diff --git a/src/public/fs/json.ts b/src/public/fs/json.ts
index 7189a3e..55d89cf 100644
--- a/src/public/fs/json.ts
+++ b/src/public/fs/json.ts
@@ -1,7 +1,7 @@
-import { IOfType } from '~/types';
 import expose from '~/utils/expose';
 import rw from './rw';
-import { IFsUpdateOptions, TContentFn, TSource } from './types';
+import { IFsUpdateOptions, TContentFn, TSource, TJsonFn } from './types';
+import { IOfType } from '~/types';
 
 export default expose(json);
 
@@ -12,15 +12,16 @@ export default expose(json);
  */
 function json(
   file: TSource,
-  fn: (
-    file: string,
-    json?: IOfType<any>
-  ) => IOfType<any> | void | Promise<IOfType<any> | void>,
+  fn: TJsonFn,
   options?: IFsUpdateOptions
 ): () => Promise<void> {
   return async () => {
-    const _fn: TContentFn = async (file, raw) => {
-      const json = await fn(file, raw ? JSON.parse(raw) : undefined);
+    const _fn: TContentFn = async (data) => {
+      Object.defineProperty(data, 'json', {
+        enumerable: true,
+        get: (): IOfType<any> => (data.raw ? JSON.parse(data.raw) : undefined)
+      });
+      const json = await fn(data);
       return json ? JSON.stringify(json, null, 2) : undefined;
     };
 
diff --git a/src/public/fs/rw/rw.ts b/src/public/fs/rw/rw.ts
index 0012c95..a18f795 100644
--- a/src/public/fs/rw/rw.ts
+++ b/src/public/fs/rw/rw.ts
@@ -26,14 +26,12 @@ export async function each(
   const cwd = process.cwd();
   file = absolute({ path: file, cwd });
   const relative = './' + path.relative(cwd, file);
-
   const doesExist = await exists(file, { fail: options.fail });
-
   const raw = doesExist ? await fs.readFile(file).then(String) : undefined;
 
   let response: string | void;
   try {
-    response = await fn(file, raw);
+    response = await fn({ file, raw });
   } catch (e) {
     throw open(e);
   }
diff --git a/src/public/fs/types.ts b/src/public/fs/types.ts
index 686386b..8dd918f 100644
--- a/src/public/fs/types.ts
+++ b/src/public/fs/types.ts
@@ -1,3 +1,5 @@
+import { IOfType } from '~/types';
+
 export type TSource =
   | string
   | string[]
@@ -10,10 +12,16 @@ export type TCopyFilterFn =
   | ((src: string, dest: string) => boolean)
   | ((src: string, dest: string) => Promise<boolean>);
 
-export type TContentFn = (
-  file: string,
-  raw?: string
-) => string | void | Promise<string | void>;
+export type TContentFn = (data: {
+  file: string;
+  raw?: string;
+}) => string | void | Promise<string | void>;
+
+export type TJsonFn = (data: {
+  file: string;
+  raw?: string;
+  json?: IOfType<any>;
+}) => IOfType<any> | void | Promise<IOfType<any> | void>;
 
 /**
  * Options taken by read *fs* functions.
diff --git a/src/public/fs/write/write.ts b/src/public/fs/write/write.ts
index e611df5..d737dd6 100644
--- a/src/public/fs/write/write.ts
+++ b/src/public/fs/write/write.ts
@@ -29,7 +29,7 @@ export async function each(
 
   if (typeof raw === 'function') {
     try {
-      raw = await raw(file);
+      raw = await raw({ file });
     } catch (err) {
       throw open(err);
     }