added web vendorsHEADmaster

1 files changed, 46 insertions, 0 deletions

diff --git a/@linaria/packages/babel/src/evaluators/visitors/ProcessStyled.ts b/@linaria/packages/babel/src/evaluators/visitors/ProcessStyled.ts
new file mode 100644
index 0000000..a9e38c5
--- /dev/null
+++ b/@linaria/packages/babel/src/evaluators/visitors/ProcessStyled.ts
@@ -0,0 +1,46 @@
+/**
+ * This visitor replaces styled components with metadata about them.
+ * CallExpression should be used to match styled components.
+ * Works out of the box for styled that wraps other component,
+ * styled.tagName are transformed to call expressions using @babel/plugin-transform-template-literals
+ * @babel/plugin-transform-template-literals is loaded as a prest, to force proper ordering. It has to run just after linaria.
+ * It is used explicitly in extractor, and loaded as a part of `prest-env` in shaker
+ */
+
+import { types as t } from '@babel/core';
+import type { NodePath } from '@babel/traverse';
+import type { CallExpression } from '@babel/types';
+import { expression } from '@babel/template';
+import getLinariaComment from '../../utils/getLinariaComment';
+
+const linariaComponentTpl = expression(
+  `{
+    displayName: %%displayName%%,
+    __linaria: {
+      className: %%className%%,
+      extends: %%extends%%
+    }
+  }`
+);
+
+export default function ProcessStyled(path: NodePath<CallExpression>) {
+  const [type, , displayName, className] = getLinariaComment(path);
+  if (!className) {
+    return;
+  }
+
+  if (type === 'css') {
+    path.replaceWith(t.stringLiteral(className));
+    return;
+  }
+
+  path.replaceWith(
+    linariaComponentTpl({
+      className: t.stringLiteral(className),
+      displayName: displayName ? t.stringLiteral(displayName) : null,
+      extends: t.isCallExpression(path.node.callee)
+        ? path.node.callee.arguments[0]
+        : t.nullLiteral(),
+    })
+  );
+}