initial commit & day 1 complete
Change-Id: Ic39e13e7e7fc0043ee1630df7deef7cc59d8b6b1
diff --git a/node_modules/v8-compile-cache-lib/CHANGELOG.md b/node_modules/v8-compile-cache-lib/CHANGELOG.md
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@@ -0,0 +1,53 @@
+# `v8-module-cache` Changelog
+
+## 2021-03-05, Version 2.3.0
+
+* Fix use require.main instead of module.parent [#34](https://github.com/zertosh/v8-compile-cache/pull/34).
+
+## 2020-10-28, Version 2.2.0
+
+* Added `V8_COMPILE_CACHE_CACHE_DIR` option [#23](https://github.com/zertosh/v8-compile-cache/pull/23).
+
+## 2020-05-30, Version 2.1.1
+
+* Stop using process.umask() [#28](https://github.com/zertosh/v8-compile-cache/pull/28).
+
+## 2019-08-04, Version 2.1.0
+
+* Fix Electron by calling the module wrapper with `Buffer` [#10](https://github.com/zertosh/v8-compile-cache/pull/10).
+
+## 2019-05-10, Version 2.0.3
+
+* Add `LICENSE` file [#19](https://github.com/zertosh/v8-compile-cache/pull/19).
+* Add "repository" to `package.json` (see [eea336e](https://github.com/zertosh/v8-compile-cache/commit/eea336eaa8360f9ded9342b8aa928e56ac6a7529)).
+* Support `require.resolve.paths` (added in Node v8.9.0) [#20](https://github.com/zertosh/v8-compile-cache/pull/20)/[#22](https://github.com/zertosh/v8-compile-cache/pull/22).
+
+## 2018-08-06, Version 2.0.2
+
+* Re-publish.
+
+## 2018-08-06, Version 2.0.1
+
+* Support `require.resolve` options (added in Node v8.9.0).
+
+## 2018-04-30, Version 2.0.0
+
+* Use `Buffer.alloc` instead of `new Buffer()`.
+* Drop support for Node 5.x.
+
+## 2018-01-23, Version 1.1.2
+
+* Instead of checking for `process.versions.v8`, check that `script.cachedDataProduced` is `true` (rather than `null`/`undefined`) for support to be considered existent.
+
+## 2018-01-23, Version 1.1.1
+
+* Check for the existence of `process.versions.v8` before attaching hook (see [f8b0388](https://github.com/zertosh/v8-compile-cache/commit/f8b038848be94bc2c905880dd50447c73393f364)).
+
+## 2017-03-27, Version 1.1.0
+
+* Safer cache directory creation (see [bcb3b12](https://github.com/zertosh/v8-compile-cache/commit/bcb3b12c819ab0927ec4408e70f612a6d50a9617)).
+ - The cache is now suffixed with the user's uid on POSIX systems (i.e. `/path/to/tmp/v8-compile-cache-1234`).
+
+## 2017-02-21, Version 1.0.0
+
+* Initial release.
diff --git a/node_modules/v8-compile-cache-lib/LICENSE b/node_modules/v8-compile-cache-lib/LICENSE
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--- /dev/null
+++ b/node_modules/v8-compile-cache-lib/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2019 Andres Suarez
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/node_modules/v8-compile-cache-lib/README.md b/node_modules/v8-compile-cache-lib/README.md
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index 0000000..0593feb
--- /dev/null
+++ b/node_modules/v8-compile-cache-lib/README.md
@@ -0,0 +1,60 @@
+# v8-compile-cache-lib
+
+> Fork of [`v8-compile-cache`](https://www.npmjs.com/package/v8-compile-cache) exposed as an API for programmatic usage in other libraries and tools.
+
+---
+
+[](https://github.com/cspotcode/v8-compile-cache-lib/actions?query=workflow%3A%22Continuous+Integration%22)
+
+`v8-compile-cache-lib` attaches a `require` hook to use [V8's code cache](https://v8project.blogspot.com/2015/07/code-caching.html) to speed up instantiation time. The "code cache" is the work of parsing and compiling done by V8.
+
+The ability to tap into V8 to produce/consume this cache was introduced in [Node v5.7.0](https://nodejs.org/en/blog/release/v5.7.0/).
