swc_plugin_runner 0.95.2

#![cfg_attr(not(feature = "__rkyv"), allow(warnings))]
use std::{
    env, fs,
    path::{Path, PathBuf},
    process::{Command, Stdio},
    sync::Arc,
};

use anyhow::{anyhow, Error};
use serde_json::json;
#[cfg(feature = "__rkyv")]
use swc_common::plugin::serialized::PluginSerializedBytes;
use swc_common::{
    collections::AHashMap, plugin::metadata::TransformPluginMetadataContext, sync::Lazy, FileName,
    Mark,
};
use swc_ecma_ast::{EsVersion, Program};
use swc_ecma_parser::{parse_file_as_program, Syntax, TsConfig};
use swc_plugin_runner::cache::{init_plugin_module_cache_once, PLUGIN_MODULE_CACHE};
use tracing::info;

/// Returns the path to the built plugin
fn build_plugin(dir: &Path) -> Result<PathBuf, Error> {
    init_plugin_module_cache_once(&None);
    {
        let mut cmd = Command::new("cargo");
        cmd.current_dir(dir);
        cmd.args(["build", "--target=wasm32-wasi", "--release"])
            .stderr(Stdio::inherit());
        cmd.output()?;

        if !cmd
            .status()
            .expect("Exit code should be available")
            .success()
        {
            return Err(anyhow!("Failed to build plugin"));
        }
    }

    for entry in fs::read_dir(&dir.join("target").join("wasm32-wasi").join("release"))? {
        let entry = entry?;

        let s = entry.file_name().to_string_lossy().into_owned();
        if s.eq_ignore_ascii_case("swc_noop_plugin.wasm") {
            return Ok(entry.path());
        }
    }

    Err(anyhow!("Could not find built plugin"))
}

#[cfg(feature = "__rkyv")]
static PLUGIN_PATH: Lazy<PathBuf> = Lazy::new(|| {
    build_plugin(
        &PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap())
            .join("tests")
            .join("fixture")
            .join("swc_noop_plugin"),
    )
    .unwrap()
});

#[cfg(feature = "__rkyv")]
#[testing::fixture("../swc_ecma_parser/tests/tsc/*.ts")]
#[testing::fixture("../swc_ecma_parser/tests/tsc/*.tsx")]
fn internal(input: PathBuf) -> Result<(), Error> {
    let path = PLUGIN_PATH.clone();

    // run single plugin
    testing::run_test(false, |cm, _handler| {
        let fm = cm.new_source_file(FileName::Anon, "console.log(foo)".into());

        let parsed = parse_file_as_program(
            &fm,
            Syntax::Typescript(TsConfig {
                tsx: input.to_string_lossy().ends_with(".tsx"),
                ..Default::default()
            }),
            EsVersion::latest(),
            None,
            &mut vec![],
        )
        .unwrap();

        let program = PluginSerializedBytes::try_serialize(&parsed).expect("Should serializable");
        let experimental_metadata: AHashMap<String, String> = [
            (
                "TestExperimental".to_string(),
                "ExperimentalValue".to_string(),
            ),
            ("OtherTest".to_string(), "OtherVal".to_string()),
        ]
        .into_iter()
        .collect();

        info!("Creating cache");

        let mut plugin_transform_executor = swc_plugin_runner::create_plugin_transform_executor(
            &path,
            &PLUGIN_MODULE_CACHE,
            &cm,
            &Arc::new(TransformPluginMetadataContext::new(
                None,
                "development".to_string(),
                Some(experimental_metadata),
            )),
            Some(json!({ "pluginConfig": "testValue" })),
        )
        .expect("Should load plugin");

        info!("Created transform executor");

        let program_bytes = plugin_transform_executor
            .transform(&program, Mark::new(), false)
            .expect("Plugin should apply transform");

        let program: Program = program_bytes
            .deserialize()
            .expect("Should able to deserialize");

        assert_eq!(parsed, program);

        Ok(())
    })
    .expect("Should able to run single plugin transform");

    // Run multiple plugins.
    testing::run_test(false, |cm, _handler| {
        let fm = cm.new_source_file(FileName::Anon, "console.log(foo)".into());

        let parsed = parse_file_as_program(
            &fm,
            Syntax::Es(Default::default()),
            EsVersion::latest(),
            None,
            &mut vec![],
        )
        .unwrap();

        let mut serialized_program =
            PluginSerializedBytes::try_serialize(&parsed).expect("Should serializable");

        let experimental_metadata: AHashMap<String, String> = [
            (
                "TestExperimental".to_string(),
                "ExperimentalValue".to_string(),
            ),
            ("OtherTest".to_string(), "OtherVal".to_string()),
        ]
        .into_iter()
        .collect();

        let mut plugin_transform_executor = swc_plugin_runner::create_plugin_transform_executor(
            &path,
            &PLUGIN_MODULE_CACHE,
            &cm,
            &Arc::new(TransformPluginMetadataContext::new(
                None,
                "development".to_string(),
                Some(experimental_metadata.clone()),
            )),
            Some(json!({ "pluginConfig": "testValue" })),
        )
        .expect("Should load plugin");

        serialized_program = plugin_transform_executor
            .transform(&serialized_program, Mark::new(), false)
            .expect("Plugin should apply transform");

        // TODO: we'll need to apply 2 different plugins
        let mut plugin_transform_executor = swc_plugin_runner::create_plugin_transform_executor(
            &path,
            &PLUGIN_MODULE_CACHE,
            &cm,
            &Arc::new(TransformPluginMetadataContext::new(
                None,
                "development".to_string(),
                Some(experimental_metadata),
            )),
            Some(json!({ "pluginConfig": "testValue" })),
        )
        .expect("Should load plugin");

        serialized_program = plugin_transform_executor
            .transform(&serialized_program, Mark::new(), false)
            .expect("Plugin should apply transform");

        let program: Program = serialized_program
            .deserialize()
            .expect("Should able to deserialize");

        assert_eq!(parsed, program);

        Ok(())
    })
    .expect("Should able to run multiple plugins transform");

    Ok(())
}