feat: jest plugin

close #49

Author: urish

packages/typewiz-jest/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "typewiz-jest",
+  "version": "0.1.0",
+  "main": "dist/index.js",
+  "typings": "dist/index.d.ts",
+  "repository": "https://github.com/urish/typewiz",
+  "author": "Uri Shaked <[email protected]>",
+  "license": "MIT",
+  "scripts": {
+    "build": "rimraf dist && tsc",
+    "prepublish": "npm run build"
+  },
+  "files": ["dist"],
+  "engines": {
+    "node": ">= 6.4.0"
+  },
+  "dependencies": {
+    "ts-jest": "^22.4.2",
+    "typewiz": "^0.7.0"
+  },
+  "devDependencies": {
+    "@types/babel-core": "^6.25.3",
+    "rimraf": "^2.6.2"
+  }
+}

packages/typewiz-jest/src/index.ts

@@ -0,0 +1,21 @@
+import { getCacheKey, process as originalProcess } from 'ts-jest';
+import { JestConfig, Path, TransformOptions } from 'ts-jest/dist/jest-types';
+import { instrument } from 'typewiz';
+
+function process(
+    src: string,
+    filePath: Path,
+    jestConfig: JestConfig,
+    transformOptions: TransformOptions = { instrument: false },
+) {
+    src =
+        `require('typewiz').register();` +
+        instrument(src, filePath, {
+            instrumentCallExpressions: true,
+            instrumentImplicitThis: true,
+            tsConfig: 'tsconfig.json', // TODO read it from jest config?
+        });
+    return originalProcess(src, filePath, jestConfig, transformOptions);
+}
+
+export { getCacheKey, process };

packages/typewiz-jest/tsconfig.json

@@ -0,0 +1,21 @@
+{
+    "compilerOptions": {
+        "target": "es6",
+        "module": "commonjs",
+        "moduleResolution": "node",
+        "strictNullChecks": true,
+        "removeComments": false,
+        "sourceMap": true,
+        "declaration": true,
+        "newLine": "LF",
+        "noEmitOnError": true,
+        "noUnusedLocals": true,
+        "noImplicitThis": true,
+        "noImplicitAny": true,
+        "noFallthroughCasesInSwitch": true,
+        "rootDir": "src",
+        "outDir": "dist",
+        "lib": ["es5", "es2015.core", "es2015.promise", "es2015.collection", "es2015.iterable"]
+    },
+    "include": ["src/**/*.ts"]
+}