url_normalize: Option<bool>,
    skip_trailing_slash_redirect: Option<bool>,
    i18n: Option<I18NConfig>,
    cross_origin: CrossOrigin,
    dev_indicators: Option<DevIndicatorsConfig>,
    output: Option<OutputType>,
    turbopack: Option<TurbopackConfig>,
    production_browser_source_maps: bool,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    output_file_tracing_includes: Option<serde_json::Value>,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    output_file_tracing_excludes: Option<serde_json::Value>,
    // TODO: This option is not respected, it uses Turbopack's root instead.
    output_file_tracing_root: Option<RcStr>,

    /// Enables the bundling of node_modules packages (externals) for pages
    /// server-side bundles.
    ///
    /// [API Reference](https://nextjs.org/docs/pages/api-reference/next-config-js/bundlePagesRouterDependencies)
    bundle_pages_router_dependencies: Option<bool>,

    /// A list of packages that should be treated as external on the server
    /// build.
    ///
    /// [API Reference](https://nextjs.org/docs/app/api-reference/next-config-js/serverExternalPackages)
    server_external_packages: Option<Vec<RcStr>>,

    #[serde(rename = "_originalRedirects")]
    original_redirects: Option<Vec<Redirect>>,

    // Partially supported
    compiler: Option<CompilerConfig>,

    optimize_fonts: Option<bool>,

    clean_dist_dir: bool,
    compress: bool,
    eslint: EslintConfig,
    exclude_default_moment_locales: bool,
    generate_etags: bool,
    http_agent_options: HttpAgentConfig,
    on_demand_entries: OnDemandEntriesConfig,
    powered_by_header: bool,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    public_runtime_config: FxIndexMap<String, serde_json::Value>,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    server_runtime_config: FxIndexMap<String, serde_json::Value>,
    static_page_generation_timeout: f64,
    target: Option<String>,
    typescript: TypeScriptConfig,
    use_file_system_public_routes: bool,
    cache_components: Option<bool>,
    //
    // These are never used by Turbopack, and potentially non-serializable anyway:
    // cache_life: (),
    // export_path_map: Option<serde_json::Value>,
    // generate_build_id: Option<serde_json::Value>,
    // webpack: Option<serde_json::Value>,
}

#[turbo_tasks::value_impl]
impl NextConfig {
    #[turbo_tasks::function]
    pub fn with_analyze_config(&self) -> Vc<Self> {
        let mut new = self.clone();
        new.experimental.turbopack_source_maps = Some(true);
        new.experimental.turbopack_input_source_maps = Some(false);
        new.cell()
    }
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
struct EslintConfig {
    dirs: Option<Vec<String>>,
    ignore_during_builds: Option<bool>,
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "kebab-case")]
pub enum BuildActivityPositions {
    #[default]
    BottomRight,
    BottomLeft,
    TopRight,
    TopLeft,
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct DevIndicatorsOptions {
    pub build_activity_position: Option<BuildActivityPositions>,
    pub position: Option<BuildActivityPositions>,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(untagged)]
pub enum DevIndicatorsConfig {
    WithOptions(DevIndicatorsOptions),
    Boolean(bool),
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
struct OnDemandEntriesConfig {
    max_inactive_age: f64,
    pages_buffer_length: f64,
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
struct HttpAgentConfig {
    keep_alive: bool,
}

#[derive(
    Clone,
    Debug,
    PartialEq,
    Eq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct DomainLocale {
    pub default_locale: String,
    pub domain: String,
    pub http: Option<bool>,
    pub locales: Option<Vec<String>>,
}

#[derive(
    Clone,
    Debug,
    PartialEq,
    Eq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct I18NConfig {
    pub default_locale: String,
    pub domains: Option<Vec<DomainLocale>>,
    pub locale_detection: Option<bool>,
    pub locales: Vec<String>,
}

#[turbo_tasks::value(transparent)]
pub struct OptionI18NConfig(Option<I18NConfig>);

#[derive(
    Clone,
    Debug,
    PartialEq,
    Eq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "kebab-case")]
pub enum OutputType {
    Standalone,
    Export,
}

#[turbo_tasks::value(transparent)]
pub struct OptionOutputType(Option<OutputType>);

#[derive(
    Debug,
    Clone,
    Hash,
    Eq,
    PartialEq,
    Ord,
    PartialOrd,
    TaskInput,
    TraceRawVcs,
    Serialize,
    Deserialize,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(tag = "type", rename_all = "kebab-case")]
pub enum RouteHas {
    Header {
        key: RcStr,
        #[serde(skip_serializing_if = "Option::is_none")]
        value: Option<RcStr>,
    },
    Cookie {
        key: RcStr,
        #[serde(skip_serializing_if = "Option::is_none")]
        value: Option<RcStr>,
    },
    Query {
        key: RcStr,
        #[serde(skip_serializing_if = "Option::is_none")]
        value: Option<RcStr>,
    },
    Host {
        value: RcStr,
    },
}

#[derive(Clone, Debug, Default, PartialEq, Deserialize, TraceRawVcs, NonLocalValue)]
#[serde(rename_all = "camelCase")]
pub struct HeaderValue {
    pub key: RcStr,
    pub value: RcStr,
}

#[derive(Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue)]
#[serde(rename_all = "camelCase")]
pub struct Header {
    pub source: String,
    pub base_path: Option<bool>,
    pub locale: Option<bool>,
    pub headers: Vec<HeaderValue>,
    pub has: Option<Vec<RouteHas>>,
    pub missing: Option<Vec<RouteHas>>,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(rename_all = "camelCase")]
pub enum RedirectStatus {
    StatusCode(f64),
    Permanent(bool),
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct Redirect {
    pub source: String,
    pub destination: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub base_path: Option<bool>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub locale: Option<bool>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub has: Option<Vec<RouteHas>>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub missing: Option<Vec<RouteHas>>,

    #[serde(flatten)]
    pub status: RedirectStatus,
}

#[derive(Clone, Debug)]
pub struct Rewrite {
    pub source: String,
    pub destination: String,
    pub base_path: Option<bool>,
    pub locale: Option<bool>,
    pub has: Option<Vec<RouteHas>>,
    pub missing: Option<Vec<RouteHas>>,
}

#[derive(Clone, Debug)]
pub struct Rewrites {
    pub before_files: Vec<Rewrite>,
    pub after_files: Vec<Rewrite>,
    pub fallback: Vec<Rewrite>,
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct TypeScriptConfig {
    pub ignore_build_errors: Option<bool>,
    pub tsconfig_path: Option<String>,
}

#[turbo_tasks::value(eq = "manual", operation)]
#[derive(Clone, Debug, PartialEq, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ImageConfig {
    pub device_sizes: Vec<u16>,
    pub image_sizes: Vec<u16>,
    pub path: String,
    pub loader: ImageLoader,
    #[serde(deserialize_with = "empty_string_is_none")]
    pub loader_file: Option<String>,
    pub domains: Vec<String>,
    pub disable_static_images: bool,
    #[serde(rename = "minimumCacheTTL")]
    pub minimum_cache_ttl: u64,
    pub formats: Vec<ImageFormat>,
    #[serde(rename = "dangerouslyAllowSVG")]
    pub dangerously_allow_svg: bool,
    pub content_security_policy: String,
    pub remote_patterns: Vec<RemotePattern>,
    pub unoptimized: bool,
}

fn empty_string_is_none<'de, D>(deserializer: D) -> Result<Option<String>, D::Error>
where
    D: Deserializer<'de>,
{
    let o = Option::<String>::deserialize(deserializer)?;
    Ok(o.filter(|s| !s.is_empty()))
}

impl Default for ImageConfig {
    fn default() -> Self {
        // https://github.com/vercel/next.js/blob/327634eb/packages/next/shared/lib/image-config.ts#L100-L114
        Self {
            device_sizes: vec![640, 750, 828, 1080, 1200, 1920, 2048, 3840],
            image_sizes: vec![32, 48, 64, 96, 128, 256, 384],
            path: "/_next/image".to_string(),
            loader: ImageLoader::Default,
            loader_file: None,
            domains: vec![],
            disable_static_images: false,
            minimum_cache_ttl: 60,
            formats: vec![ImageFormat::Webp],
            dangerously_allow_svg: false,
            content_security_policy: "".to_string(),
            remote_patterns: vec![],
            unoptimized: false,
        }
    }
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(rename_all = "kebab-case")]
pub enum ImageLoader {
    Default,
    Imgix,
    Cloudinary,
    Akamai,
    Custom,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
pub enum ImageFormat {
    #[serde(rename = "image/webp")]
    Webp,
    #[serde(rename = "image/avif")]
    Avif,
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct RemotePattern {
    pub hostname: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub protocol: Option<RemotePatternProtocol>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub port: Option<String>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub pathname: Option<String>,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(rename_all = "kebab-case")]
pub enum RemotePatternProtocol {
    Http,
    Https,
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct TurbopackConfig {
    #[serde(default)]
    #[bincode(with = "turbo_bincode::indexmap")]
    pub rules: FxIndexMap<RcStr, RuleConfigCollection>,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    pub resolve_alias: Option<FxIndexMap<RcStr, JsonValue>>,
    pub resolve_extensions: Option<Vec<RcStr>>,
    pub debug_ids: Option<bool>,
    /// Issue patterns to ignore (suppress) from Turbopack output.
    #[serde(default)]
    pub ignore_issue: Option<Vec<TurbopackIgnoreIssueRule>>,
}

