Type annotations can only be used in TypeScript files.ts(8010) on React-Native CLI Startup · Issue #29123 · facebook/react-native · GitHub
GitHub - jstwister/vscode-flow-ide: Visual Studio Code extension for javascript Flowtype static type checker
Ability to disable TS8010: 'types' can only be used in a .ts file. · Issue #35470 · microsoft/TypeScript · GitHub
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