完成截图工具

packages/artplayer-tool-thumbnail/src/utils.js

@@ -0,0 +1,17 @@
+export function sleep(ms) {
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+export function runPromisesInSeries(ps) {
+    return ps.reduce((p, next) => p.then(next), Promise.resolve());
+}
+
+export function getFileName(name) {
+    const nameArray = name.split('.');
+    nameArray.pop();
+    return nameArray.join('.');
+}
+
+export function clamp(num, a, b) {
+    return Math.max(Math.min(num, Math.max(a, b)), Math.min(a, b));
+}