Uncaught TypeError: Cannot set property 'Promise' of undefined

[onlonely]

编译无报错,启动后在微信开发者工具中报错如下

VM249 WAService.js:1 Uncaught TypeError: Cannot set property 'Promise' of undefined
at index.js? [sm]:4
at require (VM249 WAService.js:1)
at VM249 WAService.js:1
at app.js? [sm]:4
at require (VM249 WAService.js:1)
at :1:1
at HTMLScriptElement.scriptLoaded (appservice?t=1574227100476:1830)
at HTMLScriptElement.script.onload (appservice?t=1574227100476:1842)

[Gcaufy]

关闭 es6 -> es5 试试