TypeError:严格模式dexie.js上可能无法访问"caller"，"callee"和"arguments"属性

问题描述

当我调用dexie.js的count()函数时，有人可以告诉我这里发生了什么吗?

Can any one tell me what happen here when i call count() function of dexie.js:

TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them
    at eval (eval at getErrorWithStack (http://127.0.0.1:8081/elements/js/dexie.js:394:5), <anonymous>:1:19)
    at getErrorWithStack (http://127.0.0.1:8081/elements/js/dexie.js:394:5)
    at new Promise (http://127.0.0.1:8081/elements/js/dexie.js:786:29)
    at new Transaction (http://127.0.0.1:8081/elements/js/dexie.js:2756:28)
    at Dexie._createTransaction (http://127.0.0.1:8081/elements/js/dexie.js:1809:16)
    at tempTransaction (http://127.0.0.1:8081/elements/js/dexie.js:1825:28)
    at WriteableTable.getIDBObjectStore (http://127.0.0.1:8081/elements/js/dexie.js:2266:99)
    at WriteableCollection._read (http://127.0.0.1:8081/elements/js/dexie.js:3454:42)
    at WriteableCollection.count (http://127.0.0.1:8081/elements/js/dexie.js:3510:33)
    at HTMLElement.checkLoadEnoughtOfflineData (http://127.0.0.1:8081/elements/base/app-localize-behavior.html:294:73)

上面的最后一行是从我的函数中调用的:

The last line above is call from my function:

 checkLoadEnoughtOfflineData(idcheck) {
       return dbOffline.checkPageTable.where("idCheck").equals(idcheck).count();
    }

p/s:我正在使用Google Chorm 62.

p/s: I'm working with Google Chorm 62.

推荐答案

我假设您是调试器在此位置中断.这是一段代码，有意破坏严格"模式规则以生成错误，以便可以从产生的错误中提取调用堆栈.如果您可以在调试器设置中忽略此错误类型，则Chrome调试器将不再烦您.仅当Dexie.debug === true(这是从localhost服务的站点的默认设置)时，才会发生这种情况.您在控制台日志中获得的功能是未处理拒绝的异步堆栈跟踪.您可以通过设置Dexie.debug = false来明确将其关闭.

I assume you're debugger breaks at this location. It's a piece of code that intentionally breaks the "strict" mode rule in order to generate an error so that the call stack can be picked from the resulting error. If you can ignore this error type in the debugger settings, chromium debugger will stop annoying you with it. It will only happen if Dexie.debug === true (which is the default for sites served from localhost). The feature you get in your console log, is an async stack trace of unhandled rejections. You can explicitely turn it off by setting Dexie.debug = false.

来源看起来像这样:

export function getErrorWithStack() {
    "use strict";
    if (NEEDS_THROW_FOR_STACK) try {
        // Doing something naughty in strict mode here to trigger a specific error
        // that can be explicitely ignored in debugger's exception settings.
        // If we'd just throw new Error() here, IE's debugger's exception settings
        // will just consider it as "exception thrown by javascript code" which is
        // something you wouldn't want it to ignore.
        getErrorWithStack.arguments;
        throw new Error(); // Fallback if above line don't throw.
    } catch(e) {
        return e;
    }
    return new Error();
}

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