#[derive(
    Deserialize,
    Clone,
    PartialEq,
    Eq,
    Debug,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(deny_unknown_fields)]
pub struct RegexComponents {
    source: RcStr,
    flags: RcStr,
}

/// This type should not be hand-written, but instead `packages/next/src/build/swc/index.ts` will
/// transform a JS `RegExp` to a `RegexComponents` or a string to a `Glob` before passing it to us.
///
/// This is needed because `RegExp` objects are not otherwise serializable.
#[derive(
    Clone,
    PartialEq,
    Eq,
    Debug,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(
    tag = "type",
    content = "value",
    rename_all = "camelCase",
    deny_unknown_fields
)]
pub enum ConfigConditionPath {
    Glob(RcStr),
    Regex(RegexComponents),
}

impl TryFrom<ConfigConditionPath> for ConditionPath {
    type Error = anyhow::Error;

    fn try_from(config: ConfigConditionPath) -> Result<ConditionPath> {
        Ok(match config {
            ConfigConditionPath::Glob(path) => ConditionPath::Glob(path),
            ConfigConditionPath::Regex(path) => {
                ConditionPath::Regex(EsRegex::try_from(path)?.resolved_cell())
            }
        })
    }
}

impl TryFrom<RegexComponents> for EsRegex {
    type Error = anyhow::Error;

    fn try_from(components: RegexComponents) -> Result<EsRegex> {
        EsRegex::new(&components.source, &components.flags)
    }
}

#[derive(
    Clone,
    PartialEq,
    Eq,
    Debug,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(
    tag = "type",
    content = "value",
    rename_all = "camelCase",
    deny_unknown_fields
)]
pub enum ConfigConditionQuery {
    Constant(RcStr),
    Regex(RegexComponents),
}

impl TryFrom<ConfigConditionQuery> for ConditionQuery {
    type Error = anyhow::Error;

    fn try_from(config: ConfigConditionQuery) -> Result<ConditionQuery> {
        Ok(match config {
            ConfigConditionQuery::Constant(value) => ConditionQuery::Constant(value),
            ConfigConditionQuery::Regex(regex) => {
                ConditionQuery::Regex(EsRegex::try_from(regex)?.resolved_cell())
            }
        })
    }
}

#[derive(
    Clone,
    PartialEq,
    Eq,
    Debug,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(
    tag = "type",
    content = "value",
    rename_all = "camelCase",
    deny_unknown_fields
)]
pub enum ConfigConditionContentType {
    Glob(RcStr),
    Regex(RegexComponents),
}

impl TryFrom<ConfigConditionContentType> for ConditionContentType {
    type Error = anyhow::Error;

    fn try_from(config: ConfigConditionContentType) -> Result<ConditionContentType> {
        Ok(match config {
            ConfigConditionContentType::Glob(value) => ConditionContentType::Glob(value),
            ConfigConditionContentType::Regex(regex) => {
                ConditionContentType::Regex(EsRegex::try_from(regex)?.resolved_cell())
            }
        })
    }
}

#[derive(
    Deserialize,
    Clone,
    PartialEq,
    Eq,
    Debug,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
// We can end up with confusing behaviors if we silently ignore extra properties, since `Base` will
// match nearly every object, since it has no required field.
#[serde(deny_unknown_fields)]
pub enum ConfigConditionItem {
    #[serde(rename = "all")]
    All(Box<[ConfigConditionItem]>),
    #[serde(rename = "any")]
    Any(Box<[ConfigConditionItem]>),
    #[serde(rename = "not")]
    Not(Box<ConfigConditionItem>),
    #[serde(untagged)]
    Builtin(WebpackLoaderBuiltinCondition),
    #[serde(untagged)]
    Base {
        #[serde(default)]
        path: Option<ConfigConditionPath>,
        #[serde(default)]
        content: Option<RegexComponents>,
        #[serde(default)]
        query: Option<ConfigConditionQuery>,
        #[serde(default, rename = "contentType")]
        content_type: Option<ConfigConditionContentType>,
    },
}

impl TryFrom<ConfigConditionItem> for ConditionItem {
    type Error = anyhow::Error;

    fn try_from(config: ConfigConditionItem) -> Result<Self> {
        let try_from_vec = |conds: Box<[_]>| {
            conds
                .into_iter()
                .map(ConditionItem::try_from)
                .collect::<Result<_>>()
        };
        Ok(match config {
            ConfigConditionItem::All(conds) => ConditionItem::All(try_from_vec(conds)?),
            ConfigConditionItem::Any(conds) => ConditionItem::Any(try_from_vec(conds)?),
            ConfigConditionItem::Not(cond) => ConditionItem::Not(Box::new((*cond).try_into()?)),
            ConfigConditionItem::Builtin(cond) => {
                ConditionItem::Builtin(RcStr::from(cond.as_str()))
            }
            ConfigConditionItem::Base {
                path,
                content,
                query,
                content_type,
            } => ConditionItem::Base {
                path: path.map(ConditionPath::try_from).transpose()?,
                content: content
                    .map(EsRegex::try_from)
                    .transpose()?
                    .map(EsRegex::resolved_cell),
                query: query.map(ConditionQuery::try_from).transpose()?,
                content_type: content_type
                    .map(ConditionContentType::try_from)
                    .transpose()?,
            },
        })
    }
}

#[derive(
    Clone,
    Debug,
    PartialEq,
    Eq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct RuleConfigItem {
    #[serde(default)]
    pub loaders: Vec<LoaderItem>,
    #[serde(default, alias = "as")]
    pub rename_as: Option<RcStr>,
    #[serde(default)]
    pub condition: Option<ConfigConditionItem>,
    #[serde(default, alias = "type")]
    pub module_type: Option<RcStr>,
}

#[derive(
    Clone, Debug, PartialEq, Eq, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
pub struct RuleConfigCollection(Vec<RuleConfigCollectionItem>);

impl<'de> Deserialize<'de> for RuleConfigCollection {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        match either::serde_untagged::deserialize::<Vec<RuleConfigCollectionItem>, RuleConfigItem, D>(
            deserializer,
        )? {
            Either::Left(collection) => Ok(RuleConfigCollection(collection)),
            Either::Right(item) => Ok(RuleConfigCollection(vec![RuleConfigCollectionItem::Full(
                item,
            )])),
        }
    }
}

#[derive(
    Clone,
    Debug,
    PartialEq,
    Eq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(untagged)]
pub enum RuleConfigCollectionItem {
    Shorthand(LoaderItem),
    Full(RuleConfigItem),
}

#[derive(
    Clone,
    Debug,
    PartialEq,
    Eq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(untagged)]
pub enum LoaderItem {
    LoaderName(RcStr),
    LoaderOptions(WebpackLoaderItem),
}

#[turbo_tasks::value(operation)]
#[derive(Copy, Clone, Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub enum ModuleIds {
    Named,
    Deterministic,
}

#[turbo_tasks::value(operation)]
#[derive(Copy, Clone, Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub enum TurbopackPluginRuntimeStrategy {
    #[cfg(feature = "worker_pool")]
    WorkerThreads,
    #[cfg(feature = "process_pool")]
    ChildProcesses,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(untagged)]
pub enum MdxRsOptions {
    Boolean(bool),
    Option(MdxTransformOptions),
}

#[turbo_tasks::value(shared, operation)]
#[derive(Clone, Debug, Default, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub enum ReactCompilerCompilationMode {
    #[default]
    Infer,
    Annotation,
    All,
}

#[turbo_tasks::value(shared, operation)]
#[derive(Clone, Debug, Default, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum ReactCompilerPanicThreshold {
    #[default]
    None,
    CriticalErrors,
    AllErrors,
}

#[turbo_tasks::value(shared, operation)]
#[derive(Clone, Debug, Serialize, Deserialize)]
pub enum ReactCompilerTarget {
    #[serde(rename = "18")]
    React18,
}

