- 当前 Bug 的表现（可附上截图）

- 预期表现

- 复现路径

- 提供一个最简复现 Demo

[publib]:146 error run publib TypeError: Cannot read property 'toLowerCase' of undefined

    at a.g ([publib]:1)

    at new a ([publib]:1)

    at [publib]:1

    at Object.u [as onReady] ([publib]:1)

    at Object.<anonymous> ([publib]:1)

    at o ([publib]:1)

    at i ([publib]:1)

    at __waServiceInit__ ([publib]:1)

    at __doWAServiceInit__ ([publib]:1)

    at [publib]:1

value @ [publib]:146

[publib]:833 ReferenceError: define is not defined

    at app.js:1

    at ContextifyScript.Script.runInContext (vm.js:59)

    at Object.runInContext (vm.js:120)

    at loadCode ([publib]:827)

    at handleInitUserCode ([publib]:811)

    at handleSetupContext ([publib]:1221)

    at handleProcessMessage ([publib]:1230)

    at WebSocket.ws.on ([publib]:1458)

    at emitOne (events.js:115)

    at WebSocket.emit (events.js:210)

loadCode @ [publib]:833

[publib]:833 ReferenceError: define is not defined

    at canvasdrawer.js:1

    at ContextifyScript.Script.runInContext (vm.js:59)

    at Object.runInContext (vm.js:120)

    at loadCode ([publib]:827)

    at handleInitUserCode ([publib]:811)

    at handleSetupContext ([publib]:1221)

    at handleProcessMessage ([publib]:1230)

    at WebSocket.ws.on ([publib]:1458)

    at emitOne (events.js:115)

    at WebSocket.emit (events.js:210)

loadCode @ [publib]:833

[publib]:833 ReferenceError: define is not defined

    at scan.js:1

    at ContextifyScript.Script.runInContext (vm.js:59)

    at Object.runInContext (vm.js:120)

    at loadCode ([publib]:827)

    at handleInitUserCode ([publib]:811)

    at handleSetupContext ([publib]:1221)

    at handleProcessMessage ([publib]:1230)

    at WebSocket.ws.on ([publib]:1458)

    at emitOne (events.js:115)

    at WebSocket.emit (events.js:210)

loadCode @ [publib]:833

[publib]:833 ReferenceError: define is not defined

    at index.js:1

    at ContextifyScript.Script.runInContext (vm.js:59)

    at Object.runInContext (vm.js:120)

    at loadCode ([publib]:827)

    at handleInitUserCode ([publib]:811)

    at handleSetupContext ([publib]:1221)

    at handleProcessMessage ([publib]:1230)

    at WebSocket.ws.on ([publib]:1458)

    at emitOne (events.js:115)

    at WebSocket.emit (events.js:210)

loadCode @ [publib]:833