fix: readJsonFile/writeJsonFile types

Author: zhangfisher

src/fs/readJsonFile.ts

@@ -3,24 +3,24 @@ import fs from 'node:fs'
 import { deepMerge } from '../object/deepMerge';
 import { promises as fsPromises } from 'node:fs';
 
-export function readJsonFile(jsonfile: string,defaultValue?:Record<string,any>) {
-    let json = {}
+export function readJsonFile<T extends  Record<string,any> = Record<string,any>>(jsonfile: string,defaultValue?:Partial<T>):T | undefined {
+    let json:T = {} as T
     if(fs.existsSync(jsonfile)){
         json = JSON.parse(fs.readFileSync(jsonfile,{encoding:'utf-8'}).toString())
     }
     if(defaultValue){
-        json = deepMerge({},defaultValue,json)
+        json = deepMerge({},defaultValue,json as any) as T
     }
     return json
 }
 
-export async function readJsonFileAsync(jsonfile: string, defaultValue?: Record<string, any>) {
-    let json = {};
+export async function readJsonFileAsync<T extends Record<string,any>= Record<string,any>>(jsonfile: string, defaultValue?: Partial<T>):Promise<T | undefined> {
+    let json = {} as T 
     if (await fsPromises.access(jsonfile).then(() => true).catch(() => false)) {
         json = JSON.parse((await fsPromises.readFile(jsonfile, { encoding: 'utf-8' })).toString());
     }
     if (defaultValue) {
-        json = deepMerge({}, defaultValue, json);
+        json = deepMerge({}, defaultValue, json) as T
     }
     return json;
-}
+}

src/fs/writeJsonFile.ts

@@ -3,24 +3,24 @@ import fs from 'node:fs';
 import { deepMerge } from '../object/deepMerge';
 import { promises as fsPromises } from 'node:fs';
 
-export function writeJsonFile(jsonfile: string, data:Record<string,any>) {
-    let json = {}
+export function writeJsonFile<T extends  Record<string,any> = Record<string,any>>(jsonfile: string, data:T) {
+    let json = {} as T
     if(fs.existsSync(jsonfile)){
         json = JSON.parse(fs.readFileSync(jsonfile,{encoding:'utf-8'}).toString())
     }
-    json = deepMerge(json,data)    
+    json = deepMerge(json,data) as T   
     fs.writeFileSync(jsonfile,JSON.stringify(json,null,4))
     return json
 
 }
 
-export async function writeJsonFileAsync(jsonfile: string, data: Record<string, any>) {
-    let json = {};
+export async function writeJsonFileAsync<T extends  Record<string,any> = Record<string,any>>(jsonfile: string, data: Record<string, any>):Promise<T | undefined> {
+    let json = {} as T;
     if (await fsPromises.stat(jsonfile).then(() => true).catch(() => false)) {
         const fileContent = await fsPromises.readFile(jsonfile, { encoding: 'utf-8' });
         json = JSON.parse(fileContent.toString());
     }
-    json = deepMerge(json, data);
+    json = deepMerge(json, data) as T
     await fsPromises.writeFile(jsonfile, JSON.stringify(json, null, 4));
     return json;
 }