/// Subset of react compiler options, we pass these options through to the webpack loader, so it
/// must be serializable
#[turbo_tasks::value(shared, operation)]
#[derive(Clone, Debug, Default, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ReactCompilerOptions {
    #[serde(default)]
    pub compilation_mode: ReactCompilerCompilationMode,
    #[serde(default)]
    pub panic_threshold: ReactCompilerPanicThreshold,
    #[serde(default, skip_deserializing, skip_serializing_if = "Option::is_none")]
    pub target: Option<ReactCompilerTarget>,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(untagged)]
pub enum ReactCompilerOptionsOrBoolean {
    Boolean(bool),
    Option(ReactCompilerOptions),
}

#[turbo_tasks::value(transparent)]
pub struct OptionalReactCompilerOptions(Option<ResolvedVc<ReactCompilerOptions>>);

/// Serialized representation of a path pattern for `turbopack.ignoreIssue`.
/// Strings are serialized as `{ "type": "glob", "value": "..." }` and
/// RegExp as `{ "type": "regex", "source": "...", "flags": "..." }`.
#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(tag = "type")]
pub enum TurbopackIgnoreIssuePathPattern {
    #[serde(rename = "glob")]
    Glob { value: RcStr },
    #[serde(rename = "regex")]
    Regex { source: RcStr, flags: RcStr },
}

impl TurbopackIgnoreIssuePathPattern {
    fn to_ignore_pattern(&self) -> Result<IgnoreIssuePattern> {
        match self {
            TurbopackIgnoreIssuePathPattern::Glob { value } => Ok(IgnoreIssuePattern::Glob(
                Glob::parse(value.clone(), GlobOptions::default())?,
            )),
            TurbopackIgnoreIssuePathPattern::Regex { source, flags } => {
                Ok(IgnoreIssuePattern::Regex(EsRegex::new(source, flags)?))
            }
        }
    }
}

/// Serialized representation of a text pattern (title/description) for
/// `turbopack.ignoreIssue`. Strings are serialized as
/// `{ "type": "string", "value": "..." }` and RegExp as
/// `{ "type": "regex", "source": "...", "flags": "..." }`.
#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(tag = "type")]
pub enum TurbopackIgnoreIssueTextPattern {
    #[serde(rename = "string")]
    String { value: RcStr },
    #[serde(rename = "regex")]
    Regex { source: RcStr, flags: RcStr },
}

impl TurbopackIgnoreIssueTextPattern {
    fn to_ignore_pattern(&self) -> Result<IgnoreIssuePattern> {
        match self {
            TurbopackIgnoreIssueTextPattern::String { value } => {
                Ok(IgnoreIssuePattern::ExactString(value.clone()))
            }
            TurbopackIgnoreIssueTextPattern::Regex { source, flags } => {
                Ok(IgnoreIssuePattern::Regex(EsRegex::new(source, flags)?))
            }
        }
    }
}

/// A single rule in `turbopack.ignoreIssue`.
#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
pub struct TurbopackIgnoreIssueRule {
    pub path: TurbopackIgnoreIssuePathPattern,
    #[serde(default)]
    pub title: Option<TurbopackIgnoreIssueTextPattern>,
    #[serde(default)]
    pub description: Option<TurbopackIgnoreIssueTextPattern>,
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Deserialize,
    TraceRawVcs,
    ValueDebugFormat,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct ExperimentalConfig {
    // all fields should be private and access should be wrapped within a turbo-tasks function
    // Otherwise changing ExperimentalConfig will lead to invalidating all tasks accessing it.
    allowed_revalidate_header_keys: Option<Vec<RcStr>>,
    client_router_filter: Option<bool>,
    /// decimal for percent for possible false positives e.g. 0.01 for 10%
    /// potential false matches lower percent increases size of the filter
    client_router_filter_allowed_rate: Option<f64>,
    client_router_filter_redirects: Option<bool>,
    fetch_cache_key_prefix: Option<RcStr>,
    isr_flush_to_disk: Option<bool>,
    /// For use with `@next/mdx`. Compile MDX files using the new Rust compiler.
    /// @see [api reference](https://nextjs.org/docs/app/api-reference/next-config-js/mdxRs)
    mdx_rs: Option<MdxRsOptions>,
    strict_next_head: Option<bool>,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    swc_plugins: Option<Vec<(RcStr, serde_json::Value)>>,
    swc_env_options: Option<SwcEnvOptions>,
    external_middleware_rewrites_resolve: Option<bool>,
    scroll_restoration: Option<bool>,
    manual_client_base_path: Option<bool>,
    optimistic_client_cache: Option<bool>,
    middleware_prefetch: Option<MiddlewarePrefetchType>,
    /// optimizeCss can be boolean or critters' option object
    /// Use Record<string, unknown> as critters doesn't export its Option type ([link](https://github.com/GoogleChromeLabs/critters/blob/a590c05f9197b656d2aeaae9369df2483c26b072/packages/critters/src/index.d.ts))
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    optimize_css: Option<serde_json::Value>,
    next_script_workers: Option<bool>,
    web_vitals_attribution: Option<Vec<RcStr>>,
    server_actions: Option<ServerActionsOrLegacyBool>,
    sri: Option<SubResourceIntegrity>,
    /// @deprecated - use top-level cache_components instead.
    /// This field is kept for backwards compatibility during migration.
    cache_components: Option<bool>,
    use_cache: Option<bool>,
    root_params: Option<bool>,
    runtime_server_deployment_id: Option<bool>,
    supports_immutable_assets: Option<bool>,

    /// A salt to mix into chunk and asset content hashes. Empty string means
    /// no salt.
    output_hash_salt: Option<RcStr>,

    // ---
    // UNSUPPORTED
    // ---
    adjust_font_fallbacks: Option<bool>,
    adjust_font_fallbacks_with_size_adjust: Option<bool>,
    after: Option<bool>,
    app_document_preloading: Option<bool>,
    app_new_scroll_handler: Option<bool>,
    case_sensitive_routes: Option<bool>,
    cpus: Option<f64>,
    cra_compat: Option<bool>,
    disable_optimized_loading: Option<bool>,
    disable_postcss_preset_env: Option<bool>,
    esm_externals: Option<EsmExternals>,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    extension_alias: Option<serde_json::Value>,
    external_dir: Option<bool>,
    /// If set to `false`, webpack won't fall back to polyfill Node.js modules
    /// in the browser Full list of old polyfills is accessible here:
    /// [webpack/webpack#Module_notound_error.js#L13-L42](https://github.com/webpack/webpack/blob/2a0536cf510768111a3a6dceeb14cb79b9f59273/lib/Module_not_found_error.js#L13-L42)
    fallback_node_polyfills: Option<bool>, // false
    force_swc_transforms: Option<bool>,
    fully_specified: Option<bool>,
    gzip_size: Option<bool>,

    inline_css: Option<bool>,
    instrumentation_hook: Option<bool>,
    client_trace_metadata: Option<Vec<String>>,
    large_page_data_bytes: Option<f64>,
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    logging: Option<serde_json::Value>,
    memory_based_workers_count: Option<bool>,
    /// Optimize React APIs for server builds.
    optimize_server_react: Option<bool>,
    /// Automatically apply the "modularize_imports" optimization to imports of
    /// the specified packages.
    optimize_package_imports: Option<Vec<RcStr>>,
    taint: Option<bool>,
    proxy_timeout: Option<f64>,
    /// enables the minification of server code.
    server_minification: Option<bool>,
    /// Enables source maps generation for the server production bundle.
    server_source_maps: Option<bool>,
    swc_trace_profiling: Option<bool>,
    transition_indicator: Option<bool>,
    gesture_transition: Option<bool>,
    /// @internal Used by the Next.js internals only.
    trust_host_header: Option<bool>,

