@@ -50,6 +50,7 @@ tests/simple-long-path/long-src-path
 # is linked to the temp dir of the os
 e2e/__workdir_synlink__
 **/.ts-jest-e2e.json
+.ts-jest-digest
 # while refactoring...
 old/
 

@@ -74,3 +74,6 @@ tslint.json
 docs
 
 commitlint.config.js
+
+# ensure we do not omit the digest
+!.ts-jest-digest

@@ -8,9 +8,10 @@
 "scripts": {
 "prebuild": "node scripts/clean-dist.js",
 "build": "tsc -p tsconfig.build.json",
+"postbuild": "node scripts/post-build.js",
 "build:watch": "tsc -p tsconfig.build.json -w",
 "clean": "node scripts/clean.js",
-"pretest": "run-s typecheck lint",
+"pretest": "npm run lint",
 "test": "run-s -s test:e2e \"test:unit -- {@}\" --",
 "test:prepare": "npm run test:e2e -- --prepareOnly",
 "test:e2e": "node scripts/e2e.js",

@@ -8,7 +8,7 @@ const path = require('path')
 const Paths = require('./lib/paths')
 const { createHash } = require('crypto')
 const logger = require('./lib/logger')
-const { createBundle, packageDigest } = require('./lib/bundle')
+const { createBundle, readPackageDigest } = require('./lib/bundle')
 const npm = require('./lib/npm')
 
 const configFile = path.join(Paths.e2eRootDir, 'jest.config.js')
@@ -49,8 +49,7 @@ function setupE2e() {
 )
 
 // get the hash of the bundle (to know if we should install it again or not)
-// we need to compute it ourselfs as the npm pack creates different tgz even tho content has not changed
-const bundleHash = packageDigest(bundle)
+const bundleHash = readPackageDigest()
 log('ts-jest digest:', bundleHash)
 
 // ensure directory exists before copying over

@@ -1,8 +1,8 @@
 const npm = require('./npm')
 const logger = require('./logger')
-const { rootDir } = require('./paths')
+const { rootDir, pkgDigestFile } = require('./paths')
 const { join, resolve } = require('path')
-const { readFileSync, statSync } = require('fs')
+const { readFileSync, statSync, writeFileSync, existsSync } = require('fs-extra')
 const { createHash } = require('crypto')
 const { sync: globIgnore } = require('glob-gitignore')
 
@@ -19,7 +19,11 @@ function createBundle(log = logger.log.bind(logger)) {
 return join(rootDir, res.stdout.toString().trim())
 }
 
-function packageDigest() {
+function readPackageDigest() {
+return existsSync(pkgDigestFile) ? readFileSync(pkgDigestFile, 'utf8') : undefined
+}
+
+function computePackageDigest(noWriteFile = false) {
 const files = globIgnore(join(rootDir, '**'), {
 ignore: readFileSync(join(rootDir, '.npmignore'))
 .toString('utf8')
@@ -28,14 +32,19 @@ function packageDigest() {
 })
 const hash = createHash('sha1')
 files.sort().forEach(file => {
-if (statSync(file).isDirectory()) return
+if (file === pkgDigestFile || statSync(file).isDirectory()) return
 hash.update(readFileSync(resolve(file)))
 hash.update('\x00')
 })
-return hash.digest('hex')
+const digest = hash.digest('hex')
+if (!noWriteFile) {
+writeFileSync(pkgDigestFile, digest, 'utf8')
+}
+return digest
 }
 
 module.exports = {
 createBundle,
-packageDigest,
+computePackageDigest,
+readPackageDigest,
 }

@@ -1,4 +1,5 @@
 declare const rootDir: string
+declare const pkgDigestFile: string
 declare const e2eSourceDir: string
 declare const e2eRootDir: string
 declare const e2eWorkDir: string
@@ -11,6 +12,7 @@ declare const e2eTestsDir: string
 
 export {
 rootDir,
+pkgDigestFile,
 e2eSourceDir,
 e2eRootDir,
 e2eWorkDir,

@@ -2,6 +2,7 @@ const path = require('path')
 const os = require('os')
 
 const rootDir = path.resolve(__dirname, '..', '..')
+const pkgDigestFile = path.join(rootDir, '.ts-jest-digest')
 const distDir = path.join(rootDir, 'dist')
 const testsRootDir = path.join(rootDir, 'tests')
 const e2eRootDir = path.join(rootDir, 'e2e')
@@ -15,6 +16,7 @@ const e2eWorkTemplatesDir = path.join(e2eWorkDir, '__templates__')
 const e2eWotkDirLink = path.join(e2eRootDir, '__workdir_synlink__')
 
 module.exports = {
+pkgDigestFile,
 rootDir,
 e2eSourceDir,
 e2eRootDir,

@@ -0,0 +1,3 @@
+const { computePackageDigest } = require('./lib/bundle')
+
+computePackageDigest()

