fix error + format

extra_modules/SHA.js

@@ -1,12 +1,9 @@
-import crypto from "crypto";
+import crypto from 'crypto'
 
 let SHA256_cache = {}
 
 function _SHA256(str) {
-    return crypto
-            .createHash("sha256")
-            .update(str)
-            .digest("base64");
+    return crypto.createHash('sha256').update(str).digest('base64')
 }
 
 /**
@@ -17,25 +14,23 @@ function _SHA256(str) {
  * @returns     {string}    base64 digested hash
  */
 function SHA256(str, salt, num) {
-    if (!num && num !== 0)
-        num = 1;
-    if (!str)
-        return;
-    let identifier = _SHA256(str+salt+num.toString())
-    if(SHA256_cache[identifier] != undefined) {
-        return SHA256_cache[identifier];
+    if (!num && num !== 0) num = 1
+    if (!str) return
+    let identifier = _SHA256(str + salt + num.toString())
+    if (SHA256_cache[identifier] != undefined) {
+        return SHA256_cache[identifier]
     }
-    let ret = str;
+    let ret = str
     for (let i = 0; i < num; i++) {
         ret = _SHA256(ret + salt)
     }
-    SHA256_cache[identifier] = ret;
-    setTimeout(()=>{
+    SHA256_cache[identifier] = ret
+    setTimeout(() => {
         SHA256_cache[identifier] = undefined
-    },10000) //cache for 10s
-    return ret;
+    }, 10000) //cache for 10s
+    return ret
 }
-export { SHA256 };
+export { SHA256 }
 export default {
-    SHA256: SHA256
-};
+    SHA256: SHA256,
+}