    #[bincode(with = "turbo_bincode::serde_self_describing")]
    url_imports: Option<serde_json::Value>,
    /// This option is to enable running the Webpack build in a worker thread
    /// (doesn't apply to Turbopack).
    webpack_build_worker: Option<bool>,
    worker_threads: Option<bool>,

    turbopack_minify: Option<bool>,
    turbopack_module_ids: Option<ModuleIds>,
    turbopack_plugin_runtime_strategy: Option<TurbopackPluginRuntimeStrategy>,
    turbopack_source_maps: Option<bool>,
    turbopack_input_source_maps: Option<bool>,
    turbopack_tree_shaking: Option<bool>,
    turbopack_scope_hoisting: Option<bool>,
    turbopack_client_side_nested_async_chunking: Option<bool>,
    turbopack_server_side_nested_async_chunking: Option<bool>,
    turbopack_import_type_bytes: Option<bool>,
    turbopack_import_type_text: Option<bool>,
    /// Disable automatic configuration of the sass loader.
    #[serde(default)]
    turbopack_use_builtin_sass: Option<bool>,
    /// Disable automatic configuration of the babel loader when a babel configuration file is
    /// present.
    #[serde(default)]
    turbopack_use_builtin_babel: Option<bool>,
    /// Enable per-directory PostCSS config resolution. When true, Turbopack
    /// searches for postcss.config.js starting from the CSS file's parent
    /// directory first, then falls back to the project root.
    #[serde(default)]
    turbopack_local_postcss_config: Option<bool>,
    // Whether to enable the global-not-found convention
    global_not_found: Option<bool>,
    /// Defaults to false in development mode, true in production mode.
    turbopack_remove_unused_imports: Option<bool>,
    /// Defaults to false in development mode, true in production mode.
    turbopack_remove_unused_exports: Option<bool>,
    /// Enable local analysis to infer side effect free modules. Defaults to true.
    turbopack_infer_module_side_effects: Option<bool>,
    /// Devtool option for the segment explorer.
    devtool_segment_explorer: Option<bool>,
    /// Whether to report inlined system environment variables as warnings or errors.
    report_system_env_inlining: Option<String>,
    // Use project.is_persistent_caching() instead
    // turbopack_file_system_cache_for_dev: Option<bool>,
    // turbopack_file_system_cache_for_build: Option<bool>,
    lightning_css_features: Option<LightningCssFeatures>,
}

#[derive(
    Clone,
    Debug,
    PartialEq,
    Eq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct SubResourceIntegrity {
    pub algorithm: Option<RcStr>,
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Eq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct LightningCssFeatures {
    pub include: Option<Vec<RcStr>>,
    pub exclude: Option<Vec<RcStr>>,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(untagged)]
pub enum ServerActionsOrLegacyBool {
    /// The current way to configure server actions sub behaviors.
    ServerActionsConfig(ServerActions),

    /// The legacy way to disable server actions. This is no longer used, server
    /// actions is always enabled.
    LegacyBool(bool),
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(rename_all = "kebab-case")]
pub enum EsmExternalsValue {
    Loose,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(untagged)]
pub enum EsmExternals {
    Loose(EsmExternalsValue),
    Bool(bool),
}

// Test for esm externals deserialization.
#[test]
fn test_esm_externals_deserialization() {
    let json = serde_json::json!({
        "esmExternals": true
    });
    let config: ExperimentalConfig = serde_json::from_value(json).unwrap();
    assert_eq!(config.esm_externals, Some(EsmExternals::Bool(true)));

    let json = serde_json::json!({
        "esmExternals": "loose"
    });
    let config: ExperimentalConfig = serde_json::from_value(json).unwrap();
    assert_eq!(
        config.esm_externals,
        Some(EsmExternals::Loose(EsmExternalsValue::Loose))
    );
}

#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Eq,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct ServerActions {
    /// Allows adjusting body parser size limit for server actions.
    pub body_size_limit: Option<SizeLimit>,
}

#[derive(Clone, Debug, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode)]
#[serde(untagged)]
pub enum SizeLimit {
    Number(f64),
    WithUnit(String),
}

// Manual implementation of PartialEq and Eq for SizeLimit because f64 doesn't
// implement Eq.
impl PartialEq for SizeLimit {
    fn eq(&self, other: &Self) -> bool {
        match (self, other) {
            (SizeLimit::Number(a), SizeLimit::Number(b)) => a.to_bits() == b.to_bits(),
            (SizeLimit::WithUnit(a), SizeLimit::WithUnit(b)) => a == b,
            _ => false,
        }
    }
}

impl Eq for SizeLimit {}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(rename_all = "kebab-case")]
pub enum MiddlewarePrefetchType {
    Strict,
    Flexible,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(untagged)]
pub enum EmotionTransformOptionsOrBoolean {
    Boolean(bool),
    Options(EmotionTransformConfig),
}

impl EmotionTransformOptionsOrBoolean {
    pub fn is_enabled(&self) -> bool {
        match self {
            Self::Boolean(enabled) => *enabled,
            _ => true,
        }
    }
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(untagged)]
pub enum StyledComponentsTransformOptionsOrBoolean {
    Boolean(bool),
    Options(StyledComponentsTransformConfig),
}

impl StyledComponentsTransformOptionsOrBoolean {
    pub fn is_enabled(&self) -> bool {
        match self {
            Self::Boolean(enabled) => *enabled,
            _ => true,
        }
    }
}

#[turbo_tasks::value(eq = "manual")]
#[derive(Clone, Debug, PartialEq, Default, OperationValue, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct CompilerConfig {
    pub react_remove_properties: Option<ReactRemoveProperties>,
    pub relay: Option<RelayConfig>,
    pub emotion: Option<EmotionTransformOptionsOrBoolean>,
    pub remove_console: Option<RemoveConsoleConfig>,
    pub styled_components: Option<StyledComponentsTransformOptionsOrBoolean>,
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(untagged, rename_all = "camelCase")]
pub enum ReactRemoveProperties {
    Boolean(bool),
    Config { properties: Option<Vec<String>> },
}

impl ReactRemoveProperties {
    pub fn is_enabled(&self) -> bool {
        match self {
            Self::Boolean(enabled) => *enabled,
            _ => true,
        }
    }
}

#[derive(
    Clone, Debug, PartialEq, Deserialize, TraceRawVcs, NonLocalValue, OperationValue, Encode, Decode,
)]
#[serde(untagged)]
pub enum RemoveConsoleConfig {
    Boolean(bool),
    Config { exclude: Option<Vec<String>> },
}

impl RemoveConsoleConfig {
    pub fn is_enabled(&self) -> bool {
        match self {
            Self::Boolean(enabled) => *enabled,
            _ => true,
        }
    }
}

#[turbo_tasks::value(transparent)]
pub struct ResolveExtensions(Option<Vec<RcStr>>);

#[turbo_tasks::value(transparent)]
pub struct SwcPlugins(
    #[bincode(with = "turbo_bincode::serde_self_describing")] Vec<(RcStr, serde_json::Value)>,
);

/// Options for SWC's preset-env, exposed via `experimental.swcEnvOptions`.
#[derive(
    Clone,
    Debug,
    Default,
    PartialEq,
    Eq,
    Serialize,
    Deserialize,
    TraceRawVcs,
    NonLocalValue,
    OperationValue,
    Encode,
    Decode,
)]
#[serde(rename_all = "camelCase")]
pub struct SwcEnvOptions {
    pub mode: Option<RcStr>,
    pub core_js: Option<RcStr>,
    pub skip: Option<Vec<RcStr>>,
    pub include: Option<Vec<RcStr>>,
    pub exclude: Option<Vec<RcStr>>,
    pub shipped_proposals: Option<bool>,
    pub force_all_transforms: Option<bool>,
    pub debug: Option<bool>,
    pub loose: Option<bool>,
}

#[turbo_tasks::value(transparent)]
pub struct OptionSwcEnvOptions(Option<SwcEnvOptions>);

#[turbo_tasks::value(transparent)]
pub struct OptionalMdxTransformOptions(Option<ResolvedVc<MdxTransformOptions>>);

#[turbo_tasks::value(transparent)]

pub struct OptionSubResourceIntegrity(Option<SubResourceIntegrity>);

#[turbo_tasks::value(transparent)]
pub struct OptionFileSystemPath(Option<FileSystemPath>);

#[turbo_tasks::value(transparent)]
pub struct IgnoreIssues(Vec<IgnoreIssue>);

#[turbo_tasks::value(transparent)]
pub struct OptionJsonValue(
    #[bincode(with = "turbo_bincode::serde_self_describing")] pub Option<serde_json::Value>,
);

fn turbopack_config_documentation_link() -> RcStr {
    rcstr!("https://nextjs.org/docs/app/api-reference/config/next-config-js/turbopack#configuring-webpack-loaders")
}

#[turbo_tasks::value(shared)]
struct InvalidLoaderRuleRenameAsIssue {
    glob: RcStr,
    rename_as: RcStr,
    config_file_path: FileSystemPath,
}

#[async_trait]
#[turbo_tasks::value_impl]
impl Issue for InvalidLoaderRuleRenameAsIssue {
    async fn file_path(&self) -> Result<FileSystemPath> {
        Ok(self.config_file_path.clone())
    }

    fn stage(&self) -> IssueStage {
        IssueStage::Config
    }

    async fn title(&self) -> Result<StyledString> {
        Ok(StyledString::Text(
            format!("Invalid loader rule for extension: {}", self.glob).into(),
        ))
    }

    async fn description(&self) -> Result<Option<StyledString>> {
        Ok(Some(StyledString::Text(RcStr::from(format!(
            "The extension {} contains a wildcard, but the `as` option does not: {}",
            self.glob, self.rename_as,
        )))))
    }

    fn documentation_link(&self) -> RcStr {
        turbopack_config_documentation_link()
    }
}

