在 Firefox 扩展中导入 Javascript 模块

Question

我正在开发一个简单的 Firefox 扩展，但在导入自定义 Javascript 模块文件时遇到问题。 bootstrap.js 文件位于根目录，test.jsm 位于 content 文件夹中。 test.jsm 将 2 个符号 foo 和 bar 导出为：

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

根据 Using JavaScript code modules 文章，我在 chrome.manifest 文件中已经有一个 content 指令：

content     myaddon   content/

所以，我应该能够将 test.jsm 导入 bootstrap.js 为：

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

但我在浏览器控制台中看到以下 2 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

我做错了什么？我正在使用 Firefox 39.0.

示例 XPI 文件可以从 here 下载。

Answer 1

需要在 bootstrap.js 文件的 startup 函数中导入自定义 JSM 模块，我不知道这是为什么，但它就是这样工作的。如果将其导入到文件顶部，它将不起作用。

确保在关机时卸载它，这是一个非常简单的演示和操作指南：

https://gist.github.com/Noitidart/9045387#file-bootstrap-js-L6

在 Firefox 扩展中导入 Javascript 模块

Importing Javascript module in Firefox extension

javascript

firefox-addon

firefox-addon-bootstrap