@@ -0,0 +1,6 @@
+export const version = '1.2.3-test.0'
+export const digest = 'a0d51ca854194df8191d0e65c0ca4730f510f332'
+export const createTransformer = jest.fn()
+export const jestPreset = { jestPreset: true }
+export const createJestPreset = jest.fn()
+export const pathsToModuleNameMapper = jest.fn()

@@ -2,7 +2,7 @@ import { testing } from 'bs-logger'
 import { resolve } from 'path'
 import ts, { Diagnostic, ModuleKind, ScriptTarget } from 'typescript'
 
-import { version as currentVersion } from '../../package.json'
+import * as _myModule from '..'
 import * as fakers from '../__helpers__/fakers'
 import { logTargetMock, mocked } from '../__helpers__/mocks'
 import { TsJestGlobalOptions } from '../types'
@@ -12,8 +12,10 @@ import { normalizeSlashes } from '../util/normalize-slashes'
 import { ConfigSet, IGNORE_DIAGNOSTIC_CODES, MATCH_NOTHING } from './config-set'
 
 jest.mock('../util/backports')
+jest.mock('../index')
 
 const backports = mocked(_backports)
+const myModule = mocked(_myModule)
 
 backports.backportJestConfig.mockImplementation((_, config) => ({
 ...config,
@@ -385,7 +387,7 @@ describe('versions', () => {
 it('should return correct version map', () => {
 expect(createConfigSet().versions).toEqual({
 jest: pkgVersion('jest'),
-'ts-jest': currentVersion,
+'ts-jest': myModule.version,
 typescript: pkgVersion('typescript'),
 })
 })
@@ -397,13 +399,19 @@ describe('versions', () => {
 'babel-core': pkgVersion('babel-core'),
 'babel-jest': pkgVersion('babel-jest'),
 jest: pkgVersion('jest'),
-'ts-jest': currentVersion,
+'ts-jest': myModule.version,
 typescript: pkgVersion('typescript'),
 })
 })
 })
 }) // versions
 
+describe('tsJestDigest', () => {
+it('should be the package digest', () => {
+expect(createConfigSet().tsJestDigest).toBe(myModule.digest)
+})
+}) // tsJestDigest
+
 describe('tsconfig', () => {
 it('should return input tsconfig', () => {
 const cs = createConfigSet({ tsJestConfig: { tsConfig: { target: 'ES6' } } as any })
@@ -468,8 +476,9 @@ describe('cacheKey', () => {
 const val = cs.jsonValue.value
 delete val.versions
 cs.jsonValue.value = val
+// digest is mocked in src/__mocks__/index.ts
 expect(cs.cacheKey).toMatchInlineSnapshot(
-`"{\\"jest\\":{\\"__backported\\":true,\\"globals\\":{}},\\"transformers\\":[\\"hoisting-jest-mock@1\\"],\\"tsJest\\":{\\"compiler\\":\\"typescript\\",\\"diagnostics\\":{\\"ignoreCodes\\":[6059,18002,18003],\\"pretty\\":true,\\"throws\\":true},\\"isolatedModules\\":false,\\"transformers\\":[]},\\"tsconfig\\":{\\"compilerOptions\\":{}}}"`,
+`"{\\"digest\\":\\"a0d51ca854194df8191d0e65c0ca4730f510f332\\",\\"jest\\":{\\"__backported\\":true,\\"globals\\":{}},\\"transformers\\":[\\"hoisting-jest-mock@1\\"],\\"tsJest\\":{\\"compiler\\":\\"typescript\\",\\"diagnostics\\":{\\"ignoreCodes\\":[6059,18002,18003],\\"pretty\\":true,\\"throws\\":true},\\"isolatedModules\\":false,\\"transformers\\":[]},\\"tsconfig\\":{\\"declaration\\":false,\\"inlineSourceMap\\":false,\\"inlineSources\\":true,\\"module\\":1,\\"noEmit\\":false,\\"outDir\\":\\"$$ts-jest$$\\",\\"removeComments\\":false,\\"sourceMap\\":true,\\"target\\":1}}"`,
 )
 })
 }) // cacheKey
@@ -479,13 +488,15 @@ describe('jsonValue', () => {
 const cs = createConfigSet({ tsJestConfig: { tsConfig: false } as any })
 const val = cs.jsonValue.valueOf()
 expect(cs.toJSON()).toEqual(val)
-// it will change each time we upgrade and we tested those in the `version` block
+// it will change each time we upgrade – we tested those in the `version` block
 expect(val.versions).toEqual(cs.versions)
 delete val.versions
 
