Merge pull request #20 from anaswaratrajan/jest

Jest setup

enzyme.js

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+const Adapter = require('enzyme-adapter-react-16')
+require('enzyme').configure({ adapter: new Adapter() })

jest.config.js

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+module.exports = {
+    moduleFileExtensions: [
+        "ts",
+        "tsx",
+        "js"
+    ],
+    transform: {
+        "^.+\\.tsx?$": "ts-jest"
+    },
+    testMatch: [
+        "**/*.(test|spec).(ts|tsx)"
+    ],
+    globals: {
+        "ts-jest": {
+            babelConfig: true,
+            tsConfig: "jest.tsconfig.json",
+            diagnostics: false
+        }
+    },
+    coveragePathIgnorePatterns: [
+        "/node_modules/",
+        "enzyme.js"
+    ],
+    setupFilesAfterEnv: ["<rootDir>/enzyme.js"],
+    coverageReporters: [
+        "json",
+        "lcov",
+        "text",
+        "text-summary"
+    ],
+    moduleNameMapper: {
+        "\\.(css|less|sass|scss)$": "<rootDir>/__mocks__/styleMock.js",
+        "\\.(gif|ttf|eot|svg)$": "<rootDir>/__mocks__/fileMock.js"
+    }
+};

jest.tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "esnext",
+        "jsx": "react",
+        "sourceMap": false,
+        "experimentalDecorators": true,
+        "noImplicitUseStrict": true,
+        "removeComments": true,
+        "moduleResolution": "node",
+        "lib": [
+            "es2017",
+            "dom"
+        ],
+        "typeRoots": [
+            "node_modules/@types"
+        ]
+    },
+    "exclude": [
+        "node_modules",
+        "out",
+        ".next"
+    ]
+}