#[turbo_tasks::value(shared)]
struct InvalidLoaderRuleConditionIssue {
    error_string: RcStr,
    condition: ConfigConditionItem,
    config_file_path: FileSystemPath,
}

#[async_trait]
#[turbo_tasks::value_impl]
impl Issue for InvalidLoaderRuleConditionIssue {
    async fn file_path(&self) -> Result<FileSystemPath> {
        Ok(self.config_file_path.clone())
    }

    fn stage(&self) -> IssueStage {
        IssueStage::Config
    }

    async fn title(&self) -> Result<StyledString> {
        Ok(StyledString::Text(rcstr!(
            "Invalid condition for Turbopack loader rule"
        )))
    }

    async fn description(&self) -> Result<Option<StyledString>> {
        Ok(Some(StyledString::Stack(vec![
            StyledString::Line(vec![
                StyledString::Text(rcstr!("Encountered the following error: ")),
                StyledString::Code(self.error_string.clone()),
            ]),
            StyledString::Text(rcstr!("While processing the condition:")),
            StyledString::Code(RcStr::from(format!("{:#?}", self.condition))),
        ])))
    }

    fn documentation_link(&self) -> RcStr {
        turbopack_config_documentation_link()
    }
}

#[turbo_tasks::value_impl]
impl NextConfig {
    #[turbo_tasks::function]
    pub async fn from_string(string: Vc<RcStr>) -> Result<Vc<Self>> {
        let string = string.await?;
        let mut jdeserializer = serde_json::Deserializer::from_str(&string);
        let config: NextConfig = serde_path_to_error::deserialize(&mut jdeserializer)
            .with_context(|| format!("failed to parse next.config.js: {string}"))?;
        Ok(config.cell())
    }

    #[turbo_tasks::function]
    pub async fn config_file_path(
        &self,
        project_path: FileSystemPath,
    ) -> Result<Vc<FileSystemPath>> {
        Ok(project_path.join(&self.config_file_name)?.cell())
    }

    #[turbo_tasks::function]
    pub fn bundle_pages_router_dependencies(&self) -> Vc<bool> {
        Vc::cell(self.bundle_pages_router_dependencies.unwrap_or_default())
    }

    #[turbo_tasks::function]
    pub fn enable_react_production_profiling(&self) -> Vc<bool> {
        Vc::cell(self.react_production_profiling.unwrap_or_default())
    }

    #[turbo_tasks::function]
    pub fn server_external_packages(&self) -> Vc<Vec<RcStr>> {
        Vc::cell(
            self.server_external_packages
                .as_ref()
                .cloned()
                .unwrap_or_default(),
        )
    }

    #[turbo_tasks::function]
    pub fn is_standalone(&self) -> Vc<bool> {
        Vc::cell(self.output == Some(OutputType::Standalone))
    }

    #[turbo_tasks::function]
    pub fn base_path(&self) -> Vc<Option<RcStr>> {
        Vc::cell(self.base_path.clone())
    }

    #[turbo_tasks::function]
    pub fn cache_handler(&self, project_path: FileSystemPath) -> Result<Vc<OptionFileSystemPath>> {
        if let Some(handler) = &self.cache_handler {
            Ok(Vc::cell(Some(project_path.join(handler)?)))
        } else {
            Ok(Vc::cell(None))
        }
    }

    #[turbo_tasks::function]
    pub fn compiler(&self) -> Vc<CompilerConfig> {
        self.compiler.clone().unwrap_or_default().cell()
    }

    #[turbo_tasks::function]
    pub fn env(&self) -> Vc<EnvMap> {
        // The value expected for env is Record<String, String>, but config itself
        // allows arbitrary object (https://github.com/vercel/next.js/blob/25ba8a74b7544dfb6b30d1b67c47b9cb5360cb4e/packages/next/src/server/config-schema.ts#L203)
        // then stringifies it. We do the interop here as well.
        let env = self
            .env
            .iter()
            .map(|(k, v)| {
                (
                    k.as_str().into(),
                    if let JsonValue::String(s) = v {
                        // A string value is kept, calling `to_string` would wrap in to quotes.
                        s.as_str().into()
                    } else {
                        v.to_string().into()
                    },
                )
            })
            .collect();

        Vc::cell(env)
    }

    #[turbo_tasks::function]
    pub fn image_config(&self) -> Vc<ImageConfig> {
        self.images.clone().cell()
    }

    #[turbo_tasks::function]
    pub fn page_extensions(&self) -> Vc<Vec<RcStr>> {
        // Sort page extensions by length descending. This mirrors the Webpack behavior in Next.js,
        // which just builds a regex alternative, which greedily matches the longest
        // extension: https://github.com/vercel/next.js/blob/32476071fe331948d89a35c391eb578aed8de979/packages/next/src/build/entries.ts#L409
        let mut extensions = self.page_extensions.clone();
        extensions.sort_by_key(|ext| std::cmp::Reverse(ext.len()));
        Vc::cell(extensions)
    }

    #[turbo_tasks::function]
    pub fn is_global_not_found_enabled(&self) -> Vc<bool> {
        Vc::cell(self.experimental.global_not_found.unwrap_or_default())
    }

    #[turbo_tasks::function]
    pub fn transpile_packages(&self) -> Vc<Vec<RcStr>> {
        Vc::cell(self.transpile_packages.clone().unwrap_or_default())
    }

    #[turbo_tasks::function]
    pub async fn webpack_rules(
        self: Vc<Self>,
        project_path: FileSystemPath,
    ) -> Result<Vc<WebpackRules>> {
        let this = self.await?;
        let Some(turbo_rules) = this.turbopack.as_ref().map(|t| &t.rules) else {
            return Ok(Vc::cell(Vec::new()));
        };
        if turbo_rules.is_empty() {
            return Ok(Vc::cell(Vec::new()));
        }
        let mut rules = Vec::new();
        for (glob, rule_collection) in turbo_rules.iter() {
            fn transform_loaders(
                loaders: &mut dyn Iterator<Item = &LoaderItem>,
            ) -> ResolvedVc<WebpackLoaderItems> {
                ResolvedVc::cell(
                    loaders
                        .map(|item| match item {
                            LoaderItem::LoaderName(name) => WebpackLoaderItem {
                                loader: name.clone(),
                                options: Default::default(),
                            },
                            LoaderItem::LoaderOptions(options) => options.clone(),
                        })
                        .collect(),
                )
            }
            for item in &rule_collection.0 {
                match item {
                    RuleConfigCollectionItem::Shorthand(loaders) => {
                        rules.push((
                            glob.clone(),
                            LoaderRuleItem {
                                loaders: transform_loaders(&mut [loaders].into_iter()),
                                rename_as: None,
                                condition: None,
                                module_type: None,
                            },
                        ));
                    }
                    RuleConfigCollectionItem::Full(RuleConfigItem {
                        loaders,
                        rename_as,
                        condition,
                        module_type,
                    }) => {
                        // If the extension contains a wildcard, and the rename_as does not,
                        // emit an issue to prevent users from encountering duplicate module
                        // names.
                        if glob.contains("*")
                            && let Some(rename_as) = rename_as.as_ref()
                            && !rename_as.contains("*")
                        {
                            InvalidLoaderRuleRenameAsIssue {
                                glob: glob.clone(),
                                config_file_path: self
                                    .config_file_path(project_path.clone())
                                    .owned()
                                    .await?,
                                rename_as: rename_as.clone(),
                            }
                            .resolved_cell()
                            .emit();
                        }

                        // convert from Next.js-specific condition type to internal Turbopack
                        // condition type
                        let condition = if let Some(condition) = condition {
                            match ConditionItem::try_from(condition.clone()) {
                                Ok(cond) => Some(cond),
                                Err(err) => {
                                    InvalidLoaderRuleConditionIssue {
                                        error_string: RcStr::from(err.to_string()),
                                        condition: condition.clone(),
                                        config_file_path: self
                                            .config_file_path(project_path.clone())
                                            .owned()
                                            .await?,
                                    }
                                    .resolved_cell()
                                    .emit();
                                    None
                                }
                            }
                        } else {
                            None
                        };
                        rules.push((
                            glob.clone(),
                            LoaderRuleItem {
                                loaders: transform_loaders(&mut loaders.iter()),
                                rename_as: rename_as.clone(),
                                condition,
                                module_type: module_type.clone(),
                            },
                        ));
                    }
                }
            }
        }
        Ok(Vc::cell(rules))
    }

