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fix(types): argument type and response type will be the same #1

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fix(types): argument type and response type will be the same #1

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33e569a
fix(types): argument type and response type will be the same
EdamAme-x Nov 7, 2024
0b43c6a
Update index.ts
EdamAme-x Nov 7, 2024
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33 changes: 21 additions & 12 deletions index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -8,28 +8,37 @@
* @module
*/

export type JsonValue = number | string | boolean | null | JsonValue[] | { [key: string]: JsonValue };
export type JsonPrimitive = number | string | boolean | null;
export type JsonArray = JsonValue[];
export type JsonObject = { [key: string]: JsonValue };

/**
* This function clones the given JSON value.
*
* @param value The JSON value to be cloned. There are two invariants. 1) It must not contain circles
* as JSON does not allow it. This function will cause infinite loop for such values by
* design. 2) It must contain JSON values only. Other values like `Date`, `Regexp`, `Map`,
* `Set`, `Buffer`, ... are not allowed.
* @returns The cloned JSON value.
*/
export default function cloneJSON(value: JsonValue): JsonValue {
export type JsonValue = JsonPrimitive | JsonArray | JsonObject;

function _cloneJSON(value: JsonValue): JsonValue {
if (typeof value !== 'object' || value === null) {
return value;
} else if (Array.isArray(value)) {
return value.map(e => (typeof e !== 'object' || e === null ? e : cloneJSON(e)));
} else {
const ret: { [key: string]: JsonValue } = {};
const ret: JsonObject = {};
for (const k in value) {
const v = value[k];
ret[k] = typeof v !== 'object' || v === null ? v : cloneJSON(v);
}
return ret;
}
}

/**
* This function clones the given JSON value.
*
* @param value The JSON value to be cloned. There are two invariants. 1) It must not contain circles
* as JSON does not allow it. This function will cause infinite loop for such values by
* design. 2) It must contain JSON values only. Other values like `Date`, `Regexp`, `Map`,
* `Set`, `Buffer`, ... are not allowed.
* @returns The cloned JSON value.
*/
function cloneJSON<V extends JsonValue>(value: V): V {
// note: autoregressive function
return _cloneJSON(value) as V
}