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/**
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/
*/
export function ModuleLoader(base, depth, proto) {
const modules = {};
const principal = Cc["@mozilla.org/systemprincipal;1"].createInstance(
Ci.nsIPrincipal
);
const sharedGlobalsandbox = Cu.Sandbox(principal, {
invisibleToDebugger: true,
sandboxName: "FS Module Loader",
sandboxPrototype: proto,
wantComponents: false,
wantGlobalProperties: [],
wantXrays: false,
});
const require = async function (id) {
if (modules[id]) {
return modules[id].exported_symbols;
}
const url = new URL(depth + id, base);
const module = Object.create(null, {
exported_symbols: {
configurable: false,
enumerable: true,
value: Object.create(null),
writable: true,
},
});
modules[id] = module;
const properties = {
require_module: require,
exported_symbols: module.exported_symbols,
};
// Create a new object in this sandbox, that will be used as the scope
// object for this particular module.
const sandbox = sharedGlobalsandbox.Object();
Object.assign(sandbox, properties);
Services.scriptloader.loadSubScript(url.href, sandbox);
return module.exported_symbols;
};
const returnObj = {
require: {
enumerable: true,
value: require,
},
};
return Object.create(null, returnObj);
}
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