+
+## Usage
+
+1. Add the dependency:
+
+ ```sh
+ $ npm install --save v8-compile-cache-lib
+ ```
+
+2. Then, in your entry module add:
+
+ ```js
+ require('v8-compile-cache-lib').install();
+ ```
+
+**`.install()` in Node <5.7.0 is a noop – but you need at least Node 4.0.0 to support the ES2015 syntax used by `v8-compile-cache-lib`.**
+
+## Options
+
+Set the environment variable `DISABLE_V8_COMPILE_CACHE=1` to disable the cache.
+
+Cache directory is defined by environment variable `V8_COMPILE_CACHE_CACHE_DIR` or defaults to `<os.tmpdir()>/v8-compile-cache-<V8_VERSION>`.
+
+## Internals
+
+Cache files are suffixed `.BLOB` and `.MAP` corresponding to the entry module that required `v8-compile-cache-lib`. The cache is _entry module specific_ because it is faster to load the entire code cache into memory at once, than it is to read it from disk on a file-by-file basis.
+
+## Benchmarks
+
+See https://github.com/cspotcode/v8-compile-cache-lib/tree/master/bench.
+
+**Load Times:**
+
+| Module | Without Cache | With Cache |
+| ---------------- | -------------:| ----------:|
+| `babel-core` | `218ms` | `185ms` |
+| `yarn` | `153ms` | `113ms` |
+| `yarn` (bundled) | `228ms` | `105ms` |
+
+_^ Includes the overhead of loading the cache itself._
+
+## Acknowledgements
+
+* The original [`v8-compile-cache`](https://github.com/zertosh/v8-compile-cache) from which this library is forked.
+* `FileSystemBlobStore` and `NativeCompileCache` are based on Atom's implementation of their v8 compile cache:
+ - https://github.com/atom/atom/blob/b0d7a8a/src/file-system-blob-store.js
+ - https://github.com/atom/atom/blob/b0d7a8a/src/native-compile-cache.js
+* `mkdirpSync` is based on:
+ - https://github.com/substack/node-mkdirp/blob/f2003bb/index.js#L55-L98
diff --git a/node_modules/v8-compile-cache-lib/package.json b/node_modules/v8-compile-cache-lib/package.json
new file mode 100644
index 0000000..e905b10
--- /dev/null
+++ b/node_modules/v8-compile-cache-lib/package.json
@@ -0,0 +1,35 @@
+{
+ "name": "v8-compile-cache-lib",
+ "version": "3.0.1",
+ "description": "Require hook for automatic V8 compile cache persistence",
+ "main": "v8-compile-cache.js",
+ "scripts": {
+ "bench": "bench/run.sh",
+ "eslint": "eslint --max-warnings=0 .",
+ "tap": "tap test/*-test.js",
+ "test": "npm run tap",
+ "posttest": "npm run eslint"
+ },
+ "author": "Andrew Bradley <cspotcode@gmail.com>",
+ "repository": {
+ "type": "git",
+ "url": "https://github.com/cspotcode/v8-compile-cache-lib.git"
+ },
+ "files": [
+ "v8-compile-cache.d.ts",
+ "v8-compile-cache.js"
+ ],
+ "license": "MIT",
+ "dependencies": {},
+ "devDependencies": {
+ "babel-core": "6.26.3",
+ "eslint": "^7.12.1",
+ "flow-parser": "0.136.0",
+ "rimraf": "^2.5.4",
+ "rxjs": "6.6.3",
+ "semver": "^5.3.0",
+ "tap": "^9.0.0",
+ "temp": "^0.8.3",
+ "yarn": "1.22.10"
+ }
+}
diff --git a/node_modules/v8-compile-cache-lib/v8-compile-cache.d.ts b/node_modules/v8-compile-cache-lib/v8-compile-cache.d.ts
new file mode 100644
index 0000000..fb80c2c
--- /dev/null
+++ b/node_modules/v8-compile-cache-lib/v8-compile-cache.d.ts
@@ -0,0 +1,7 @@
+export function install(opts?: {
+ cacheDir?: string;
+ prefix?: string;
+}): {
+ uninstall(): void;
+} | undefined;
+x
\ No newline at end of file
diff --git a/node_modules/v8-compile-cache-lib/v8-compile-cache.js b/node_modules/v8-compile-cache-lib/v8-compile-cache.js
new file mode 100644
index 0000000..baedb36
--- /dev/null
+++ b/node_modules/v8-compile-cache-lib/v8-compile-cache.js
@@ -0,0 +1,391 @@
+'use strict';
+
+const Module = require('module');
+const crypto = require('crypto');
