fix: source maps

.travis.yml

@@ -14,4 +14,5 @@ node_js:
   - "6"
 
 script:
+  - npm run clean -- --when-ci-commit-message
   - npm run test -- --coverage

appveyor.yml

@@ -1,7 +1,7 @@
 # http://www.appveyor.com/docs/appveyor-yml
 init:
-- ps: IF ($env:APPVEYOR_REPO_COMMIT_MESSAGE -Match "\[clear ci-cache\]" ) {$env:APPVEYOR_CACHE_SKIP_RESTORE = "true"}
-- ps: IF ($env:APPVEYOR_REPO_COMMIT_MESSAGE_EXTENDED -Match "\[clear ci-cache\]") {$env:APPVEYOR_CACHE_SKIP_RESTORE = "true"}
+- ps: IF ($env:APPVEYOR_REPO_COMMIT_MESSAGE -Match "\[clean ci-cache\]" ) {$env:APPVEYOR_CACHE_SKIP_RESTORE = "true"}
+- ps: IF ($env:APPVEYOR_REPO_COMMIT_MESSAGE_EXTENDED -Match "\[clean ci-cache\]") {$env:APPVEYOR_CACHE_SKIP_RESTORE = "true"}
 
 # Test against these versions of Node.js.
 environment:
@@ -20,6 +20,7 @@ install:
   - set TS_JEST_E2E_WORKDIR=%APPDATA%\ts-jest-e2e
   - npm version
   - npm ci || npm install
+  - npm run clean -- --when-ci-commit-message
 
 cache:
   - '%APPDATA%\npm-cache -> package.json'

e2e/__helpers__/source-maps.ts

@@ -0,0 +1 @@
+../../src/__helpers__/source-maps.ts

e2e/__helpers__/test-case.ts

@@ -3,6 +3,8 @@ import { sync as spawnSync } from 'cross-spawn'
 import { join, relative, sep } from 'path'
 import * as Paths from '../../scripts/paths'
 import * as fs from 'fs-extra'
+import { RawSourceMap } from 'source-map'
+import { relativiseSourceRoot, extractSourceMaps } from './source-maps'
 
 const TEMPLATE_EXCLUDED_ITEMS = ['node_modules', 'package-lock.json']
 
@@ -79,7 +81,7 @@ class TestCaseRunDescriptor {
     if (logUnlessStatus != null && logUnlessStatus !== result.status) {
       console.log(
         `Output of test run in "${this.name}" using template "${
-          this.templateName
+        this.templateName
         }" (exit code: ${result.status}):\n\n`,
         result.output.trim(),
       )
@@ -147,8 +149,9 @@ export interface TestRunResult {
 }
 interface TestFileIoData {
   in: [string, jest.Path, jest.ProjectConfig, jest.TransformOptions?]
-  // out: string | jest.TransformedSource;
   out: string
+  outNormalized: string
+  outSourceMaps: RawSourceMap
 }
 
 // tslint:disable-next-line:interface-over-type-literal
@@ -292,12 +295,20 @@ export function run(name: string, options: RunTestOptions = {}): TestRunResult {
   }
   if (writeIo) {
     Object.defineProperty(res, 'ioDataFor', {
-      value: (relPath: string) => require(`${ioDir}/${relPath}.json`),
+      value: (relPath: string) => wrapIoData(require(`${ioDir}/${relPath}.json`), dir),
     })
   }
   return res as any
 }
 
+function wrapIoData(ioData: TestFileIoData, rootDir: string): TestFileIoData {
+  const res: TestFileIoData = { ...ioData }
+  return Object.defineProperties(res, {
+    outNormalized: { get: () => relativiseSourceRoot(rootDir, ioData.out, '<cwd>/') },
+    outSourceMaps: { get: () => extractSourceMaps(ioData.out) },
+  })
+}
+
 // from https://stackoverflow.com/questions/25245716/remove-all-ansi-colors-styles-from-strings
 function stripAnsiColors(stringToStrip: string): string {
   return stringToStrip.replace(