    #[turbo_tasks::function]
    pub fn resolve_alias_options(&self) -> Result<Vc<ResolveAliasMap>> {
        let Some(resolve_alias) = self
            .turbopack
            .as_ref()
            .and_then(|t| t.resolve_alias.as_ref())
        else {
            return Ok(ResolveAliasMap::cell(ResolveAliasMap::default()));
        };
        let alias_map: ResolveAliasMap = resolve_alias.try_into()?;
        Ok(alias_map.cell())
    }

    #[turbo_tasks::function]
    pub fn resolve_extension(&self) -> Vc<ResolveExtensions> {
        let Some(resolve_extensions) = self
            .turbopack
            .as_ref()
            .and_then(|t| t.resolve_extensions.as_ref())
        else {
            return Vc::cell(None);
        };
        Vc::cell(Some(resolve_extensions.clone()))
    }

    #[turbo_tasks::function]
    pub fn import_externals(&self) -> Result<Vc<bool>> {
        Ok(Vc::cell(match self.experimental.esm_externals {
            Some(EsmExternals::Bool(b)) => b,
            Some(EsmExternals::Loose(_)) => bail!("esmExternals = \"loose\" is not supported"),
            None => true,
        }))
    }

    #[turbo_tasks::function]
    pub fn inline_css(&self) -> Vc<bool> {
        Vc::cell(self.experimental.inline_css.unwrap_or(false))
    }

    #[turbo_tasks::function]
    pub fn mdx_rs(&self) -> Vc<OptionalMdxTransformOptions> {
        let options = &self.experimental.mdx_rs;

        let options = match options {
            Some(MdxRsOptions::Boolean(true)) => OptionalMdxTransformOptions(Some(
                MdxTransformOptions {
                    provider_import_source: Some(mdx_import_source_file()),
                    ..Default::default()
                }
                .resolved_cell(),
            )),
            Some(MdxRsOptions::Option(options)) => OptionalMdxTransformOptions(Some(
                MdxTransformOptions {
                    provider_import_source: Some(
                        options
                            .provider_import_source
                            .clone()
                            .unwrap_or(mdx_import_source_file()),
                    ),
                    ..options.clone()
                }
                .resolved_cell(),
            )),
            _ => OptionalMdxTransformOptions(None),
        };

        options.cell()
    }

    #[turbo_tasks::function]
    pub fn modularize_imports(&self) -> Vc<ModularizeImports> {
        Vc::cell(self.modularize_imports.clone().unwrap_or_default())
    }

    #[turbo_tasks::function]
    pub fn dist_dir(&self) -> Vc<RcStr> {
        Vc::cell(self.dist_dir.clone())
    }
    #[turbo_tasks::function]
    pub fn dist_dir_root(&self) -> Vc<RcStr> {
        Vc::cell(self.dist_dir_root.clone())
    }

    #[turbo_tasks::function]
    pub fn cache_handlers(&self, project_path: FileSystemPath) -> Result<Vc<FileSystemPathVec>> {
        if let Some(handlers) = &self.cache_handlers {
            Ok(Vc::cell(
                handlers
                    .values()
                    .map(|h| project_path.join(h))
                    .collect::<Result<Vec<_>>>()?,
            ))
        } else {
            Ok(Vc::cell(vec![]))
        }
    }

    #[turbo_tasks::function]
    pub fn cache_handlers_map(&self) -> Vc<CacheHandlersMap> {
        Vc::cell(self.cache_handlers.clone().unwrap_or_default())
    }

    #[turbo_tasks::function]
    pub fn experimental_swc_plugins(&self) -> Vc<SwcPlugins> {
        Vc::cell(self.experimental.swc_plugins.clone().unwrap_or_default())
    }

    #[turbo_tasks::function]
    pub fn experimental_swc_env_options(&self) -> Vc<OptionSwcEnvOptions> {
        Vc::cell(self.experimental.swc_env_options.clone())
    }

    #[turbo_tasks::function]
    pub fn experimental_sri(&self) -> Vc<OptionSubResourceIntegrity> {
        Vc::cell(self.experimental.sri.clone())
    }

    #[turbo_tasks::function]
    pub fn experimental_turbopack_use_builtin_babel(&self) -> Vc<Option<bool>> {
        Vc::cell(self.experimental.turbopack_use_builtin_babel)
    }

    #[turbo_tasks::function]
    pub fn experimental_turbopack_use_builtin_sass(&self) -> Vc<Option<bool>> {
        Vc::cell(self.experimental.turbopack_use_builtin_sass)
    }

    #[turbo_tasks::function]
    pub fn experimental_turbopack_local_postcss_config(&self) -> Vc<Option<bool>> {
        Vc::cell(self.experimental.turbopack_local_postcss_config)
    }

    #[turbo_tasks::function]
    pub fn react_compiler_options(&self) -> Vc<OptionalReactCompilerOptions> {
        let options = &self.react_compiler;

        let options = match options {
            Some(ReactCompilerOptionsOrBoolean::Boolean(true)) => {
                OptionalReactCompilerOptions(Some(ReactCompilerOptions::default().resolved_cell()))
            }
            Some(ReactCompilerOptionsOrBoolean::Option(options)) => OptionalReactCompilerOptions(
                Some(ReactCompilerOptions { ..options.clone() }.resolved_cell()),
            ),
            _ => OptionalReactCompilerOptions(None),
        };

        options.cell()
    }

    #[turbo_tasks::function]
    pub fn sass_config(&self) -> Vc<JsonValue> {
        Vc::cell(self.sass_options.clone().unwrap_or_default())
    }

    #[turbo_tasks::function]
    pub fn skip_proxy_url_normalize(&self) -> Vc<bool> {
        Vc::cell(self.skip_proxy_url_normalize.unwrap_or(false))
    }

    #[turbo_tasks::function]
    pub fn skip_trailing_slash_redirect(&self) -> Vc<bool> {
        Vc::cell(self.skip_trailing_slash_redirect.unwrap_or(false))
    }

    /// Returns the final asset prefix. If an assetPrefix is set, it's used.
    /// Otherwise, the basePath is used.
    #[turbo_tasks::function]
    pub async fn computed_asset_prefix(self: Vc<Self>) -> Result<Vc<RcStr>> {
        let this = self.await?;

        Ok(Vc::cell(
            format!(
                "{}/_next/",
                if let Some(asset_prefix) = &this.asset_prefix {
                    asset_prefix
                } else {
                    this.base_path.as_ref().map_or("", |b| b.as_str())
                }
                .trim_end_matches('/')
            )
            .into(),
        ))
    }

    /// Returns the suffix to use for chunk loading.
    #[turbo_tasks::function]
    pub fn asset_suffix_path(&self) -> Vc<Option<RcStr>> {
        let needs_dpl_id = self
            .experimental
            .supports_immutable_assets
            .is_none_or(|f| !f);

        Vc::cell(
            needs_dpl_id
                .then_some(self.deployment_id.as_ref())
                .flatten()
                .map(|id| format!("?dpl={id}").into()),
        )
    }

    /// Whether to enable immutable assets, which uses a different asset suffix, and writes a
    /// .next/immutable-static-hashes.json manifest.
    #[turbo_tasks::function]
    pub fn enable_immutable_assets(&self) -> Vc<bool> {
        Vc::cell(self.experimental.supports_immutable_assets == Some(true))
    }

    #[turbo_tasks::function]
    pub fn client_static_folder_name(&self) -> Vc<RcStr> {
        Vc::cell(
            if self.experimental.supports_immutable_assets == Some(true) {
                // Ends up as `_next/static/immutable`
                rcstr!("static/immutable")
            } else {
                rcstr!("static")
            },
        )
    }

    #[turbo_tasks::function]
    pub fn enable_taint(&self) -> Vc<bool> {
        Vc::cell(self.experimental.taint.unwrap_or(false))
    }

    #[turbo_tasks::function]
    pub fn enable_transition_indicator(&self) -> Vc<bool> {
        Vc::cell(self.experimental.transition_indicator.unwrap_or(false))
    }

    #[turbo_tasks::function]
    pub fn enable_gesture_transition(&self) -> Vc<bool> {
        Vc::cell(self.experimental.gesture_transition.unwrap_or(false))
    }

    #[turbo_tasks::function]
    pub fn enable_cache_components(&self) -> Vc<bool> {
        Vc::cell(self.cache_components.unwrap_or(false))
    }