+const fs = require('fs');
+const path = require('path');
+const vm = require('vm');
+const os = require('os');
+
+const hasOwnProperty = Object.prototype.hasOwnProperty;
+
+//------------------------------------------------------------------------------
+// FileSystemBlobStore
+//------------------------------------------------------------------------------
+
+class FileSystemBlobStore {
+ constructor(directory, prefix) {
+ const name = prefix ? slashEscape(prefix + '.') : '';
+ this._blobFilename = path.join(directory, name + 'BLOB');
+ this._mapFilename = path.join(directory, name + 'MAP');
+ this._lockFilename = path.join(directory, name + 'LOCK');
+ this._directory = directory;
+ this._load();
+ }
+
+ has(key, invalidationKey) {
+ if (hasOwnProperty.call(this._memoryBlobs, key)) {
+ return this._invalidationKeys[key] === invalidationKey;
+ } else if (hasOwnProperty.call(this._storedMap, key)) {
+ return this._storedMap[key][0] === invalidationKey;
+ }
+ return false;
+ }
+
+ get(key, invalidationKey) {
+ if (hasOwnProperty.call(this._memoryBlobs, key)) {
+ if (this._invalidationKeys[key] === invalidationKey) {
+ return this._memoryBlobs[key];
+ }
+ } else if (hasOwnProperty.call(this._storedMap, key)) {
+ const mapping = this._storedMap[key];
+ if (mapping[0] === invalidationKey) {
+ return this._storedBlob.slice(mapping[1], mapping[2]);
+ }
+ }
+ }
+
+ set(key, invalidationKey, buffer) {
+ this._invalidationKeys[key] = invalidationKey;
+ this._memoryBlobs[key] = buffer;
+ this._dirty = true;
+ }
+
+ delete(key) {
+ if (hasOwnProperty.call(this._memoryBlobs, key)) {
+ this._dirty = true;
+ delete this._memoryBlobs[key];
+ }
+ if (hasOwnProperty.call(this._invalidationKeys, key)) {
+ this._dirty = true;
+ delete this._invalidationKeys[key];
+ }
+ if (hasOwnProperty.call(this._storedMap, key)) {
+ this._dirty = true;
+ delete this._storedMap[key];
+ }
+ }
+
+ isDirty() {
+ return this._dirty;
+ }
+
+ save() {
+ const dump = this._getDump();
+ const blobToStore = Buffer.concat(dump[0]);
+ const mapToStore = JSON.stringify(dump[1]);
+
+ try {
+ mkdirpSync(this._directory);
+ fs.writeFileSync(this._lockFilename, 'LOCK', {flag: 'wx'});
+ } catch (error) {
+ // Swallow the exception if we fail to acquire the lock.
+ return false;
+ }
+
+ try {
+ fs.writeFileSync(this._blobFilename, blobToStore);
+ fs.writeFileSync(this._mapFilename, mapToStore);
+ } finally {
+ fs.unlinkSync(this._lockFilename);
+ }
+
+ return true;
+ }
+
+ _load() {
+ try {
+ this._storedBlob = fs.readFileSync(this._blobFilename);
+ this._storedMap = JSON.parse(fs.readFileSync(this._mapFilename));
+ } catch (e) {
+ this._storedBlob = Buffer.alloc(0);
+ this._storedMap = {};
+ }
+ this._dirty = false;
+ this._memoryBlobs = {};
+ this._invalidationKeys = {};
+ }
+
+ _getDump() {
+ const buffers = [];
+ const newMap = {};
+ let offset = 0;
+
+ function push(key, invalidationKey, buffer) {
+ buffers.push(buffer);
+ newMap[key] = [invalidationKey, offset, offset + buffer.length];
+ offset += buffer.length;
+ }
+
+ for (const key of Object.keys(this._memoryBlobs)) {
+ const buffer = this._memoryBlobs[key];
+ const invalidationKey = this._invalidationKeys[key];
+ push(key, invalidationKey, buffer);
+ }
+
+ for (const key of Object.keys(this._storedMap)) {
+ if (hasOwnProperty.call(newMap, key)) continue;
+ const mapping = this._storedMap[key];
+ const buffer = this._storedBlob.slice(mapping[1], mapping[2]);
+ push(key, mapping[0], buffer);
+ }
+
+ return [buffers, newMap];
+ }
+}
+
+//------------------------------------------------------------------------------
