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fix(types): Optional JSON params where undefined is not valid #134

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merged 4 commits into from
Aug 31, 2023
Merged

fix(types): Optional JSON params where undefined is not valid #134

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2d3deaa
fix(types): Optional JSON params where undefined is not valid
legobeat Aug 29, 2023
728519a
superstruct-optional in value only; preserve type
legobeat Aug 29, 2023
c8306e5
types: Params always optional in InferWithParams
legobeat Aug 29, 2023
45c2236
Reduce type duplication by excluding `undefined`
Mrtenz Aug 30, 2023
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22 changes: 10 additions & 12 deletions src/json.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,6 @@ import {
nullable,
number,
object,
omit,
optional,
record,
string,
Expand Down Expand Up @@ -178,36 +177,35 @@ export type JsonRpcError = OptionalField<
>;

export const JsonRpcParamsStruct: Struct<Json[] | Record<string, Json>, null> =
optional(union([record(string(), JsonStruct), array(JsonStruct)])) as any;
union([record(string(), JsonStruct), array(JsonStruct)]);

export type JsonRpcParams = Json[] | Record<string, Json>;

export const JsonRpcRequestStruct = object({
id: JsonRpcIdStruct,
jsonrpc: JsonRpcVersionStruct,
method: string(),
params: JsonRpcParamsStruct,
params: optional(JsonRpcParamsStruct),
});

export type InferWithParams<
Type extends Struct<any>,
Params extends JsonRpcParams,
> = Omit<Infer<Type>, 'params'> &
(keyof Params extends undefined
? {
params?: Params;
}
: {
params: Params;
});
> = Omit<Infer<Type>, 'params'> & {
params?: Exclude<Params, undefined>;
};

/**
* A JSON-RPC request object.
*/
export type JsonRpcRequest<Params extends JsonRpcParams = JsonRpcParams> =
InferWithParams<typeof JsonRpcRequestStruct, Params>;

export const JsonRpcNotificationStruct = omit(JsonRpcRequestStruct, ['id']);
export const JsonRpcNotificationStruct = object({
jsonrpc: JsonRpcVersionStruct,
method: string(),
params: optional(JsonRpcParamsStruct),
});

/**
* A JSON-RPC notification object.
Expand Down