    #[turbo_tasks::function]
    pub fn enable_use_cache(&self) -> Vc<bool> {
        Vc::cell(
            self.experimental
                .use_cache
                // "use cache" was originally implicitly enabled with the
                // cacheComponents flag, so we transfer the value for cacheComponents to the
                // explicit useCache flag to ensure backwards compatibility.
                .unwrap_or(self.cache_components.unwrap_or(false)),
        )
    }

    #[turbo_tasks::function]
    pub fn enable_root_params(&self) -> Vc<bool> {
        Vc::cell(
            self.experimental
                .root_params
                // rootParams should be enabled implicitly in cacheComponents.
                .unwrap_or(self.cache_components.unwrap_or(false)),
        )
    }

    #[turbo_tasks::function]
    pub fn should_append_server_deployment_id_at_runtime(&self) -> Vc<bool> {
        let needs_dpl_id = self
            .experimental
            .supports_immutable_assets
            .is_none_or(|f| !f);

        Vc::cell(
            needs_dpl_id
                && self
                    .experimental
                    .runtime_server_deployment_id
                    .unwrap_or(false),
        )
    }

    #[turbo_tasks::function]
    pub fn cache_kinds(&self) -> Vc<CacheKinds> {
        let mut cache_kinds = CacheKinds::default();

        if let Some(handlers) = self.cache_handlers.as_ref() {
            cache_kinds.extend(handlers.keys().cloned());
        }

        cache_kinds.cell()
    }

    #[turbo_tasks::function]
    pub fn optimize_package_imports(&self) -> Vc<Vec<RcStr>> {
        Vc::cell(
            self.experimental
                .optimize_package_imports
                .clone()
                .unwrap_or_default(),
        )
    }

    #[turbo_tasks::function]
    pub fn tree_shaking_mode_for_foreign_code(
        &self,
        _is_development: bool,
    ) -> Vc<OptionTreeShaking> {
        OptionTreeShaking(match self.experimental.turbopack_tree_shaking {
            Some(false) => Some(TreeShakingMode::ReexportsOnly),
            Some(true) => Some(TreeShakingMode::ModuleFragments),
            None => Some(TreeShakingMode::ReexportsOnly),
        })
        .cell()
    }

    #[turbo_tasks::function]
    pub fn tree_shaking_mode_for_user_code(&self, _is_development: bool) -> Vc<OptionTreeShaking> {
        OptionTreeShaking(match self.experimental.turbopack_tree_shaking {
            Some(false) => Some(TreeShakingMode::ReexportsOnly),
            Some(true) => Some(TreeShakingMode::ModuleFragments),
            None => Some(TreeShakingMode::ReexportsOnly),
        })
        .cell()
    }

    #[turbo_tasks::function]
    pub async fn turbopack_remove_unused_imports(
        self: Vc<Self>,
        mode: Vc<NextMode>,
    ) -> Result<Vc<bool>> {
        let remove_unused_imports = self
            .await?
            .experimental
            .turbopack_remove_unused_imports
            .unwrap_or(matches!(*mode.await?, NextMode::Build));

        if remove_unused_imports && !*self.turbopack_remove_unused_exports(mode).await? {
            bail!(
                "`experimental.turbopackRemoveUnusedImports` cannot be enabled without also \
                 enabling `experimental.turbopackRemoveUnusedExports`"
            );
        }

        Ok(Vc::cell(remove_unused_imports))
    }

    #[turbo_tasks::function]
    pub async fn turbopack_remove_unused_exports(&self, mode: Vc<NextMode>) -> Result<Vc<bool>> {
        Ok(Vc::cell(
            self.experimental
                .turbopack_remove_unused_exports
                .unwrap_or(matches!(*mode.await?, NextMode::Build)),
        ))
    }

    #[turbo_tasks::function]
    pub fn turbopack_infer_module_side_effects(&self) -> Vc<bool> {
        Vc::cell(
            self.experimental
                .turbopack_infer_module_side_effects
                .unwrap_or(true),
        )
    }

    #[turbo_tasks::function]
    pub fn turbopack_plugin_runtime_strategy(&self) -> Vc<TurbopackPluginRuntimeStrategy> {
        #[cfg(feature = "process_pool")]
        let default = TurbopackPluginRuntimeStrategy::ChildProcesses;
        #[cfg(all(feature = "worker_pool", not(feature = "process_pool")))]
        let default = TurbopackPluginRuntimeStrategy::WorkerThreads;

        self.experimental
            .turbopack_plugin_runtime_strategy
            .unwrap_or(default)
            .cell()
    }

    #[turbo_tasks::function]
    pub async fn module_ids(&self, mode: Vc<NextMode>) -> Result<Vc<ModuleIds>> {
        Ok(match *mode.await? {
            // Ignore configuration in development mode, HMR only works with `named`
            NextMode::Development => ModuleIds::Named.cell(),
            NextMode::Build => self
                .experimental
                .turbopack_module_ids
                .unwrap_or(ModuleIds::Deterministic)
                .cell(),
        })
    }

    #[turbo_tasks::function]
    pub async fn turbo_minify(&self, mode: Vc<NextMode>) -> Result<Vc<bool>> {
        let minify = self.experimental.turbopack_minify;
        Ok(Vc::cell(
            minify.unwrap_or(matches!(*mode.await?, NextMode::Build)),
        ))
    }

    #[turbo_tasks::function]
    pub async fn turbo_scope_hoisting(&self, mode: Vc<NextMode>) -> Result<Vc<bool>> {
        Ok(Vc::cell(match *mode.await? {
            // Ignore configuration in development mode to not break HMR
            NextMode::Development => false,
            NextMode::Build => self.experimental.turbopack_scope_hoisting.unwrap_or(true),
        }))
    }

    #[turbo_tasks::function]
    pub async fn turbo_nested_async_chunking(
        &self,
        mode: Vc<NextMode>,
        client_side: bool,
    ) -> Result<Vc<bool>> {
        let option = if client_side {
            self.experimental
                .turbopack_client_side_nested_async_chunking
        } else {
            self.experimental
                .turbopack_server_side_nested_async_chunking
        };
        Ok(Vc::cell(if let Some(value) = option {
            value
        } else {
            match *mode.await? {
                NextMode::Development => false,
                NextMode::Build => client_side,
            }
        }))
    }

    #[turbo_tasks::function]
    pub async fn turbopack_import_type_bytes(&self) -> Vc<bool> {
        Vc::cell(
            self.experimental
                .turbopack_import_type_bytes
                .unwrap_or(false),
        )
    }

    #[turbo_tasks::function]
    pub async fn turbopack_import_type_text(&self) -> Vc<bool> {
        Vc::cell(
            self.experimental
                .turbopack_import_type_text
                .unwrap_or(false),
        )
    }

    #[turbo_tasks::function]
    pub fn lightningcss_feature_flags(
        &self,
    ) -> Result<Vc<turbopack_css::LightningCssFeatureFlags>> {
        Ok(turbopack_css::LightningCssFeatureFlags {
            include: lightningcss_features_field_mask(
                &self.experimental.lightning_css_features,
                |f| f.include.as_ref(),
            )?,
            exclude: lightningcss_features_field_mask(
                &self.experimental.lightning_css_features,
                |f| f.exclude.as_ref(),
            )?,
        }
        .cell())
    }

    #[turbo_tasks::function]
    pub async fn client_source_maps(&self, mode: Vc<NextMode>) -> Result<Vc<SourceMapsType>> {
        let input_source_maps = self
            .experimental
            .turbopack_input_source_maps
            .unwrap_or(true);
        let source_maps = self
            .experimental
            .turbopack_source_maps
            .unwrap_or(match &*mode.await? {
                NextMode::Development => true,
                NextMode::Build => self.production_browser_source_maps,
            });
        Ok(match (source_maps, input_source_maps) {
            (true, true) => SourceMapsType::Full,
            (true, false) => SourceMapsType::Partial,
            (false, _) => SourceMapsType::None,
        }
        .cell())
    }

    #[turbo_tasks::function]
    pub fn server_source_maps(&self) -> Result<Vc<SourceMapsType>> {
        let input_source_maps = self
            .experimental
            .turbopack_input_source_maps
            .unwrap_or(true);
        let source_maps = self
            .experimental
            .turbopack_source_maps
            .or(self.experimental.server_source_maps)
            .unwrap_or(true);
        Ok(match (source_maps, input_source_maps) {
            (true, true) => SourceMapsType::Full,
            (true, false) => SourceMapsType::Partial,
            (false, _) => SourceMapsType::None,
        }
        .cell())
    }

    #[turbo_tasks::function]
    pub fn turbopack_debug_ids(&self) -> Vc<bool> {
        Vc::cell(
            self.turbopack
                .as_ref()
                .and_then(|turbopack| turbopack.debug_ids)
                .unwrap_or(false),
        )
    }