+// NativeCompileCache
+//------------------------------------------------------------------------------
+
+class NativeCompileCache {
+ constructor() {
+ this._cacheStore = null;
+ this._previousModuleCompile = null;
+ }
+
+ setCacheStore(cacheStore) {
+ this._cacheStore = cacheStore;
+ }
+
+ install() {
+ const self = this;
+ const hasRequireResolvePaths = typeof require.resolve.paths === 'function';
+ this._previousModuleCompile = Module.prototype._compile;
+ Module.prototype._compile = this._ownModuleCompile = _ownModuleCompile;
+ self.enabled = true;
+ function _ownModuleCompile(content, filename) {
+ if(!self.enabled) return this._previousModuleCompile.apply(this, arguments);
+ const mod = this;
+
+ function require(id) {
+ return mod.require(id);
+ }
+
+ // https://github.com/nodejs/node/blob/v10.15.3/lib/internal/modules/cjs/helpers.js#L28
+ function resolve(request, options) {
+ return Module._resolveFilename(request, mod, false, options);
+ }
+ require.resolve = resolve;
+
+ // https://github.com/nodejs/node/blob/v10.15.3/lib/internal/modules/cjs/helpers.js#L37
+ // resolve.resolve.paths was added in v8.9.0
+ if (hasRequireResolvePaths) {
+ resolve.paths = function paths(request) {
+ return Module._resolveLookupPaths(request, mod, true);
+ };
+ }
+
+ require.main = process.mainModule;
+
+ // Enable support to add extra extension types
+ require.extensions = Module._extensions;
+ require.cache = Module._cache;
+
+ const dirname = path.dirname(filename);
+
+ const compiledWrapper = self._moduleCompile(filename, content);
+
+ // We skip the debugger setup because by the time we run, node has already
+ // done that itself.
+
+ // `Buffer` is included for Electron.
+ // See https://github.com/zertosh/v8-compile-cache/pull/10#issuecomment-518042543
+ const args = [mod.exports, require, mod, filename, dirname, process, global, Buffer];
+ return compiledWrapper.apply(mod.exports, args);
+ }
+ }
+
+ uninstall() {
+ this.enabled = false;
+ // If something else has since been installed on top of us, we cannot overwrite it.
+ if(Module.prototype._compile === this._ownModuleCompile) {
+ Module.prototype._compile = this._previousModuleCompile;
+ }
+ }
+
+ _moduleCompile(filename, content) {
+ // https://github.com/nodejs/node/blob/v7.5.0/lib/module.js#L511
+
+ // Remove shebang
+ var contLen = content.length;
+ if (contLen >= 2) {
+ if (content.charCodeAt(0) === 35/*#*/ &&
+ content.charCodeAt(1) === 33/*!*/) {
+ if (contLen === 2) {
+ // Exact match
+ content = '';
+ } else {
+ // Find end of shebang line and slice it off
+ var i = 2;
+ for (; i < contLen; ++i) {
+ var code = content.charCodeAt(i);
+ if (code === 10/*\n*/ || code === 13/*\r*/) break;
+ }
+ if (i === contLen) {
+ content = '';
+ } else {
+ // Note that this actually includes the newline character(s) in the
+ // new output. This duplicates the behavior of the regular
+ // expression that was previously used to replace the shebang line
+ content = content.slice(i);
+ }
+ }
+ }
+ }
+
+ // create wrapper function
+ var wrapper = Module.wrap(content);
+
+ var invalidationKey = crypto
+ .createHash('sha1')
+ .update(content, 'utf8')
+ .digest('hex');
+
+ var buffer = this._cacheStore.get(filename, invalidationKey);
+
+ var script = new vm.Script(wrapper, {
+ filename: filename,
+ lineOffset: 0,
+ displayErrors: true,
+ cachedData: buffer,
+ produceCachedData: true,
+ });
+
+ if (script.cachedDataProduced) {
+ this._cacheStore.set(filename, invalidationKey, script.cachedData);
+ } else if (script.cachedDataRejected) {
+ this._cacheStore.delete(filename);
