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ecma_integration.rs
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ecma_integration.rs
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#![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, errors::HANDLER, plugin::metadata::TransformPluginMetadataContext,
sync::Lazy, FileName, Mark,
};
use swc_ecma_ast::{CallExpr, Callee, EsVersion, Expr, Lit, MemberExpr, Program, Str};
use swc_ecma_parser::{parse_file_as_program, EsConfig, Syntax};
use swc_ecma_visit::{Visit, VisitWith};
use swc_plugin_runner::cache::PluginModuleCache;
/// Returns the path to the built plugin
fn build_plugin(dir: &Path) -> Result<PathBuf, Error> {
{
let mut cmd = Command::new("cargo");
cmd.current_dir(dir);
cmd.args(["build", "--target=wasm32-wasi"])
.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("debug"))? {
let entry = entry?;
let s = entry.file_name().to_string_lossy().into_owned();
if s.eq_ignore_ascii_case("swc_internal_plugin.wasm") {
return Ok(entry.path());
}
}
Err(anyhow!("Could not find built plugin"))
}
struct TestVisitor {
pub plugin_transform_found: bool,
}
impl Visit for TestVisitor {
fn visit_call_expr(&mut self, call: &CallExpr) {
if let Callee::Expr(expr) = &call.callee {
if let Expr::Member(MemberExpr { obj, .. }) = &**expr {
if let Expr::Ident(ident) = &**obj {
if ident.sym == *"console" {
let args = &*(call.args[0].expr);
if let Expr::Lit(Lit::Str(Str { value, .. })) = args {
self.plugin_transform_found = value == "changed_via_plugin";
}
}
}
}
}
}
}
#[cfg(feature = "__rkyv")]
#[test]
fn internal() -> Result<(), Error> {
let path = build_plugin(
&PathBuf::from(env::var("CARGO_MANIFEST_DIR")?)
.join("tests")
.join("fixture")
.join("swc_internal_plugin"),
)?;
// run single plugin
testing::run_test(false, |cm, _handler| {
let fm = cm.new_source_file(FileName::Anon, "console.log(foo)".into());
let program = parse_file_as_program(
&fm,
Syntax::Es(EsConfig {
..Default::default()
}),
EsVersion::latest(),
None,
&mut vec![],
)
.unwrap();
let program = PluginSerializedBytes::try_serialize(&program).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 cache: Lazy<PluginModuleCache> = Lazy::new(PluginModuleCache::new);
let mut plugin_transform_executor = swc_plugin_runner::create_plugin_transform_executor(
&path,
&cache,
&cm,
&Arc::new(TransformPluginMetadataContext::new(
None,
"development".to_string(),
Some(experimental_metadata),
)),
Some(json!({ "pluginConfig": "testValue" })),
)
.expect("Should load plugin");
assert!(!plugin_transform_executor
.plugin_core_diag
.pkg_version
.is_empty());
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");
let mut visitor = TestVisitor {
plugin_transform_found: false,
};
program.visit_with(&mut visitor);
visitor
.plugin_transform_found
.then(|| visitor.plugin_transform_found)
.ok_or(())
})
.expect("Should able to run single plugin transform");
// run single plugin with handler
testing::run_test2(false, |cm, handler| {
let fm = cm.new_source_file(FileName::Anon, "console.log(foo)".into());
let program = parse_file_as_program(
&fm,
Syntax::Es(EsConfig {
..Default::default()
}),
EsVersion::latest(),
None,
&mut vec![],
)
.unwrap();
let program = PluginSerializedBytes::try_serialize(&program).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 cache: Lazy<PluginModuleCache> = Lazy::new(PluginModuleCache::new);
let _res = HANDLER.set(&handler, || {
let mut plugin_transform_executor =
swc_plugin_runner::create_plugin_transform_executor(
&path,
&cache,
&cm,
&Arc::new(TransformPluginMetadataContext::new(
None,
"development".to_string(),
Some(experimental_metadata),
)),
Some(json!({ "pluginConfig": "testValue" })),
)
.expect("Should load plugin");
plugin_transform_executor
.transform(&program, Mark::new(), false)
.expect("Plugin should apply transform")
});
Ok(())
})
.expect("Should able to run single plugin transform with handler");
// Run multiple plugins.
testing::run_test(false, |cm, _handler| {
let fm = cm.new_source_file(FileName::Anon, "console.log(foo)".into());
let program = parse_file_as_program(
&fm,
Syntax::Es(EsConfig {
..Default::default()
}),
EsVersion::latest(),
None,
&mut vec![],
)
.unwrap();
let mut serialized_program =
PluginSerializedBytes::try_serialize(&program).expect("Should serializable");
let cache: Lazy<PluginModuleCache> = Lazy::new(PluginModuleCache::new);
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,
&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,
&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");
let mut visitor = TestVisitor {
plugin_transform_found: false,
};
program.visit_with(&mut visitor);
visitor
.plugin_transform_found
.then(|| visitor.plugin_transform_found)
.ok_or(())
})
.expect("Should able to run multiple plugins transform");
Ok(())
}