add srt

src/utils/index.js

@@ -1,7 +1,8 @@
 import ArtPlayerError from './ArtPlayerError';
 
 export function errorHandle(condition, msg) {
-  if (!condition) {
+  const isFun = typeof condition === 'function';
+  if (isFun ? !isFun() : !condition) {
     throw new ArtPlayerError(msg);
   }
 }
@@ -43,9 +44,30 @@ export function setStyle(element, styles) {
 }
 
 export function secondToTime(second) {
-  const add0 = num => num < 10 ? `0${num}` : String(num);
+  const add0 = num => (num < 10 ? `0${num}` : String(num));
   const hour = Math.floor(second / 3600);
   const min = Math.floor((second - hour * 3600) / 60);
   const sec = Math.floor(second - hour * 3600 - min * 60);
   return (hour > 0 ? [hour, min, sec] : [min, sec]).map(add0).join(':');
 }
+
+export function deepMerge(...sources) {
+  const isObject = value => value !== null && typeof value === 'object';
+  let returnValue = {};
+  for (const source of sources) {
+    if (Array.isArray(source)) {
+      if (!Array.isArray(returnValue)) {
+        returnValue = [];
+      }
+      returnValue = [...returnValue, ...source];
+    } else if (isObject(source)) {
+      for (let [key, value] of Object.entries(source)) {
+        if (isObject(value) && Reflect.has(returnValue, key)) {
+          value = deepMerge(returnValue[key], value);
+        }
+        returnValue = { ...returnValue, [key]: value };
+      }
+    }
+  }
+  return returnValue;
+}