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perf: lazily load some modules in sandbox mode (#23856)

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Samuel Attard 2020-06-02 02:32:32 -07:00 • committed by GitHub
parent 95037a7d2a
commit c6f4573a13
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1 changed files with 12 additions and 4 deletions
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16
lib/sandboxed_renderer/init.ts
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@ -43,13 +43,16 @@ process.isRemoteModuleEnabled = isRemoteModuleEnabled;
// The electron module depends on process.electronBinding // The electron module depends on process.electronBinding
const electron = require('electron'); const electron = require('electron');
const loadedModules = new Map([ const loadedModules = new Map<string, any>([
['electron', electron], ['electron', electron],
['electron/common', electron], ['electron/common', electron],
['electron/renderer', electron], ['electron/renderer', electron],
['events', events], ['events', events]
['timers', require('timers')], ]);
['url', require('url')]
const loadableModules = new Map<string, Function>([
['timers', () => require('timers')],
['url', () => require('url')]
]); ]);
// ElectronApiServiceImpl will look for the "ipcNative" hidden object when // ElectronApiServiceImpl will look for the "ipcNative" hidden object when
@ -109,6 +112,11 @@ function preloadRequire (module: string) {
if (loadedModules.has(module)) { if (loadedModules.has(module)) {
return loadedModules.get(module); return loadedModules.get(module);
} }
if (loadableModules.has(module)) {
const loadedModule = loadableModules.get(module)!();
loadedModules.set(module, loadedModule);
return loadedModule;
}
throw new Error(`module not found: ${module}`); throw new Error(`module not found: ${module}`);
} }