1 files changed, 38 insertions, 0 deletions
diff --git a/@linaria/packages/babel/src/utils/loadOptions.ts b/@linaria/packages/babel/src/utils/loadOptions.ts
new file mode 100644
index 0000000..8c0f0b8
--- /dev/null
+++ b/@linaria/packages/babel/src/utils/loadOptions.ts
@@ -0,0 +1,38 @@
+import cosmiconfig from 'cosmiconfig';
+import type { StrictOptions } from '../types';
+
+export type PluginOptions = StrictOptions & {
+  configFile?: string;
+};
+
+const explorer = cosmiconfig('linaria');
+
+export default function loadOptions(
+  overrides: Partial<PluginOptions> = {}
+): Partial<StrictOptions> {
+  const { configFile, ignore, ...rest } = overrides;
+
+  const result =
+    configFile !== undefined
+      ? explorer.loadSync(configFile)
+      : explorer.searchSync();
+
+  return {
+    displayName: false,
+    evaluate: true,
+    rules: [
+      {
+        // FIXME: if `rule` is not specified in a config, `@linaria/shaker` should be added as a dependency
+        // eslint-disable-next-line import/no-extraneous-dependencies
+        action: require('@linaria/shaker').default,
+      },
+      {
+        // The old `ignore` option is used as a default value for `ignore` rule.
+        test: ignore ?? /[\\/]node_modules[\\/]/,
+        action: 'ignore',
+      },
+    ],
+    ...(result ? result.config : null),
+    ...rest,
+  };
+}