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Do not patch function if already patched, support reexporting page and getServerSideProps #113

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Do not patch function if already patched, support reexporting page and getServerSideProps #113

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34 changes: 29 additions & 5 deletions tools/tools.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -9,11 +9,28 @@ export type SuperJSONProps<P> = P & {
_superjson?: ReturnType<typeof SuperJSON.serialize>["meta"];
};

let alreadyPatched = '__alreadyPatchedBySuperJSONPlugin';

function isAlreadyPatched(gssp: any) {
return gssp && gssp[alreadyPatched];
}

function markAsPatched(gssp: any) {
if (!gssp) {
return gssp;
}
gssp[alreadyPatched] = true;
}

export function withSuperJSONProps<P extends JSX.IntrinsicAttributes>(
gssp: GetServerSideProps<P>,
exclude: string[] = []
): GetServerSideProps<SuperJSONProps<P>> {
return async function withSuperJSON(...args) {
if (isAlreadyPatched(gssp)) {
return gssp;
}

return markAsPatched(async function withSuperJSON(...args) {
const result = await gssp(...args);

if (!("props" in result)) {
Expand Down Expand Up @@ -48,11 +65,15 @@ export function withSuperJSONProps<P extends JSX.IntrinsicAttributes>(
...result,
props,
};
};
});
}

export function withSuperJSONInitProps(gip: any, exclude: string[] = []): any {
return async function withSuperJSON(...args: any[]) {
if (isAlreadyPatched(gip)) {
return gip;
}

return markAsPatched(async function withSuperJSON(...args: any[]) {
const result = await gip(...args);

const excludedPropValues = exclude.map((propKey) => {
Expand All @@ -79,7 +100,7 @@ export function withSuperJSONInitProps(gip: any, exclude: string[] = []): any {
...result,
...props,
};
};
});
}

export function deserializeProps<P>(serializedProps: SuperJSONProps<P>): P {
Expand All @@ -90,13 +111,16 @@ export function deserializeProps<P>(serializedProps: SuperJSONProps<P>): P {
export function withSuperJSONPage<P extends JSX.IntrinsicAttributes>(
Page: React.ComponentType<P>
): React.ComponentType<SuperJSONProps<P>> {
if (isAlreadyPatched(Page)) {
return Page;
}
function WithSuperJSON(serializedProps: SuperJSONProps<P>) {
return <Page {...deserializeProps<P>(serializedProps)} />;
}

hoistNonReactStatics(WithSuperJSON, Page);

return WithSuperJSON;
return markAsPatched(WithSuperJSON);
}

export function serialize<P>(props: P): SuperJSONProps<P> {
Expand Down