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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use deno_core::error::AnyError;
pub struct BundleHook;
impl swc_bundler::Hook for BundleHook {
fn get_import_meta_props(
&self,
span: swc_common::Span,
module_record: &swc_bundler::ModuleRecord,
) -> Result<Vec<swc_ecmascript::ast::KeyValueProp>, AnyError> {
use swc_ecmascript::ast;
// we use custom file names, and swc "wraps" these in `<` and `>` so, we
// want to strip those back out.
let mut value = module_record.file_name.to_string();
value.pop();
value.remove(0);
Ok(vec![
ast::KeyValueProp {
key: ast::PropName::Ident(ast::Ident::new("url".into(), span)),
value: Box::new(ast::Expr::Lit(ast::Lit::Str(ast::Str {
span,
value: value.into(),
kind: ast::StrKind::Synthesized,
has_escape: false,
}))),
},
ast::KeyValueProp {
key: ast::PropName::Ident(ast::Ident::new("main".into(), span)),
value: Box::new(if module_record.is_entry {
ast::Expr::Member(ast::MemberExpr {
span,
obj: ast::ExprOrSuper::Expr(Box::new(ast::Expr::MetaProp(
ast::MetaPropExpr {
meta: ast::Ident::new("import".into(), span),
prop: ast::Ident::new("meta".into(), span),
},
))),
prop: Box::new(ast::Expr::Ident(ast::Ident::new(
"main".into(),
span,
))),
computed: false,
})
} else {
ast::Expr::Lit(ast::Lit::Bool(ast::Bool { span, value: false }))
}),
},
])
}
}
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