mirror of
https://github.com/denoland/deno
synced 2024-08-28 12:29:31 +00:00
![David Sherret](/assets/img/avatar_default.png)
* Uses diagnostics from deno_ast * Real fix for https://github.com/denoland/deno/pull/22310 * Moves `deno lint --json` code here * Upgrades swc Closes #22117 Closes #22109 Closes #21927 Closes #20993
115 lines
3.1 KiB
Rust
115 lines
3.1 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
|
|
|
|
use deno_ast::swc::ast::ExportDefaultDecl;
|
|
use deno_ast::swc::ast::ExportSpecifier;
|
|
use deno_ast::swc::ast::ModuleExportName;
|
|
use deno_ast::swc::ast::NamedExport;
|
|
use deno_ast::swc::ast::Program;
|
|
use deno_ast::swc::visit::noop_visit_type;
|
|
use deno_ast::swc::visit::Visit;
|
|
use deno_ast::swc::visit::VisitWith;
|
|
use deno_ast::ParsedSource;
|
|
|
|
/// Gets if the parsed source has a default export.
|
|
pub fn has_default_export(source: &ParsedSource) -> bool {
|
|
let mut visitor = DefaultExportFinder {
|
|
has_default_export: false,
|
|
};
|
|
let program = source.program();
|
|
let program: &Program = &program;
|
|
program.visit_with(&mut visitor);
|
|
visitor.has_default_export
|
|
}
|
|
|
|
struct DefaultExportFinder {
|
|
has_default_export: bool,
|
|
}
|
|
|
|
impl Visit for DefaultExportFinder {
|
|
noop_visit_type!();
|
|
|
|
fn visit_export_default_decl(&mut self, _: &ExportDefaultDecl) {
|
|
self.has_default_export = true;
|
|
}
|
|
|
|
fn visit_named_export(&mut self, named_export: &NamedExport) {
|
|
if named_export
|
|
.specifiers
|
|
.iter()
|
|
.any(export_specifier_has_default)
|
|
{
|
|
self.has_default_export = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
fn export_specifier_has_default(s: &ExportSpecifier) -> bool {
|
|
match s {
|
|
ExportSpecifier::Default(_) => true,
|
|
ExportSpecifier::Namespace(_) => false,
|
|
ExportSpecifier::Named(named) => {
|
|
let export_name = named.exported.as_ref().unwrap_or(&named.orig);
|
|
|
|
match export_name {
|
|
ModuleExportName::Str(_) => false,
|
|
ModuleExportName::Ident(ident) => &*ident.sym == "default",
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod test {
|
|
use deno_ast::MediaType;
|
|
use deno_ast::ModuleSpecifier;
|
|
use deno_ast::ParseParams;
|
|
use deno_ast::ParsedSource;
|
|
use deno_ast::SourceTextInfo;
|
|
|
|
use super::has_default_export;
|
|
|
|
#[test]
|
|
fn has_default_when_export_default_decl() {
|
|
let parsed_source = parse_module("export default class Class {}");
|
|
assert!(has_default_export(&parsed_source));
|
|
}
|
|
|
|
#[test]
|
|
fn has_default_when_named_export() {
|
|
let parsed_source = parse_module("export {default} from './test.ts';");
|
|
assert!(has_default_export(&parsed_source));
|
|
}
|
|
|
|
#[test]
|
|
fn has_default_when_named_export_alias() {
|
|
let parsed_source =
|
|
parse_module("export {test as default} from './test.ts';");
|
|
assert!(has_default_export(&parsed_source));
|
|
}
|
|
|
|
#[test]
|
|
fn not_has_default_when_named_export_not_exported() {
|
|
let parsed_source =
|
|
parse_module("export {default as test} from './test.ts';");
|
|
assert!(!has_default_export(&parsed_source));
|
|
}
|
|
|
|
#[test]
|
|
fn not_has_default_when_not() {
|
|
let parsed_source = parse_module("export {test} from './test.ts'; export class Test{} export * from './test';");
|
|
assert!(!has_default_export(&parsed_source));
|
|
}
|
|
|
|
fn parse_module(text: &str) -> ParsedSource {
|
|
deno_ast::parse_module(ParseParams {
|
|
specifier: ModuleSpecifier::parse("file:///mod.ts").unwrap(),
|
|
capture_tokens: false,
|
|
maybe_syntax: None,
|
|
media_type: MediaType::TypeScript,
|
|
scope_analysis: false,
|
|
text_info: SourceTextInfo::from_string(text.to_string()),
|
|
})
|
|
.unwrap()
|
|
}
|
|
}
|