    #[turbo_tasks::function]
    pub fn typescript_tsconfig_path(&self) -> Result<Vc<Option<RcStr>>> {
        Ok(Vc::cell(
            self.typescript
                .tsconfig_path
                .as_ref()
                .map(|path| path.to_owned().into()),
        ))
    }

    #[turbo_tasks::function]
    pub fn cross_origin(&self) -> Vc<CrossOrigin> {
        *self.cross_origin.resolved_cell()
    }

    #[turbo_tasks::function]
    pub fn i18n(&self) -> Vc<OptionI18NConfig> {
        Vc::cell(self.i18n.clone())
    }

    #[turbo_tasks::function]
    pub fn output(&self) -> Vc<OptionOutputType> {
        Vc::cell(self.output.clone())
    }

    #[turbo_tasks::function]
    pub fn output_file_tracing_includes(&self) -> Vc<OptionJsonValue> {
        Vc::cell(self.output_file_tracing_includes.clone())
    }

    #[turbo_tasks::function]
    pub fn output_file_tracing_excludes(&self) -> Vc<OptionJsonValue> {
        Vc::cell(self.output_file_tracing_excludes.clone())
    }

    #[turbo_tasks::function]
    pub fn fetch_client(&self) -> Vc<FetchClientConfig> {
        FetchClientConfig::default().cell()
    }

    #[turbo_tasks::function]
    pub async fn report_system_env_inlining(&self) -> Result<Vc<IssueSeverity>> {
        match self.experimental.report_system_env_inlining.as_deref() {
            None => Ok(IssueSeverity::Suggestion.cell()),
            Some("warn") => Ok(IssueSeverity::Warning.cell()),
            Some("error") => Ok(IssueSeverity::Error.cell()),
            _ => bail!(
                "`experimental.reportSystemEnvInlining` must be undefined, \"error\", or \"warn\""
            ),
        }
    }

    /// Returns the list of ignore-issue rules from the turbopack config,
    /// converted to the `IgnoreIssue` type used by `IssueFilter`.
    #[turbo_tasks::function]
    pub fn turbopack_ignore_issue_rules(&self) -> Result<Vc<IgnoreIssues>> {
        let rules = self
            .turbopack
            .as_ref()
            .and_then(|tp| tp.ignore_issue.as_deref())
            .unwrap_or_default()
            .iter()
            .map(|rule| {
                Ok(IgnoreIssue {
                    path: rule.path.to_ignore_pattern()?,
                    title: rule
                        .title
                        .as_ref()
                        .map(|t| t.to_ignore_pattern())
                        .transpose()?,
                    description: rule
                        .description
                        .as_ref()
                        .map(|d| d.to_ignore_pattern())
                        .transpose()?,
                })
            })
            .collect::<Result<Vec<_>>>()?;
        Ok(Vc::cell(rules))
    }

    #[turbo_tasks::function]
    pub fn output_hash_salt(&self) -> Vc<RcStr> {
        Vc::cell(
            self.experimental
                .output_hash_salt
                .clone()
                .unwrap_or_default(),
        )
    }
}

/// A subset of ts/jsconfig that next.js implicitly
/// interops with.
#[turbo_tasks::value(serialization = "custom", eq = "manual")]
#[derive(Clone, Debug, Default, PartialEq, Deserialize, Encode, Decode)]
#[serde(rename_all = "camelCase")]
pub struct JsConfig {
    #[bincode(with = "turbo_bincode::serde_self_describing")]
    compiler_options: Option<serde_json::Value>,
}

#[turbo_tasks::value_impl]
impl JsConfig {
    #[turbo_tasks::function]
    pub async fn from_string(string: Vc<RcStr>) -> Result<Vc<Self>> {
        let string = string.await?;
        let config: JsConfig = serde_json::from_str(&string)
            .with_context(|| format!("failed to parse next.config.js: {string}"))?;

        Ok(config.cell())
    }

    #[turbo_tasks::function]
    pub fn compiler_options(&self) -> Vc<serde_json::Value> {
        Vc::cell(self.compiler_options.clone().unwrap_or_default())
    }
}

/// Extract either the `include` or `exclude` field from `LightningCssFeatures`
/// and convert the feature names to a bitmask.
fn lightningcss_features_field_mask(
    features: &Option<LightningCssFeatures>,
    field: impl FnOnce(&LightningCssFeatures) -> Option<&Vec<RcStr>>,
) -> Result<u32> {
    features
        .as_ref()
        .and_then(field)
        .map(|names| lightningcss_feature_names_to_mask(names))
        .unwrap_or(Ok(0))
}

/// Convert dash-case feature name strings to a lightningcss `Features` bitmask.
///
/// Uses the canonical `Features` constants from the lightningcss crate.
/// Composite names (`selectors`, `media-queries`, `colors`) OR together the
/// bits of their constituent individual features.
///
/// Feature names must match: `packages/next/src/server/config-shared.ts`
/// (`LIGHTNINGCSS_FEATURE_NAMES`)
pub fn lightningcss_feature_names_to_mask(
    names: &[impl std::ops::Deref<Target = str>],
) -> Result<u32> {
    use lightningcss::targets::Features;
    let mut mask = Features::empty();
    for name in names {
        mask |= match &**name {
            "nesting" => Features::Nesting,
            "not-selector-list" => Features::NotSelectorList,
            "dir-selector" => Features::DirSelector,
            "lang-selector-list" => Features::LangSelectorList,
            "is-selector" => Features::IsSelector,
            "text-decoration-thickness-percent" => Features::TextDecorationThicknessPercent,
            "media-interval-syntax" => Features::MediaIntervalSyntax,
            "media-range-syntax" => Features::MediaRangeSyntax,
            "custom-media-queries" => Features::CustomMediaQueries,
            "clamp-function" => Features::ClampFunction,
            "color-function" => Features::ColorFunction,
            "oklab-colors" => Features::OklabColors,
            "lab-colors" => Features::LabColors,
            "p3-colors" => Features::P3Colors,
            "hex-alpha-colors" => Features::HexAlphaColors,
            "space-separated-color-notation" => Features::SpaceSeparatedColorNotation,
            "font-family-system-ui" => Features::FontFamilySystemUi,
            "double-position-gradients" => Features::DoublePositionGradients,
            "vendor-prefixes" => Features::VendorPrefixes,
            "logical-properties" => Features::LogicalProperties,
            "light-dark" => Features::LightDark,
            // Composite groups
            "selectors" => Features::Selectors,
            "media-queries" => Features::MediaQueries,
            "colors" => Features::Colors,
            _ => bail!("Unknown lightningcss feature: {}", &**name),
        };
    }
    Ok(mask.bits())
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_serde_rule_config_item_options() {
        let json_value = serde_json::json!({
            "loaders": [],
            "as": "*.js",
            "condition": {
                "all": [
                    "production",
                    {"not": "foreign"},
                    {"any": [
                        "browser",
                        {
                            "path": { "type": "glob", "value": "*.svg"},
                            "query": {
                                "type": "regex",
                                "value": {
                                    "source": "@someQuery",
                                    "flags": ""
                                }
                            },
                            "content": {
                                "source": "@someTag",
                                "flags": ""
                            }
                        }
                    ]},
                ],
            }
        });

        let rule_config: RuleConfigItem = serde_json::from_value(json_value).unwrap();

        assert_eq!(
            rule_config,
            RuleConfigItem {
                loaders: vec![],
                rename_as: Some(rcstr!("*.js")),
                module_type: None,
                condition: Some(ConfigConditionItem::All(
                    [
                        ConfigConditionItem::Builtin(WebpackLoaderBuiltinCondition::Production),
                        ConfigConditionItem::Not(Box::new(ConfigConditionItem::Builtin(
                            WebpackLoaderBuiltinCondition::Foreign
                        ))),
                        ConfigConditionItem::Any(
                            vec![
                                ConfigConditionItem::Builtin(
                                    WebpackLoaderBuiltinCondition::Browser
                                ),
                                ConfigConditionItem::Base {
                                    path: Some(ConfigConditionPath::Glob(rcstr!("*.svg"))),
                                    content: Some(RegexComponents {
                                        source: rcstr!("@someTag"),
                                        flags: rcstr!(""),
                                    }),
                                    query: Some(ConfigConditionQuery::Regex(RegexComponents {
                                        source: rcstr!("@someQuery"),
                                        flags: rcstr!(""),
                                    })),
                                    content_type: None,
                                },
                            ]
                            .into(),
                        ),
                    ]
                    .into(),
                )),
            }
        );
    }
}