Inject inpage script synchronously

Huge thanks to the Firefox team, for their help on the issue of our long-standing inpage script race condition.

http://stackoverflow.com/questions/38577656/how-can-i-make-a-firefox-add-on-contentscript-inject-and-run-a-script-before-oth

The problem is that we were injecting a `script` tag and assigning its `src` attribute, which triggers an asynchronous fetch request, and does not guarantee execution order! (That was news to me!)

Instead, I'm now assigning the `script` tag a `textContent` value of the script to inject, and it seems to fix the problem!

There is also a Firefox-only API that could solve this whole problem in an even more elegant way, so we might want to expose a code path for that solution later on:

https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Language_Bindings/Components.utils.exportFunction

Allows you to expose an object from one scope to another. There was even talk of creating a polyfill for it that does virtually what we do, message passing between contexts.

1 files changed, 2 insertions, 0 deletions

diff --git a/gulpfile.js b/gulpfile.js
index 941155ff4..e10a4eb7d 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -8,6 +8,7 @@ var watch = require('gulp-watch')
 var sourcemaps = require('gulp-sourcemaps')
 var assign = require('lodash.assign')
 var livereload = require('gulp-livereload')
+var brfs = require('gulp-brfs')
 var del = require('del')
 var eslint = require('gulp-eslint')
 var fs = require('fs')
@@ -144,6 +145,7 @@ function bundleTask(opts) {
       // log errors if they happen
       .on('error', gutil.log.bind(gutil, 'Browserify Error'))
       .pipe(source(opts.filename))
+      .pipe(brfs())
       // optional, remove if you don't need to buffer file contents
       .pipe(buffer())
       // optional, remove if you dont want sourcemaps