e2e/__tests__/__snapshots__/source-map.test.ts.snap

@@ -11,7 +11,7 @@ function throwError() {
     throw new Error('WITHIN SOURCE');
 }
 exports.throwError = throwError;
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,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"
+//# sourceMappingURL=data:application/json;charset=utf-8;base64,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"
 `;
 
 exports[`using template "default" should report correct line numbers 1`] = `
@@ -79,7 +79,7 @@ function throwError() {
     throw new Error('WITHIN SOURCE');
 }
 exports.throwError = throwError;
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,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"
+//# sourceMappingURL=data:application/json;charset=utf-8;base64,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"
 `;
 
 exports[`using template "with-babel-6" should report correct line numbers 1`] = `
@@ -153,7 +153,7 @@ function throwError() {
 }
 
 exports.throwError = throwError;
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,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"
+//# sourceMappingURL=data:application/json;charset=utf-8;base64,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"
 `;
 
 exports[`using template "with-babel-7" should report correct line numbers 1`] = `
@@ -220,7 +220,7 @@ function throwError() {
     throw new Error('WITHIN SOURCE');
 }
 exports.throwError = throwError;
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,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"
+//# sourceMappingURL=data:application/json;charset=utf-8;base64,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"
 `;
 
 exports[`using template "with-jest-22" should report correct line numbers 1`] = `

e2e/__tests__/source-map.test.ts

@@ -16,7 +16,7 @@ testCase.runWithTemplates(allPackageSets, 1, (runTest, { templateName }) => {
     // when there are some issues with debugging, it's usually becasue source mpas are not inlined
     // and the debugger cannot find the line where to go
     it(`should have the source mpas comment`, () => {
-      expect(result.ioDataFor('main.ts').out).toMatchSnapshot()
+      expect(result.ioDataFor('main.ts').outNormalized).toMatchSnapshot()
     })
   })
 })

package.json

@@ -75,6 +75,7 @@
     "prettier-tslint": "^0.4.0",
     "reflect-metadata": "^0.1.12",
     "semver": "^5.5.1",
+    "source-map": "^0.7.3",
     "tslint": "^5.11.0",
     "typescript": "^3.0.1"
   },

scripts/clean.js

@@ -1,14 +1,26 @@
 #!/usr/bin/env node
 
-const { removeSync } = require('fs-extra');
-const Paths = require('./paths');
-const { join } = require('path');
+const { removeSync } = require('fs-extra')
+const Paths = require('./paths')
+const { join } = require('path')
 
-removeSync(Paths.distDir);
-removeSync(join(Paths.testsRootDir, '*', 'coverage'));
-removeSync(join(Paths.testsRootDir, '*', 'debug.txt'));
-removeSync(join(Paths.testsRootDir, '*', 'node_modules'));
-removeSync(join(Paths.e2eSourceDir, '*', 'node_modules'));
-removeSync(join(Paths.e2eTemplatesDir, '*', 'node_modules'));
-removeSync(Paths.e2eWorkDir);
-removeSync(Paths.e2eWotkDirLink);
+if (process.argv.indexOf('--when-ci-commit-message') !== -1) {
+  let msg =
+    process.env.TRAVIS_COMMIT_MESSAGE ||
+    process.env.APPVEYOR_REPO_COMMIT_MESSAGE
+  if (!msg)
+    throw new Error(`Unable to guess the commit message from CI env variables`)
+  if (process.env.APPVEYOR_REPO_COMMIT_MESSAGE_EXTENDED) {
+    msg = `${msg}\n${process.env.APPVEYOR_REPO_COMMIT_MESSAGE_EXTENDED}`
+  }
+  if (!/\[ci npm-clean\]/.test(msg)) return
+}
+
+removeSync(Paths.distDir)
+removeSync(join(Paths.testsRootDir, '*', 'coverage'))
+removeSync(join(Paths.testsRootDir, '*', 'debug.txt'))
+removeSync(join(Paths.testsRootDir, '*', 'node_modules'))
+removeSync(join(Paths.e2eSourceDir, '*', 'node_modules'))
+removeSync(join(Paths.e2eTemplatesDir, '*', 'node_modules'))
+removeSync(Paths.e2eWorkDir)
+removeSync(Paths.e2eWotkDirLink)

