Add config for babel-jest

.babelrc

@@ -1,4 +0,0 @@
-{
-  "presets": ["@babel/env"],
-	"plugins": ["@babel/plugin-proposal-async-generator-functions", "@babel/plugin-transform-runtime"]
-}

babel-jest.config.json

@@ -0,0 +1,7 @@
+{
+	"presets": ["@babel/env"],
+	"plugins": [
+		"@babel/plugin-proposal-async-generator-functions",
+		"@babel/plugin-transform-runtime"
+  ]
+}

jest.config.js

@@ -1,4 +1,7 @@
 export default {
-	testMatch: ['**/?(*.)(test).js'],
+	testMatch: ["**/?(*.)(test).js"],
 	testEnvironment: "jsdom",
+	transform: {
+		"\\.js$": ["babel-jest", { configFile: "./babel-jest.config.json" }]
+	},
 };

package.json

@@ -27,7 +27,7 @@
     "@babel/core": "^7.17.8",
     "@babel/plugin-proposal-async-generator-functions": "^7.16.8",
     "@babel/plugin-transform-runtime": "^7.17.0",
-    "@babel/preset-env": "^7.16.11",
+    "@babel/preset-env": "^7.18.2",
     "@rollup/plugin-commonjs": "^21.0.3",
     "@rollup/plugin-json": "^4.1.0",
     "@rollup/plugin-node-resolve": "^13.1.3",

specs/jest.config.js

@@ -3,5 +3,8 @@ export default {
 	globalSetup: "./jest_helpers/setup.js",
 	globalTeardown: "./jest_helpers/teardown.js",
 	testEnvironment: "./jest_helpers/puppeteer_environment.js",
-	setupFilesAfterEnv: ["./jest_helpers/setup_tests.js"]
+	setupFilesAfterEnv: ["./jest_helpers/setup_tests.js"],
+	transform: {
+		"\\.js$": ["babel-jest", { configFile: "./babel-jest.config.json" }]
+	},
 };