Firefox addon 在Firefox扩展中导入Javascript模块

我正在开发一个简单的Firefox扩展，但在导入自定义Javascript模块文件时遇到了问题。

bootstrap.js

文件位于根目录下，

test.jsm

位于

content

文件夹内。

test.jsm

将两个符号

foo

和

bar

导出为：

this.EXPORTED_SYMBOLS = ["foo", "bar"];

 Components.utils.import("chrome://myaddon/content/test.jsm");

根据这篇文章，我在

chrome.manifest

文件中已经有了

content

说明：

content     myaddon   content/

因此，我应该能够将

test.jsm

导入

bootstrap.js

中，如下所示：

this.EXPORTED_SYMBOLS = ["foo", "bar"];

 Components.utils.import("chrome://myaddon/content/test.jsm");

但我在浏览器控制台中看到以下两个警告：

addons.xpi
WARN
Error loading bootstrap.js for myaddon@oyenamit: [Exception... "Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [nsIXPCComponents_Utils.import]"
nsresult: "0x80520012 (NS_ERROR_FILE_NOT_FOUND)"
location: "JS frame :: resource://gre/modules/addons/XPIProvider.jsm ->
jar:file:///Users/oyenamit/Library/Application%20Support/Firefox/Profiles/profilename/extensions/myaddon@oyenamit.xpi!/bootstrap.js :: <TOP_LEVEL> :: line 1"
data: no] Stack trace: resource://gre/modules/addons/XPIProvider.jsm ->
jar:file:///Users/oyenamit/Library/Application%20Support/Firefox/Profiles/profilename/extensions/myaddon@oyenamit.xpi!/bootstrap.js:1
< resource://gre/modules/addons/XPIProvider.jsm:4348
< XPI_loadBootstrapScope()@resource://gre/modules/addons/XPIProvider.jsm:4348
< XPI_callBootstrapMethod()@resource://gre/modules/addons/XPIProvider.jsm:4423
< AI_startInstall/<()@resource://gre/modules/addons/XPIProvider.jsm:5849
< next()@self-hosted:675 < TaskImpl_run()@resource://gre/modules/Task.jsm:330
< Handler.prototype.process()@resource://gre/modules/Promise.jsm ->
resource://gre/modules/Promise-backend.js:867 <
this.PromiseWalker.walkerLoop()@resource://gre/modules/Promise.jsm ->
resource://gre/modules/Promise-backend.js:746 <
this.PromiseWalker.scheduleWalkerLoop/<()@resource://gre/modules/Promise.jsm ->
resource://gre/modules/Promise-backend.js:688 < <file:unknown>




addons.xpi
WARN
Exception running bootstrap method startup on myaddon@oyenamit: ReferenceError: foo is not defined (resource://gre/modules/addons/XPIProvider.jsm ->
jar:file:///Users/oyenamit/Library/Application%20Support/Firefox/Profiles/profilename/extensions/myaddon@oyenamit.xpi!/bootstrap.js:16:4) JS Stack trace:
startup@resource://gre/modules/addons/XPIProvider.jsm ->
jar:file:///Users/oyenamit/Library/Application%20Support/Firefox/Profiles/profilename/extensions/myaddon@bootstrap.js:16:5 <
XPI_callBootstrapMethod@XPIProvider.jsm:4451:9 <
AI_startInstall/<@XPIProvider.jsm:5864:13

addons.xpi
警告
加载的bootstrap.js时出错myaddon@oyenamit：[Exception…”组件返回失败代码：0x80520012（NS\u错误\u未找到文件）[nsExpccomponents\u Utils.import]“
nsresult:“0x80520012（未找到NS错误文件）”
位置：“JS帧：：resource://gre/modules/addons/XPIProvider.jsm ->
罐子：file:///Users/oyenamit/Library/Application%20Support/Firefox/Profiles/profilename/extensions/myaddon@oyenamit.xpi！/bootstrap.js:：：第1行“
数据：无]堆栈跟踪：resource://gre/modules/addons/XPIProvider.jsm ->
罐子：file:///Users/oyenamit/Library/Application%20Support/Firefox/Profiles/profilename/extensions/myaddon@oyenamit.xpi/js:1
< resource://gre/modules/addons/XPIProvider.jsm:4348

resource://gre/modules/Promise-backend.js:746 <
this.PromiseWalker.scheduleWalkerLoop/
resource://gre/modules/Promise-backend.js:688 < 
addons.xpi
警告
启动时运行引导方法时出现异常myaddon@oyenamit：ReferenceError:未定义foo(resource://gre/modules/addons/XPIProvider.jsm ->
罐子：file:///Users/oyenamit/Library/Application%20Support/Firefox/Profiles/profilename/extensions/myaddon@oyenamit.xpi！/bootstrap.js:16:4）js堆栈跟踪：
startup@resource：//gre/modules/addons/XPIProvider.jsm->
罐子：file:///Users/oyenamit/Library/Application%20Support/Firefox/Profiles/profilename/extensions/myaddon@bootstrap.js:16:5<
XPI_callBootstrapMethod@XPIProvider.jsm:4451:9 <
AI_startInstall/自定义JSM模块需要在bootstrap.js文件的
startup
函数中导入，我不知道为什么会这样，但它就是这样工作的。如果在文件顶部导入它，它将不起作用

请确保在关机时卸载，这是一个非常简单的演示和指南，介绍如何执行此操作：

我发现从
bootstrap.js
调用JSM模块的一个结果是，JSM不能直接访问
ADDON\u ENABLE
之类的常量。我们需要从
bootstrap.js
中传递它们。这是真的@Oyenamit注意，此方法不适用于较新的WebExtensions格式。