+ }
+
+ var compiledWrapper = script.runInThisContext({
+ filename: filename,
+ lineOffset: 0,
+ columnOffset: 0,
+ displayErrors: true,
+ });
+
+ return compiledWrapper;
+ }
+}
+
+//------------------------------------------------------------------------------
+// utilities
+//
+// https://github.com/substack/node-mkdirp/blob/f2003bb/index.js#L55-L98
+// https://github.com/zertosh/slash-escape/blob/e7ebb99/slash-escape.js
+//------------------------------------------------------------------------------
+
+function mkdirpSync(p_) {
+ _mkdirpSync(path.resolve(p_), 0o777);
+}
+
+function _mkdirpSync(p, mode) {
+ try {
+ fs.mkdirSync(p, mode);
+ } catch (err0) {
+ if (err0.code === 'ENOENT') {
+ _mkdirpSync(path.dirname(p));
+ _mkdirpSync(p);
+ } else {
+ try {
+ const stat = fs.statSync(p);
+ if (!stat.isDirectory()) { throw err0; }
+ } catch (err1) {
+ throw err0;
+ }
+ }
+ }
+}
+
+function slashEscape(str) {
+ const ESCAPE_LOOKUP = {
+ '\\': 'zB',
+ ':': 'zC',
+ '/': 'zS',
+ '\x00': 'z0',
+ 'z': 'zZ',
+ };
+ const ESCAPE_REGEX = /[\\:/\x00z]/g; // eslint-disable-line no-control-regex
+ return str.replace(ESCAPE_REGEX, match => ESCAPE_LOOKUP[match]);
+}
+
+function supportsCachedData() {
+ const script = new vm.Script('""', {produceCachedData: true});
+ // chakracore, as of v1.7.1.0, returns `false`.
+ return script.cachedDataProduced === true;
+}
+
+function getCacheDir() {
+ const v8_compile_cache_cache_dir = process.env.V8_COMPILE_CACHE_CACHE_DIR;
+ if (v8_compile_cache_cache_dir) {
+ return v8_compile_cache_cache_dir;
+ }
+
+ // Avoid cache ownership issues on POSIX systems.
+ const dirname = typeof process.getuid === 'function'
+ ? 'v8-compile-cache-' + process.getuid()
+ : 'v8-compile-cache';
+ const version = typeof process.versions.v8 === 'string'
+ ? process.versions.v8
+ : typeof process.versions.chakracore === 'string'
+ ? 'chakracore-' + process.versions.chakracore
+ : 'node-' + process.version;
+ const cacheDir = path.join(os.tmpdir(), dirname, version);
+ return cacheDir;
+}
+
+function getMainName() {
+ // `require.main.filename` is undefined or null when:
+ // * node -e 'require("v8-compile-cache")'
+ // * node -r 'v8-compile-cache'
+ // * Or, requiring from the REPL.
+ const mainName = require.main && typeof require.main.filename === 'string'
+ ? require.main.filename
+ : process.cwd();
+ return mainName;
+}
+
+function install(opts) {
+ if (!process.env.DISABLE_V8_COMPILE_CACHE && supportsCachedData()) {
+ if(typeof opts === 'undefined') opts = {}
+ let cacheDir = opts.cacheDir
+ if(typeof cacheDir === 'undefined') cacheDir = getCacheDir();
+ let prefix = opts.prefix
+ if(typeof prefix === 'undefined') prefix = getMainName();
+ const blobStore = new FileSystemBlobStore(cacheDir, prefix);
+
+ const nativeCompileCache = new NativeCompileCache();
+ nativeCompileCache.setCacheStore(blobStore);
+ nativeCompileCache.install();
+
+ let uninstalled = false;
+ const uninstall = () => {
+ if(uninstalled) return;
+ uninstalled = true;
+ process.removeListener('exit', uninstall);
+ if (blobStore.isDirty()) {
+ blobStore.save();
+ }
+ nativeCompileCache.uninstall();
+ }
+ process.once('exit', uninstall);
+ return {uninstall};
+ }
+}
+
+//------------------------------------------------------------------------------
+// main
+//------------------------------------------------------------------------------
+
+module.exports.install = install;
+
+module.exports.__TEST__ = {
+ FileSystemBlobStore,
+ NativeCompileCache,
+ mkdirpSync,
+ slashEscape,
+ supportsCachedData,
+ getCacheDir,
+ getMainName,
+};