72154b64ed
Add a gyp target that creates a browserify bundle starting with `lib/sandboxed_renderer/init.js`, which is embedded into the executable using the `atom_js2c` target. The goal of this bundle is to provide a very basic environment for preload scripts where a `require` function is available.
56 lines
1.6 KiB
JavaScript
56 lines
1.6 KiB
JavaScript
/* eslint no-eval: "off" */
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/* global binding, preloadPath, process, Buffer */
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const events = require('events')
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const ipcRenderer = new events.EventEmitter()
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const proc = new events.EventEmitter()
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// eval in window scope:
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// http://www.ecma-international.org/ecma-262/5.1/#sec-10.4.2
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const geval = eval
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require('../renderer/api/ipc-renderer-setup')(ipcRenderer, binding)
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binding.onMessage = function (channel, args) {
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ipcRenderer.emit.apply(ipcRenderer, [channel].concat(args))
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}
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binding.onExit = function () {
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proc.emit('exit')
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}
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const preloadModules = new Map([
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['electron', {
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ipcRenderer: ipcRenderer
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}]
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])
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function preloadRequire (module) {
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if (preloadModules.has(module)) {
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return preloadModules.get(module)
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}
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throw new Error('module not found')
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}
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// Fetch the source for the preload
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let preloadSrc = ipcRenderer.sendSync('ELECTRON_BROWSER_READ_FILE', preloadPath)
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if (preloadSrc.err) {
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throw new Error(preloadSrc.err)
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}
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// Wrap the source into a function receives a `require` function as argument.
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// Browserify bundles can make use of this, as explained in:
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// https://github.com/substack/node-browserify#multiple-bundles
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//
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// For example, the user can create a browserify bundle with:
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//
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// $ browserify -x electron preload.js > renderer.js
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//
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// and any `require('electron')` calls in `preload.js` will work as expected
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// since browserify won't try to include `electron` in the bundle and will fall
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// back to the `preloadRequire` function above.
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let preloadWrapperSrc = `(function(require, process, Buffer, global) {
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${preloadSrc.data}
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})`
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let preloadFn = geval(preloadWrapperSrc)
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preloadFn(preloadRequire, proc, Buffer, global)
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