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Type annotations can only be used in TypeScript files.ts(8010) on React-Native CLI Startup · Issue #29123 · facebook/react-native · GitHub
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javascript - Error: 'types' can only be used in a .ts file - Visual Studio Code using @ts-check - Stack Overflow
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Type aliases can be used only in a .ts file' error popping up in Flow enabled files · Issue #15171 · microsoft/vscode · GitHub
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javascript - Error: 'types' can only be used in a .ts file - Visual Studio Code using @ts-check - Stack Overflow
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