+// digest is mocked in src/__mocks__/index.ts
 expect(val).toMatchInlineSnapshot(`
 Object {
 "babel": undefined,
+"digest": "a0d51ca854194df8191d0e65c0ca4730f510f332",
 "jest": Object {
 "__backported": true,
 "globals": Object {},
@@ -511,7 +522,16 @@ Object {
 "tsConfig": undefined,
 },
 "tsconfig": Object {
-"compilerOptions": Object {},
+"configFilePath": undefined,
+"declaration": false,
+"inlineSourceMap": false,
+"inlineSources": true,
+"module": 1,
+"noEmit": false,
+"outDir": "$$ts-jest$$",
+"removeComments": false,
+"sourceMap": true,
+"target": 1,
 },
 }
 `)

@@ -23,7 +23,7 @@ import {
 SourceFile,
 } from 'typescript'
 
-import { version as myVersion } from '..'
+import { digest as MY_DIGEST, version as MY_VERSION } from '..'
 import { createCompiler } from '../compiler'
 import { internals as internalAstTransformers } from '../transformers'
 import {
@@ -229,7 +229,7 @@ export class ConfigSet {
 map[name] = getPackageVersion(name) || '-'
 return map
 },
-{ 'ts-jest': myVersion } as Record<string, string>,
+{ 'ts-jest': MY_VERSION } as Record<string, string>,
 )
 }
 
@@ -438,10 +438,10 @@ export class ConfigSet {
 compiler: this.tsJest.compiler,
 compilerOptions: this.typescript.options,
 isolatedModules: this.tsJest.isolatedModules,
-ignoreDiagnostics: this.tsJest.diagnostics.ignoreCodes,
+diagnostics: this.tsJest.diagnostics,
 }),
 )
-const res = join(this.jest.cacheDirectory, `ts-jest-${cacheSuffix}`)
+const res = join(this.jest.cacheDirectory, 'ts-jest', cacheSuffix.substr(0, 2), cacheSuffix.substr(2))
 logger.debug({ cacheDirectory: res }, `will use file caching`)
 return res
 }
@@ -489,6 +489,11 @@ export class ConfigSet {
 return !!process.env.TS_JEST_DOCTOR
 }
 
+@Memoize()
+get tsJestDigest(): string {
+return MY_DIGEST
+}
+
 /**
 * @internal
 */
@@ -505,11 +510,12 @@ export class ConfigSet {
 
 return new JsonableValue({
 versions: this.versions,
+digest: this.tsJestDigest,
 transformers: this.astTransformers.map(t => `${t.name}@${t.version}`),
 jest,
 tsJest: this.tsJest,
 babel: this.babel,
-tsconfig: this.tsconfig,
+tsconfig: this.typescript.options,
 })
 }
 

@@ -1,3 +1,6 @@
+import { readFileSync } from 'fs'
+import { resolve } from 'path'
+
 import { createJestPreset } from './config/create-jest-preset'
 import { pathsToModuleNameMapper } from './config/paths-to-module-name-mapper'
 import { TsJestTransformer } from './ts-jest-transformer'
@@ -6,6 +9,7 @@ import { VersionCheckers } from './util/version-checkers'
 
 // tslint:disable-next-line:no-var-requires
 export const version: string = require('../package.json').version
+export const digest: string = readFileSync(resolve(__dirname, '..', '.ts-jest-digest'), 'utf8')
 
 let transformer!: TsJestTransformer
 function defaultTransformer(): TsJestTransformer {