src/__helpers__/path.ts

@@ -0,0 +1,7 @@
+import { resolve, relative } from 'path'
+
+export const ROOT = resolve(__dirname, '..', '..')
+
+export function relativeToRoot(path: string) {
+  return relative(ROOT, path)
+}

src/__helpers__/source-maps.ts

@@ -0,0 +1,49 @@
+// WARNING: this file is shared between e2e and unit tests
+import { RawSourceMap } from 'source-map'
+import bufferFrom from 'buffer-from'
+import { relative, isAbsolute, resolve } from 'path'
+import stableStringify = require('fast-json-stable-stringify')
+import { realpathSync } from 'fs'
+
+// source-map module doesn't provide a sync method to extract the source-maps
+export function extractSourceMaps(source: string): RawSourceMap | undefined {
+  const [, comment]: [any, string | undefined] =
+    (source.match(
+      /[\n^]\/\/#\s*sourceMappingURL=data:application\/json;(?:charset=utf-8;)?base64,(\S+)\s*$/,
+    ) as any) || []
+  if (!comment) return
+
+  return base64ToSourceMaps(comment)
+}
+
+export function base64ToSourceMaps(base64: string): RawSourceMap {
+  return JSON.parse(bufferFrom(base64, 'base64').toString('utf8'))
+}
+
+export function sourceMapsToBase64(sourceMaps: RawSourceMap): string {
+  return bufferFrom(stableStringify(sourceMaps)).toString('base64')
+}
+
+export function relativiseSourceRoot(
+  fromPath: string,
+  source: string,
+  prefix: string = '',
+): string {
+  const from = realpathSync(fromPath)
+  const remap = (path: string): string =>
+    (isAbsolute(path)
+      ? `${prefix}${relative(from, realpathSync(path))}`
+      : path
+    ).replace(/\\/g, '/')
+
+  return source.replace(
+    /([\n^]\/\/#\s*sourceMappingURL=data:application\/json;(?:charset=utf-8;)?base64,)(\S+)(\s*)$/,
+    (_, before, base64, after) => {
+      const map = base64ToSourceMaps(base64)
+      if (map.sourceRoot) map.sourceRoot = remap(map.sourceRoot)
+      if (map.sources) map.sources = map.sources.map(remap)
+      if (map.file) map.file = remap(map.file)
+      return `${before}${sourceMapsToBase64(map)}${after}`
+    },
+  )
+}

src/lib/compiler.spec.ts

@@ -2,7 +2,8 @@ import { TsJestGlobalOptions } from './types'
 import { ConfigSet } from './config-set'
 import * as fakers from '../__helpers__/fakers'
 import { createCompiler } from './compiler'
-import outdent from 'outdent'
+import { extractSourceMaps } from '../__helpers__/source-maps'
+import { relativeToRoot } from '../__helpers__/path'
 
 // not really unit-testing here, but it's hard to mock all those values :-D
 
@@ -37,11 +38,22 @@ describe('typeCheck', () => {
       ),
     ).toThrowErrorMatchingInlineSnapshot(`
 "⨯ Unable to compile TypeScript:
-error TS5052: Option 'declarationDir' cannot be specified without specifying option 'declaration'.
-error TS5053: Option 'declarationDir' cannot be specified with option 'outFile'.
-error TS6082: Only 'amd' and 'system' modules are supported alongside --outFile.
 [eval].ts(2,7): error TS2322: Type 'number' is not assignable to type 'string'.
 "
 `)
   })
 })
+
+describe('source-maps', () => {
+  const compiler = makeCompiler()
+  it('should report diagnostics related to typings', () => {
+    const source = 'const f = (v: number) => v\nconst t: number = f(5)'
+    const compiled = compiler.compile(source, __filename)
+    const expectedFileName = relativeToRoot(__filename)
+    expect(extractSourceMaps(compiled)).toMatchObject({
+      file: expectedFileName,
+      sources: [expectedFileName],
+      sourcesContent: [source],
+    })
+  })
+})