分离部分工具函数

packages/artplayer/src/utils/error.js

@@ -0,0 +1,16 @@
+export class ArtPlayerError extends Error {
+    constructor(message, context) {
+        super(message);
+        if (typeof Error.captureStackTrace === 'function') {
+            Error.captureStackTrace(this, context || this.constructor);
+        }
+        this.name = 'ArtPlayerError';
+    }
+}
+
+export function errorHandle(condition, msg) {
+    const isFun = typeof condition === 'function';
+    if (isFun ? !isFun() : !condition) {
+        throw new ArtPlayerError(msg);
+    }
+}