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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
import { NetUtil } from "resource://gre/modules/NetUtil.sys.mjs";
* A function that can be used as part of a require hook for a
* loader.js Loader.
* This function handles "raw!" and "theme-loader!" requires.
export const requireRawId = function (id, require) {
const index = id.indexOf("!");
const rawId = id.slice(index + 1);
let uri = require.resolve(rawId);
// If the original string did not end with ".js", then
// require.resolve might have added the suffix. We don't want to
// add a suffix for a raw load (if needed the caller can specify it
// manually), so remove it here.
if (!id.endsWith(".js") && uri.endsWith(".js")) {
uri = uri.slice(0, -3);
const stream = NetUtil.newChannel({
uri: NetUtil.newURI(uri, "UTF-8"),
loadUsingSystemPrincipal: true,
const count = stream.available();
const data = NetUtil.readInputStreamToString(stream, count, {
charset: "UTF-8",
// For the time being it doesn't seem worthwhile to cache the
// result here.
return data;