Merge pull request #307 from vuejs/remove-ts-dep

fix: do not require ts-jest and typescript

e2e/__projects__/babel-in-package/package.json

@@ -8,12 +8,12 @@
     "test": "jest --no-cache test.js"
   },
   "dependencies": {
-    "vue": "3.0.0-alpha.10"
-  },
-  "devDependencies": {
     "@babel/core": "^7.2.2",
     "@babel/preset-env": "^7.2.3",
-    "jest": "^24.0.0"
+    "jest": "^24.0.0",
+    "ts-jest": "^26.4.4",
+    "typescript": "^4.1.2",
+    "vue": "3.0.0-alpha.10"
   },
   "jest": {
     "moduleFileExtensions": [

e2e/__projects__/basic/__snapshots__/test.js.snap

@@ -33,6 +33,7 @@ var _default = {
 exports[\\"default\\"] = _default;
 \\"use strict\\";
 Object.defineProperty(exports, \\"__esModule\\", { value: true });
+exports.render = void 0;
 var vue_1 = require(\\"vue\\");
 var _hoisted_1 = { class: \\"hello\\" };
 function render(_ctx, _cache) {
@@ -77,6 +78,7 @@ var _default = {
 exports[\\"default\\"] = _default;
 \\"use strict\\";
 Object.defineProperty(exports, \\"__esModule\\", { value: true });
+exports.render = void 0;
 var vue_1 = require(\\"vue\\");
 var _hoisted_1 = { class: \\"hello\\" };
 function render(_ctx, _cache) {

e2e/__projects__/basic/package.json

@@ -18,6 +18,8 @@
     "babel-plugin-syntax-jsx": "^6.18.0",
     "babel-plugin-transform-vue-jsx": "^3.7.0",
     "jest": "^24.0.0",
+    "ts-jest": "^26.4.4",
+    "typescript": "^4.1.2",
     "vue-class-component": "^8.0.0-beta.4"
   },
   "jest": {

lib/utils.js

@@ -1,5 +1,6 @@
 const constants = require('./constants')
 const loadPartialConfig = require('@babel/core').loadPartialConfig
+const { resolveSync: resolveTsConfigSync } = require('tsconfig')
 const chalk = require('chalk')
 const path = require('path')
 const fs = require('fs')
@@ -64,6 +65,11 @@ const getBabelOptions = function loadBabelOptions(filename, options = {}) {
 }
 
 const getTsJestConfig = function getTsJestConfig(config) {
+  const isUsingTs = resolveTsConfigSync(process.cwd())
+  if (!isUsingTs) {
+    return null
+  }
+
   const createTransformer = require('ts-jest').createTransformer
   const tr = createTransformer()
   const configSet = tr.configsFor(config)

package.json

@@ -56,7 +56,8 @@
     "sass": "^1.23.7",
     "semantic-release": "^15.13.2",
     "stylus": "^0.54.5",
-    "typescript": "^3.2.2",
+    "ts-jest": "^26.4.4",
+    "typescript": "^4.1.2",
     "vue": "^3.0.3"
   },
   "peerDependencies": {
@@ -80,7 +81,7 @@
     "chalk": "^2.1.0",
     "convert-source-map": "^1.6.0",
     "extract-from-css": "^0.4.4",
-    "ts-jest": "^24.0.0"
+    "tsconfig": "^7.0.0"
   },
   "repository": {
     "type": "git",