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21 changes: 20 additions & 1 deletion src/compiler/lightningcss-loader.ts
Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
/* eslint-disable @typescript-eslint/no-require-imports */
export function lightningcssLoader() {
let lightningcssPath: string | undefined;

Expand Down Expand Up @@ -28,11 +29,29 @@ export function lightningcssLoader() {
);
}

// eslint-disable-next-line @typescript-eslint/no-require-imports
const { transform: lightningcss, Features } = require(
lightningcssPath,
) as typeof import("lightningcss");

try {
const lightningcssPackageJSONPath = require.resolve("../../package.json", {
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Copilot AI Oct 11, 2025

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The require.resolve path '../../package.json' is incorrect for resolving the lightningcss package.json. It should be 'lightningcss/package.json' to resolve the actual lightningcss package's package.json file.

Suggested change
const lightningcssPackageJSONPath = require.resolve("../../package.json", {
const lightningcssPackageJSONPath = require.resolve("lightningcss/package.json", {

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paths: [lightningcssPath],
});

const packageJSON = require(lightningcssPackageJSONPath) as Record<
string,
unknown
>;

if (packageJSON.version === "1.30.2") {
throw new Error(
"[react-native-css] lightningcss version 1.30.2 has a critical bug that breaks compilation. Please pin the version of lightningcss to 1.30.1; or try upgrading.",
);
}
} catch {
// Intentionally left empty
}

return {
lightningcss,
Features,
Expand Down