Add TypeScript support (#8)

* add typescript configuration

* remove package-lock.json

(cherry picked from commit 7137175)

jest.config.js

@@ -0,0 +1,14 @@
+module.exports = {
+  moduleDirectories: ['node_modules', 'src'],
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx' ],
+  preset: 'react-native',
+  setupFilesAfterEnv: ['./tests/setup.js'],
+  testPathIgnorePatterns: ['/node_modules/'],
+  transform: {
+    '^.+\\.tsx?$': 'ts-jest',
+  },
+  transformIgnorePatterns: [
+    'node_modules/(?!(jest-)?react-native|react-navigation)',
+  ],
+  coveragePathIgnorePatterns: ['/node_modules/'],
+};

package.json

@@ -3,14 +3,17 @@
   "version": "4.8.2",
   "devDependencies": {
     "@babel/core": "^7.5.0",
+    "@babel/preset-flow": "^7.9.0",
     "@babel/runtime": "^7.5.1",
     "@react-native-community/eslint-config": "^0.0.5",
+    "@types/jest": "^25.1.4",
+    "@types/react": "^16.9.31",
+    "@types/react-native": "^0.62.1",
+    "@types/react-test-renderer": "^16.9.2",
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.26.0",
-    "babel-cli": "^6.26.0",
     "babel-eslint": "^10.0.2",
     "babel-jest": "^24.8.0",
-    "babel-preset-flow": "^6.23.0",
     "eslint": "^6.0.1",
     "eslint-config-prettier": "^6.0.0",
     "eslint-plugin-babel": "^5.3.0",
@@ -51,6 +54,7 @@
     ]
   },
   "dependencies": {
+    "@babel/cli": "^7.8.4",
     "@babel/preset-env": "7.5.0",
     "@react-native-community/async-storage": "1.7.1",
     "@react-native-community/blur": "3.3.1",
@@ -127,7 +131,7 @@
     "readable-stream": "3.4.0",
     "secure-random": "1.1.2",
     "stream-browserify": "2.0.2",
-    "uglify-es": "^3.3.9",
+    "typescript": "^3.8.3",
     "url": "0.11.0",
     "util": "0.12.1",
     "wif": "2.0.6"

tsconfig.json

@@ -0,0 +1,24 @@
+{
+  "compilerOptions": {
+    "target": "esnext",
+    "module": "esnext",
+    "jsx": "react-native",
+    "noEmit": true,
+    "allowJs": true,
+    "strict": true,
+    "suppressImplicitAnyIndexErrors": true,
+    "moduleResolution": "node",
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+    "isolatedModules": true,
+    "lib": ["esnext"],
+    "resolveJsonModule": true,
+    "noImplicitAny": true,
+    "strictNullChecks": true,
+  },
+  "exclude": [
+    "node_modules",
+    "babel.config.js",
+    "jest.config.js"
+  ]
+}