move ProcessEnv into turbo-tasks-env (vercel/turbo#462)

make ProcessEnv a trait to allow other implemenetations of it

packages/next-swc/crates/next-core/Cargo.toml

@@ -16,6 +16,7 @@ serde = "1.0.136"
 serde_json = "1.0.85"
 tokio = { version = "1.11.0", features = ["full"] }
 turbo-tasks = { path = "../turbo-tasks" }
+turbo-tasks-env = { path = "../turbo-tasks-env" }
 turbo-tasks-fs = { path = "../turbo-tasks-fs" }
 turbopack = { path = "../turbopack" }
 turbopack-core = { path = "../turbopack-core" }

packages/next-swc/crates/next-core/src/env.rs

@@ -1,12 +1,15 @@
 use anyhow::Result;
+use turbo_tasks_env::{CommandLineProcessEnvVc, FilterProcessEnvVc, ProcessEnvVc};
 use turbo_tasks_fs::FileSystemPathVc;
-use turbopack_env::ProcessEnvVc;
+use turbopack_env::TryDotenvProcessEnvVc;
 
 /// Loads a series of dotenv files according to the precedence rules set by
 /// https://nextjs.org/docs/basic-features/environment-variables#environment-variable-load-order
 #[turbo_tasks::function]
 pub async fn load_env(project_path: FileSystemPathVc) -> Result<ProcessEnvVc> {
-    let node_env = std::env::var("NODE_ENV").unwrap_or_else(|_| "development".into());
+    let env = CommandLineProcessEnvVc::new().as_process_env();
+    let node_env = env.read("NODE_ENV").await?;
+    let node_env = node_env.as_deref().unwrap_or("development");
 
     let files = [
         Some(format!(".env.{node_env}.local")),
@@ -21,14 +24,14 @@ pub async fn load_env(project_path: FileSystemPathVc) -> Result<ProcessEnvVc> {
     .into_iter()
     .flatten();
 
-    let env = files.fold(ProcessEnvVc::from_command_line(), |prior, f| {
+    let env = files.fold(env, |prior, f| {
         let path = project_path.join(&f);
-        ProcessEnvVc::from_dotenv_file(path, Some(prior))
+        TryDotenvProcessEnvVc::new(prior, path).as_process_env()
     });
 
     Ok(env)
 }
 
 pub fn filter_for_client(env: ProcessEnvVc) -> ProcessEnvVc {
-    ProcessEnvVc::filter(env, "NEXT_PUBLIC_".to_string())
+    FilterProcessEnvVc::new(env, "NEXT_PUBLIC_".to_string()).into()
 }

packages/next-swc/crates/next-core/src/next_client/context.rs

@@ -3,6 +3,7 @@ use std::collections::HashMap;
 
 use anyhow::Result;
 use turbo_tasks::Value;
+use turbo_tasks_env::ProcessEnvVc;
 use turbo_tasks_fs::FileSystemPathVc;
 use turbopack::{
     module_options::module_options_context::{ModuleOptionsContext, ModuleOptionsContextVc},
@@ -17,7 +18,7 @@ use turbopack_core::{
 };
 use turbopack_dev_server::html_runtime_asset::HtmlRuntimeAssetVc;
 use turbopack_ecmascript::chunk::EcmascriptChunkPlaceablesVc;
-use turbopack_env::{ProcessEnvAssetVc, ProcessEnvVc};
+use turbopack_env::ProcessEnvAssetVc;
 
 use crate::{
     env::filter_for_client,

packages/next-swc/crates/next-core/src/server_rendered_source.rs

@@ -3,6 +3,7 @@ use std::collections::HashMap;
 use anyhow::Result;
 use serde_json::json;
 use turbo_tasks::{primitives::JsonValueVc, Value};
+use turbo_tasks_env::ProcessEnvVc;
 use turbo_tasks_fs::{DirectoryContent, DirectoryEntry, FileSystemEntryType, FileSystemPathVc};
 use turbopack::{
     module_options::ModuleOptionsContext, resolve_options_context::ResolveOptionsContext,
@@ -21,7 +22,7 @@ use turbopack_dev_server::source::{
     ContentSourceVc, NoContentSourceVc,
 };
 use turbopack_ecmascript::chunk::EcmascriptChunkPlaceablesVc;
-use turbopack_env::{ProcessEnvAssetVc, ProcessEnvVc};
+use turbopack_env::ProcessEnvAssetVc;
 
 use crate::{
     next_client::{

packages/next-swc/crates/next-core/src/web_entry_source.rs

@@ -2,6 +2,7 @@ use std::future::IntoFuture;
 
 use anyhow::{anyhow, Result};
 use futures::{prelude::*, stream};
+use turbo_tasks_env::ProcessEnvVc;
 use turbo_tasks_fs::FileSystemPathVc;
 use turbopack::ecmascript::EcmascriptModuleAssetVc;
 use turbopack_core::{
@@ -12,7 +13,6 @@ use turbopack_dev_server::{
     html::DevHtmlAsset,
     source::{asset_graph::AssetGraphContentSourceVc, ContentSourceVc},
 };
-use turbopack_env::ProcessEnvVc;
 
 use crate::next_client::context::{
     get_client_asset_context, get_client_chunking_context, get_resolved_client_runtime_entries,