refactor(config): compute cache key without reading package.json

src/config/__snapshots__/config-set.spec.ts.snap

@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`cacheKey should be a string 1`] = `"{\\"digest\\":\\"a0d51ca854194df8191d0e65c0ca4730f510f332\\",\\"jest\\":{\\"__backported\\":true,\\"globals\\":{}},\\"projectDepVersions\\":{\\"dev\\":\\"1.2.5\\",\\"opt\\":\\"1.2.3\\",\\"peer\\":\\"1.2.4\\",\\"std\\":\\"1.2.6\\"},\\"transformers\\":[\\"hoisting-jest-mock@1\\"],\\"tsJest\\":{\\"compiler\\":\\"typescript\\",\\"diagnostics\\":{\\"ignoreCodes\\":[6059,18002,18003],\\"pretty\\":true,\\"throws\\":true},\\"isolatedModules\\":false,\\"packageJson\\":{\\"kind\\":\\"file\\"},\\"transformers\\":{},\\"tsConfig\\":{\\"kind\\":\\"file\\",\\"value\\":\\"\\"}},\\"tsconfig\\":{\\"options\\":{\\"configFilePath\\":\\"\\",\\"declaration\\":false,\\"inlineSourceMap\\":false,\\"inlineSources\\":true,\\"module\\":1,\\"noEmit\\":false,\\"removeComments\\":false,\\"sourceMap\\":true,\\"target\\":1,\\"types\\":[]},\\"raw\\":{\\"compileOnSave\\":false,\\"compilerOptions\\":{\\"composite\\":true,\\"declaration\\":true,\\"types\\":[]},\\"exclude\\":[\\"foo/**/*\\"],\\"include\\":[\\"bar/**/*\\"]}}}"`;
+exports[`cacheKey should be a string 1`] = `"{\\"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,\\"packageJson\\":{\\"kind\\":\\"file\\"},\\"transformers\\":{},\\"tsConfig\\":{\\"kind\\":\\"file\\",\\"value\\":\\"\\"}},\\"tsconfig\\":{\\"options\\":{\\"configFilePath\\":\\"\\",\\"declaration\\":false,\\"inlineSourceMap\\":false,\\"inlineSources\\":true,\\"module\\":1,\\"noEmit\\":false,\\"removeComments\\":false,\\"sourceMap\\":true,\\"target\\":1,\\"types\\":[]},\\"raw\\":{\\"compileOnSave\\":false,\\"compilerOptions\\":{\\"composite\\":true,\\"declaration\\":true,\\"types\\":[]},\\"exclude\\":[\\"foo/**/*\\"],\\"include\\":[\\"bar/**/*\\"]}}}"`;
 
 exports[`isTestFile should return a boolean value whether the file matches test pattern 1`] = `true`;
 
@@ -20,9 +20,6 @@ Object {
     "globals": Object {},
     "name": undefined,
   },
-  "projectDepVersions": Object {
-    "some-module": "1.2.3",
-  },
   "transformers": Array [
     "hoisting-jest-mock@1",
   ],

src/config/config-set.spec.ts

@@ -16,7 +16,7 @@ import { mocked } from '../util'
 import { IGNORE_DIAGNOSTIC_CODES, MATCH_NOTHING, TS_JEST_OUT_DIR } from './config-set'
 // eslint-disable-next-line no-duplicate-imports
 import type { ConfigSet } from './config-set'
-import { Deprecations, Errors, interpolate } from '../util/messages'
+import { Deprecations } from '../util/messages'
 
 jest.mock('../util/backports')
 jest.mock('../index')
@@ -809,13 +809,7 @@ describe('tsCacheDir', () => {
   const cacheDir = join(process.cwd(), cacheName)
   const partialTsJestCacheDir = join(cacheDir, 'ts-jest')
 
-  it.each([
-    undefined,
-    Object.create(null),
-    { 'ts-jest': { packageJson: undefined } },
-    { 'ts-jest': { packageJson: { name: 'foo' } } },
-    { 'ts-jest': { packageJson: 'src/__mocks__/package-foo.json' } },
-  ])(
+  it.each([undefined, Object.create(null)])(
     'should return value from which is the combination of ts jest config and jest config when running test with cache',
     (data) => {
       expect(
@@ -832,73 +826,6 @@ describe('tsCacheDir', () => {
     },
   )
 
