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#[doc(hidden)]
#[macro_export]
macro_rules! external_name {
("typeof") => {
"typeOf"
};
("instanceof") => {
"_instanceof"
};
("throw") => {
"_throw"
};
($s:literal) => {
$s
};
}
#[doc(hidden)]
#[macro_export]
macro_rules! helper_expr {
($field_name:ident, $s:tt) => {{
helper_expr!(::swc_common::DUMMY_SP, $field_name, $s)
}};
($span:expr, $field_name:ident, $s:tt) => {{
use swc_ecma_utils::quote_ident;
use swc_ecma_utils::ExprFactory;
debug_assert!(
!$s.starts_with("_"),
"helper! macro should not invoked with '_' prefix"
);
let mark = $crate::enable_helper!($field_name);
let span = $span.apply_mark(mark);
let external = $crate::helpers::HELPERS.with(|helper| helper.external());
if external {
quote_ident!(span, "swcHelpers")
.make_member(quote_ident!($span, $crate::external_name!($s)))
} else {
Expr::from(quote_ident!(span, concat!('_', $s)))
}
}};
}
#[doc(hidden)]
#[macro_export]
macro_rules! helper {
($field_name:ident, $s:tt) => {{
$crate::helper!(::swc_common::DUMMY_SP, $field_name, $s)
}};
($span:expr, $field_name:ident, $s:tt) => {{
use swc_ecma_utils::ExprFactory;
$crate::helper_expr!($span, $field_name, $s).as_callee()
}};
}