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