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touch tsconfig.json
expo start
press yes to install types needed
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npm install --save-dev typescript @types/node @types/react @types/react-dom @types/jest
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yarn add --dev typescript @types/jest @types/react @types/react-native @types/react-test-renderer
# or for npm
npm install --save-dev typescript @types/jest @types/react @types/react-native @types/react-test-renderer
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yarn add -D typescript @types/jest @types/react @types/react-native @types/react-test-renderer
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module.exports = {
preset: 'react-native',
moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node']
};
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module.exports = { preset: 'react-native', moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node']};
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{
"compilerOptions": {
"allowJs": true,
"allowSyntheticDefaultImports": true,
"esModuleInterop": true,
"isolatedModules": true,
"jsx": "react",
"lib": ["es6"],
"moduleResolution": "node",
"noEmit": true,
"strict": true,
"target": "esnext"
},
"exclude": [
"node_modules",
"babel.config.js",
"metro.config.js",
"jest.config.js"
]
}