test fixtures for fn builds

Cargo.toml

@@ -5,6 +5,8 @@ members = [
 
 [workspace.dependencies]
 anyhow = "1.0.92"
+serde = { version = "1.0.213", features = ["derive"] }
+serde_json = "1.0.132"
 swc = "4.0.0"
 swc_common = { version = "3.0.0", features = ["concurrent"] }
 swc_ecma_ast = "3.0.0"
@@ -37,7 +39,7 @@ crossterm = "0.28.1"
 lazy_static = "1.5.0"
 notify = { version = "7.0.0", default-features = false, features = ["macos_fsevent"] }
 regex = "1.11.1"
-serde_json = "1.0.132"
+serde_json = { workspace = true }
 sha2 = "0.10.8"
 swc = { workspace = true }
 swc_common = { workspace = true }

fn_build/Cargo.toml

@@ -16,4 +16,6 @@ thiserror = "1.0.67"
 tokio = { workspace = true }
 
 [dev-dependencies]
+serde = { workspace = true }
+serde_json = { workspace = true }
 temp-dir = { workspace = true }

fn_build/fixtures/swc/nodejs/js/http_route/build.json

@@ -0,0 +1,3 @@
+{
+  "path": "routes/data/lambda.js"
+}

fn_build/fixtures/swc/nodejs/js/http_route/expect_debug.json

@@ -0,0 +1,6 @@
+[
+  {
+    "path": "routes/data/lambda.js",
+    "result": "Identical"
+  }
+]

fn_build/fixtures/swc/nodejs/js/http_route/expect_release.json

@@ -0,0 +1,8 @@
+[
+  {
+    "path": "routes/data/lambda.js",
+    "result": {
+      "Content": "export const DELETE=()=>{console.log(\"delete\")};"
+    }
+  }
+]

fn_build/fixtures/swc/nodejs/js/http_route/routes/data/lambda.js

@@ -0,0 +1,3 @@
+export const DELETE = () => {
+    console.log('delete')
+}

fn_build/src/lib.rs

@@ -1,13 +1,30 @@
 mod result;
+mod spec;
 mod swc;
 
 #[cfg(test)]
 mod parse_test;
 
-use crate::result::{FnBuildError, FnBuildResult, FnSource};
-use crate::swc::parse_js_fn;
+#[cfg(test)]
+mod testing;
+
+use crate::result::{FnBuild, FnBuildError, FnBuildResult, FnSource};
+use crate::spec::FnBuildSpec;
+use crate::swc::{build_js_fn, parse_js_fn};
 use std::path::PathBuf;
 
+pub async fn build_fn(build_spec: FnBuildSpec) -> FnBuildResult<FnBuild> {
+    match build_spec.entrypoint.extension() {
+        None => Err(FnBuildError::InvalidFileType),
+        Some(extension) => match extension.to_string_lossy().as_ref() {
+            "js" | "mjs" => build_js_fn(build_spec).await,
+            "py" => todo!(),
+            "ts" => todo!(),
+            &_ => Err(FnBuildError::InvalidFileType),
+        },
+    }
+}
+
 pub async fn parse_fn(entrypoint: PathBuf) -> FnBuildResult<FnSource> {
     match entrypoint.extension() {
         None => Err(FnBuildError::InvalidFileType),

fn_build/src/parse_test.rs

@@ -1,5 +1,37 @@
-use crate::{parse_fn, FnBuildError};
+use crate::spec::{BuildMode, FnBuildSpec};
+use crate::{build_fn, parse_fn, FnBuildError};
 use std::path::PathBuf;
+use temp_dir::TempDir;
+
+#[tokio::test]
+async fn build_fn_errors_for_invalid_extension() {
+    let build_dir = TempDir::new().unwrap();
+    let build_spec = FnBuildSpec {
+        entrypoint: PathBuf::from("README.md"),
+        mode: BuildMode::Debug,
+        output: build_dir.path().to_path_buf(),
+        project_dir: PathBuf::from("fixtures/swc/nodejs/js/http_route"),
+    };
+    match build_fn(build_spec).await {
+        Err(FnBuildError::InvalidFileType) => {}
+        _ => panic!(),
+    };
+}
+
+#[tokio::test]
+async fn build_fn_errors_without_extension() {
+    let build_dir = TempDir::new().unwrap();
+    let build_spec = FnBuildSpec {
+        entrypoint: PathBuf::from("README.md"),
+        mode: BuildMode::Debug,
+        output: build_dir.path().to_path_buf(),
+        project_dir: PathBuf::from("fixtures/swc/nodejs/js/http_route"),
+    };
+    match build_fn(build_spec).await {
+        Err(FnBuildError::InvalidFileType) => {}
+        _ => panic!(),
+    };
+}
 
 #[tokio::test]
 async fn parse_fn_errors_for_invalid_extension() {

fn_build/src/result.rs

@@ -1,3 +1,4 @@
+use crate::spec::FnBuildOutput;
 use std::path::PathBuf;
 
 #[derive(Clone)]
@@ -19,6 +20,13 @@ pub struct FnSource {
     pub path: PathBuf,
 }
 
