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perf(compiler): don’t write compile output to file system but rely on…
… jest cache (#1561)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,42 +1,10 @@ | ||
| /** | ||
| * This code is heavily inspired from | ||
| * https://github.com/JsCommunity/make-error/blob/v1.3.4/index.js | ||
| * ...but more modified than expected :-D | ||
| * Below is the original license anyway: | ||
| * | ||
| * --- | ||
| * | ||
| * The MIT License (MIT) | ||
| * | ||
| * Copyright (c) 2014 Blake Embrey ([email protected]) | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| import { Logger } from 'bs-logger' | ||
| import { readFileSync, writeFileSync } from 'fs' | ||
| import { readFileSync } from 'fs' | ||
| import mkdirp = require('mkdirp') | ||
| import { basename, extname, join } from 'path' | ||
| import { basename, extname } from 'path' | ||
|
|
||
| import { ConfigSet } from '../config/config-set' | ||
| import { CompileFn, CompilerInstance, MemoryCache, TSFile, TsCompiler } from '../types' | ||
| import { sha1 } from '../util/sha1' | ||
| import { CompileFn, CompilerInstance, MemoryCache, TsCompiler } from '../types' | ||
|
|
||
| import { getResolvedModulesCache } from './compiler-utils' | ||
| import { initializeLanguageServiceInstance } from './language-service' | ||
|
|
@@ -72,74 +40,27 @@ const updateSourceMap = (sourceMapText: string, normalizedFileName: string): str | |
| return JSON.stringify(sourceMap) | ||
| } | ||
|
|
||
| /** | ||
| * Get the file name for the cache entry. | ||
| */ | ||
| const getCacheName = (sourceCode: string, normalizedFileName: string): string => { | ||
| return sha1(normalizedFileName, '\x00', sourceCode) | ||
| } | ||
|
|
||
| /** | ||
| * Ensure the given cached content is valid by sniffing for a base64 encoded '}' | ||
| * at the end of the content, which should exist if there is a valid sourceMap present. | ||
| */ | ||
| const isValidCacheContent = (contents: string): boolean => { | ||
| return /(?:9|0=|Q==)$/.test(contents.slice(-3)) | ||
| } | ||
|
|
||
| /** | ||
| * Compile files which are provided by jest via transform config and cache the result in file system if users run with | ||
| * cache mode | ||
| */ | ||
| const compileAndCacheResult = ( | ||
| cacheDir: string | undefined, | ||
| memoryCache: MemoryCache, | ||
| compileFn: CompileFn, | ||
| getExtension: (fileName: string) => string, | ||
| logger: Logger, | ||
| ) => { | ||
| return (code: string, fileName: string, lineOffset?: number) => { | ||
| function getCompileOutput(): string { | ||
| const [value, sourceMap] = compileFn(code, fileName, lineOffset) | ||
| const output = updateOutput(value, fileName, sourceMap, getExtension) | ||
| memoryCache.files.set(fileName, { | ||
| ...memoryCache.files.get(fileName)!, | ||
| output, | ||
| }) | ||
| logger.debug({ fileName }, 'compileAndCacheResult(): get compile output') | ||
|
|
||
| return output | ||
| const [value, sourceMap] = compileFn(code, fileName, lineOffset) | ||
| const output = updateOutput(value, fileName, sourceMap, getExtension) | ||
| memoryCache.files[fileName] = { | ||
| ...memoryCache.files[fileName], | ||
| output, | ||
| } | ||
| if (!cacheDir) { | ||
| logger.debug({ fileName }, 'compileAndCacheResult(): no cache') | ||
|
|
||
| return getCompileOutput() | ||
| } else { | ||
| const cachePath = join(cacheDir, getCacheName(code, fileName)) | ||
| const extension = getExtension(fileName) | ||
| const outputPath = `${cachePath}${extension}` | ||
| try { | ||
| const output = readFileSync(outputPath, 'utf8') | ||
| if (isValidCacheContent(output)) { | ||
| logger.debug({ fileName }, 'compileAndCacheResult(): cache hit') | ||
| memoryCache.files.set(fileName, { | ||
| ...memoryCache.files.get(fileName)!, | ||
| output, | ||
| }) | ||
|
|
||
| return output | ||
| } | ||
| } catch (err) {} | ||
|
|
||
| logger.debug({ fileName }, 'compileAndCacheResult(): cache miss') | ||
|
|
||
| const output = getCompileOutput() | ||
|
|
||
| logger.debug({ fileName, outputPath }, 'compileAndCacheResult(): writing caches') | ||
|
|
||
| writeFileSync(outputPath, output) | ||
|
|
||
| return output | ||
| } | ||
| return output | ||
| } | ||
| } | ||
|
|
||
|
|
@@ -157,8 +78,8 @@ export const createCompilerInstance = (configs: ConfigSet): TsCompiler => { | |
| const ts = configs.compilerModule // Require the TypeScript compiler and configuration. | ||
| const extensions = ['.ts', '.tsx'] | ||
| const memoryCache: MemoryCache = { | ||
| files: Object.create(null), | ||
| resolvedModules: Object.create(null), | ||
| files: new Map<string, TSFile>(), | ||
| } | ||
| // Enable `allowJs` when flag is set. | ||
| if (compilerOptions.allowJs) { | ||
|
|
@@ -169,16 +90,16 @@ export const createCompilerInstance = (configs: ConfigSet): TsCompiler => { | |
| // Make sure the cache directory exists before continuing. | ||
| mkdirp.sync(cacheDir) | ||
| try { | ||
| const resolvedModulesCache = readFileSync(getResolvedModulesCache(cacheDir), 'utf-8') | ||
| const fsMemoryCache = readFileSync(getResolvedModulesCache(cacheDir), 'utf-8') | ||
| /* istanbul ignore next (covered by e2e) */ | ||
| memoryCache.resolvedModules = JSON.parse(resolvedModulesCache) | ||
| memoryCache.resolvedModules = JSON.parse(fsMemoryCache) | ||
| } catch (e) {} | ||
| } | ||
| /* istanbul ignore next (we leave this for e2e) */ | ||
| configs.jest.setupFiles.concat(configs.jest.setupFilesAfterEnv).forEach(setupFile => { | ||
| memoryCache.files.set(setupFile, { | ||
| memoryCache.files[setupFile] = { | ||
| version: 0, | ||
| }) | ||
| } | ||
| }) | ||
| /** | ||
| * Get the extension for a transpiled file. | ||
|
|
@@ -194,7 +115,7 @@ export const createCompilerInstance = (configs: ConfigSet): TsCompiler => { | |
| } else { | ||
| compilerInstance = initializeTranspilerInstance(configs, memoryCache, logger) | ||
| } | ||
| const compile = compileAndCacheResult(cacheDir, memoryCache, compilerInstance.compileFn, getExtension, logger) | ||
| const compile = compileAndCacheResult(memoryCache, compilerInstance.compileFn, getExtension, logger) | ||
|
|
||
| return { cwd: configs.cwd, compile, program: compilerInstance.program } | ||
| } | ||
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