Change the package entry point to preprocessor.js itself

This way, the `"ts-jest"` package name can be used as Jest transform, instead of specifying the path to preprocessor.js.
The latter did not work when the ts-jest package had been hoisted to a parent folder (for example by lerna).

Fixes kulshekhar#361

AUTHORS

@@ -30,6 +30,7 @@ Justin Bay <jwbay@users.noreply.github.com>
 Kulshekhar Kabra <kulshekhar@users.noreply.github.com>
 Kyle Roach <kroach.work@gmail.com>
 Marshall Bowers <elliott.codes@gmail.com>
+Martijn The <post@martijnthe.nl>
 Matheus Gambati <matheusgambati@gmail.com>
 Maxim Samoilov <samoilowmaxim@gmail.com>
 Mohammad Rajabifard <mo.rajbi@gmail.com>

README.md

@@ -58,7 +58,7 @@ Modify your project's `package.json` so that the `jest` section looks something
 {
   "jest": {
     "transform": {
-      "^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
+      "^.+\\.tsx?$": "ts-jest"
     },
     "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
     "moduleFileExtensions": [
@@ -226,7 +226,7 @@ In `package.json`, inside `jest` section, the `transform` should be like this:
 ```json
 "transform": {
   "^.+\\.jsx?$": "<rootDir>/node_modules/babel-jest",
-  "^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
+  "^.+\\.tsx?$": "ts-jest"
 }
 ```
 
@@ -237,7 +237,7 @@ Fully completed jest section should look like this:
     "preset": "react-native",
     "transform": {
       "^.+\\.jsx?$": "<rootDir>/node_modules/babel-jest",
-      "^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
+      "^.+\\.tsx?$": "ts-jest"
     },
     "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
     "moduleFileExtensions": [
@@ -269,7 +269,7 @@ You'll also need to extend your `transform` regex with `html` extension:
 {
   "jest": {
     "transform": {
-      "^.+\\.(tsx?|html)$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
+      "^.+\\.(tsx?|html)$": "ts-jest"
     }
   }
 }

package.json

@@ -1,8 +1,8 @@
 {
   "name": "ts-jest",
-  "version": "21.1.4",
-  "main": "index.js",
-  "types": "./dist/index.d.ts",
+  "version": "21.2.0",
+  "main": "preprocessor.js",
+  "types": "./dist/preprocessor.d.ts",
   "description": "A preprocessor with sourcemap support to help use Typescript with Jest",
   "scripts": {
     "build": "tsc -p .",
@@ -46,7 +46,7 @@
   "homepage": "/~https://github.com/kulshekhar/ts-jest#readme",
   "jest": {
     "transform": {
-      "^.+\\.tsx?$": "<rootDir>/dist/preprocessor.js"
+      "^.+\\.tsx?$": "./dist/preprocessor.js"
     },
     "testRegex": "tests/__tests__/.*\\.spec\\.ts$",
     "coverageReporters": [

src/index.ts → src/install.ts

@@ -1,7 +1,6 @@
 import * as sourceMapSupport from 'source-map-support';
 import { defaultRetrieveFileHandler } from './default-retrieve-file-handler';
 
-export { transpileIfTypescript } from './transpile-if-ts';
 export function install() {
   const options: sourceMapSupport.Options = {};
 

src/preprocessor.ts

@@ -6,6 +6,8 @@ import { JestConfig, Path, TransformOptions } from './jest-types';
 import { getPostProcessHook } from './postprocess';
 import { getTSConfig, getTSJestConfig } from './utils';
 
+export { install } from './install';
+
 export function process(
   src: string,
   path: Path,
@@ -51,7 +53,10 @@ export function process(
       const outputFilePath = nodepath.join(
         config.cacheDirectory,
         '/ts-jest/',
-        crypto.createHash('md5').update(path).digest('hex'),
+        crypto
+          .createHash('md5')
+          .update(path)
+          .digest('hex'),
       );
 
       fs.outputFileSync(outputFilePath, outputText);

tests/__tests__/transpile-if-ts.spec.ts

@@ -1,4 +1,4 @@
-import { transpileIfTypescript } from '../../src';
+import { transpileIfTypescript } from '../../src/transpile-if-ts';
 
 describe('transpileIfTypescript', () => {
   it('should ignore anything non-TS', () => {

tests/jestconfig-test/jest.json

@@ -1,7 +1,7 @@
 {
   "rootDir": "./",
   "transform": {
-    "^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
+    "^.+\\.tsx?$": "ts-jest"
   },
   "mapCoverage": true,
   "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",