add json to file function

snippets/write-json-to-file.md

@@ -0,0 +1,9 @@
+### Write a JSON to a file
+
+Write a `json` object to a `.json` file.
+```js
+const fs = require('fs')
+
+const jsonToFile = (obj, filename) => fs.writeFile(`${filename}.json`, JSON.stringify(obj, null, 4))
+// jsonToFile({test: "is passed"}, 'testJsonFile')
+```