-  it('should throw error when running test with cache and cannot resolve package.json path', () => {
-    const packageJsonPath = 'src/__mocks__/not-exist.json'
-
-    expect(
-      () =>
-        createConfigSet({
-          jestConfig: {
-            cache: true,
-            cacheDirectory: cacheDir,
-            globals: {
-              'ts-jest': { packageJson: packageJsonPath },
-            },
-          },
-          resolve: null,
-        }).tsCacheDir,
-    ).toThrowError(
-      new Error(
-        interpolate(Errors.FileNotFound, {
-          inputPath: 'src/__mocks__/not-exist.json',
-          resolvedPath: join(process.cwd(), packageJsonPath),
-        }),
-      ),
-    )
-  })
-
-  it(
-    'should return value and show warning when running test with cache and package.json path is' +
-      ' resolved but the path does not exist',
-    () => {
-      const packageJsonPath = 'src/__mocks__/not-exist.json'
-      const logger = testing.createLoggerMock()
-
-      expect(
-        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-        createConfigSet({
-          jestConfig: {
-            cache: true,
-            cacheDirectory: cacheDir,
-            globals: {
-              'ts-jest': { packageJson: packageJsonPath },
-            },
-          },
-          logger,
-        }).tsCacheDir!.indexOf(partialTsJestCacheDir),
-      ).toEqual(0)
-      expect(logger.target.lines[2]).toMatchInlineSnapshot(`
-        "[level:40] Unable to find the root of the project where ts-jest has been installed.
-        "
-      `)
-
-      logger.target.clear()
-    },
-  )
-
-  it('should return value from root packageJson when running test with cache and real path rootDir is the same as tsJest root', () => {
-    expect(
-      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-      createConfigSet({
-        jestConfig: {
-          cache: true,
-          cacheDirectory: cacheDir,
-        },
-        resolve: null,
-      }).tsCacheDir!.indexOf(partialTsJestCacheDir),
-    ).toEqual(0)
-  })
-
   it('should return undefined when running test without cache', () => {
     expect(createConfigSet({ resolve: null }).tsCacheDir).toBeUndefined()
   })

src/config/config-set.ts

@@ -10,7 +10,7 @@
  */
 import type { Config } from '@jest/types'
 import { LogContexts, Logger } from 'bs-logger'
-import { existsSync, readFileSync, realpathSync } from 'fs'
+import { existsSync, readFileSync } from 'fs'
 import { globsToMatcher } from 'jest-util'
 import json5 = require('json5')
 import { dirname, extname, isAbsolute, join, normalize, resolve } from 'path'
@@ -128,66 +128,6 @@ const toDiagnosticCodeList = (items: any, into: number[] = []): number[] => {
 }
 
 export class ConfigSet {
-  /**
-   * @internal
-   */
-  @Memoize()
-  private get projectPackageJson(): Record<string, any> {
-    const {
-      tsJest: { packageJson },
-    } = this
-    if (packageJson) {
-      if (packageJson.kind === 'inline') {
-        return packageJson.value
-      } else if (packageJson.kind === 'file' && packageJson.value) {
-        const path = this.resolvePath(packageJson.value)
-        if (existsSync(path)) {
-          return require(path)
-        }
-
-        this.logger.warn(Errors.UnableToFindProjectRoot)
-
-        return {}
-      }
-    }
-    const tsJestRoot = resolve(__dirname, '..', '..')
-    let pkgPath = resolve(tsJestRoot, '..', '..', 'package.json')
-    if (existsSync(pkgPath)) {
-      return require(pkgPath)
-    }
-    if (realpathSync(this.rootDir) === realpathSync(tsJestRoot)) {
-      pkgPath = resolve(tsJestRoot, 'package.json')
-      if (existsSync(pkgPath)) {
-        return require(pkgPath)
-      }
-    }
-
-    this.logger.warn(Errors.UnableToFindProjectRoot)
-
-    return {}
-  }
-
-  /**
-   * @internal
-   */
-  @Memoize()
-  private get projectDependencies(): Record<string, string> {
-    const { projectPackageJson: pkg } = this
-    const names = Object.keys({
-      ...pkg.optionalDependencies,
-      ...pkg.peerDependencies,
-      ...pkg.devDependencies,
-      ...pkg.dependencies,
-    })
-
-    return names.reduce((map, name) => {
-      const version = getPackageVersion(name)
-      if (version) map[name] = version
-
-      return map
-    }, {} as Record<string, string>)
-  }
-
   /**
    * @internal
    */
@@ -681,7 +621,6 @@ export class ConfigSet {
       stringify({
         version: this.compilerModule.version,
         digest: this.tsJestDigest,
-        dependencies: this.projectDependencies,
         compiler: this.tsJest.compiler,
         compilerOptions: this.parsedTsConfig.options,
         isolatedModules: this.tsJest.isolatedModules,
@@ -770,7 +709,6 @@ export class ConfigSet {
 
     return new JsonableValue({
       versions: this.versions,
-      projectDepVersions: this.projectDependencies,
       digest: this.tsJestDigest,
       transformers: Object.values(this.astTransformers)
         .reduce((acc, val) => acc.concat(val), [])