+pub struct FnBuild {
+    #[allow(unused)]
+    pub entrypoint: FnSource,
+    #[allow(unused)]
+    pub output: FnBuildOutput,
+}
+
 #[derive(thiserror::Error, Debug)]
 pub enum FnBuildError {
     #[error("entrypoint file type is unsupported")]

fn_build/src/spec.rs

@@ -0,0 +1,21 @@
+use std::path::PathBuf;
+
+#[derive(Clone, Eq, Hash, PartialEq)]
+pub enum BuildMode {
+    Debug,
+    Release,
+}
+
+pub type FnBuildOutput = PathBuf;
+
+// pub enum FnBuildOutput {
+//     Archive(PathBuf),
+//     Directory(PathBuf),
+// }
+
+pub struct FnBuildSpec {
+    pub entrypoint: PathBuf,
+    pub mode: BuildMode,
+    pub output: FnBuildOutput,
+    pub project_dir: PathBuf,
+}

fn_build/src/swc/compiler.rs

@@ -53,6 +53,19 @@ impl SwcCompiler {
         }
     }
 
+    pub fn minify_js(self, path: &Path) -> CompileResult<String> {
+        self.source_with_compiler(path, |compiler, handler, source_file| {
+            compiler
+                .minify(
+                    source_file,
+                    handler,
+                    &Default::default(),
+                    Default::default(),
+                )
+                .map(|transform_output| transform_output.code)
+        })
+    }
+
     pub fn parse_es_module(self, path: &Path) -> CompileResult<Module> {
         self.source_with_compiler(path, |compiler, handler, source_file| {
             compiler
@@ -71,7 +84,7 @@ impl SwcCompiler {
         })
     }
 
-    pub fn source_with_compiler<F, R>(self, p: &Path, f: F) -> CompileResult<R>
+    fn source_with_compiler<F, R>(self, p: &Path, f: F) -> CompileResult<R>
     where
         F: FnOnce(&Compiler, &Handler, Arc<SourceFile>) -> Result<R, anyhow::Error>,
     {
@@ -82,7 +95,7 @@ impl SwcCompiler {
         self.with_compiler(|compiler, handler| f(compiler, handler, source_file))
     }
 
-    pub fn with_compiler<F, R>(self, f: F) -> CompileResult<R>
+    fn with_compiler<F, R>(self, f: F) -> CompileResult<R>
     where
         F: FnOnce(&Compiler, &Handler) -> Result<R, anyhow::Error>,
     {

fn_build/src/swc/mod.rs

@@ -1,15 +1,52 @@
-use crate::result::{FnBuildError, FnSource, ModuleImport};
+use crate::result::{FnBuild, FnBuildError, FnSource, ModuleImport};
+use crate::spec::{BuildMode, FnBuildSpec};
 use crate::swc::compiler::SwcCompiler;
 use crate::swc::visitors::ImportVisitor;
+use std::fs;
 use std::path::PathBuf;
 use swc_ecma_visit::FoldWith;
 
 mod compiler;
 mod visitors;
 
+#[cfg(test)]
+mod swc_test;
+
 #[cfg(test)]
 mod visitors_test;
 
+pub async fn build_js_fn(build_spec: FnBuildSpec) -> Result<FnBuild, FnBuildError> {
+    debug_assert!(build_spec.entrypoint.is_relative());
+    debug_assert!(build_spec.entrypoint.parent().is_some());
+    debug_assert!(build_spec.output.is_absolute());
+    debug_assert!(build_spec.output.is_dir());
+    debug_assert!(build_spec.project_dir.is_absolute());
+    debug_assert!(build_spec.project_dir.is_dir());
+    let output_file = build_spec.output.join(&build_spec.entrypoint);
+    fs::create_dir_all(output_file.parent().unwrap()).expect("mkdir -p");
+    match build_spec.mode {
+        BuildMode::Debug => {
+            fs::copy(
+                build_spec.project_dir.join(&build_spec.entrypoint),
+                output_file,
+            )
+            .expect("cp");
+        }
+        BuildMode::Release => {
+            let js_path = build_spec.project_dir.join(&build_spec.entrypoint);
+            let minified_js = SwcCompiler::new().minify_js(&js_path).unwrap();
+            fs::write(output_file, minified_js).unwrap();
+        }
+    }
+    Ok(FnBuild {
+        entrypoint: FnSource {
+            imports: Vec::new(),
+            path: build_spec.entrypoint,
+        },
+        output: build_spec.output,
+    })
+}
+
 pub async fn parse_js_fn(path: PathBuf) -> Result<FnSource, FnBuildError> {
     let compiler = SwcCompiler::new();
     let module = compiler.parse_es_module(&path).unwrap();

fn_build/src/swc/swc_test.rs

@@ -0,0 +1,22 @@
+use crate::spec::FnBuildSpec;
+use crate::swc::build_js_fn;
+use crate::testing::{run_fixtures, BuildProcess, BuildProcessResult};
+use std::path::PathBuf;
+use std::sync::Arc;
+
+struct JavaScriptBuild {}
+
+impl BuildProcess for JavaScriptBuild {
+    fn build(&self, build_spec: FnBuildSpec) -> BuildProcessResult {
+        Box::pin(build_js_fn(build_spec))
+    }
+}
+
+#[tokio::test]
+pub async fn test_nodejs_js_fixtures() {
+    run_fixtures(
+        Arc::new(Box::new(JavaScriptBuild {})),
+        PathBuf::from("fixtures/swc/nodejs/js"),
+    )
+    .await;
+}