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Generate preload cache from live app

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Fedor Indutny 2024-09-08 16:26:12 -07:00 • committed by GitHub
parent 695f64a55a
commit 3dba3a07f0
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7 changed files with 57 additions and 69 deletions
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13
preload.wrapper.ts
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@ -5,9 +5,10 @@
// https://github.com/zertosh/v8-compile-cache/blob/b6bc035d337fbda0e6e3ec7936499048fc9deafc/v8-compile-cache.js
import { Module } from 'node:module';
import { readFileSync } from 'node:fs';
import { readFileSync, writeFileSync } from 'node:fs';
import { join, dirname } from 'node:path';
import { Script } from 'node:vm';
import { ipcRenderer } from 'electron';
const srcPath = join(__dirname, 'preload.bundle.js');
const cachePath = join(__dirname, 'preload.bundle.cache');
@ -22,6 +23,8 @@ try {
}
}
let script: Script | undefined;
function compile(
filename: string,
content: string
@ -31,7 +34,7 @@ function compile(
// create wrapper function
const wrapper = Module.wrap(content);
const script = new Script(wrapper, {
script = new Script(wrapper, {
filename,
lineOffset: 0,
cachedData,
@ -124,3 +127,9 @@ ModuleInternals.prototype._compile = function _compile(
// eslint-disable-next-line import/no-dynamic-require
require(srcPath);
// See `ts/scripts/generate-preload-cache.ts`
if (script && process.env.GENERATE_PRELOAD_CACHE) {
writeFileSync(cachePath, script.createCachedData());
ipcRenderer.send('shutdown');
}